CN105784320A - Liquid tank sloshing experiment integration device and using method thereof - Google Patents
Liquid tank sloshing experiment integration device and using method thereof Download PDFInfo
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- CN105784320A CN105784320A CN201610171485.XA CN201610171485A CN105784320A CN 105784320 A CN105784320 A CN 105784320A CN 201610171485 A CN201610171485 A CN 201610171485A CN 105784320 A CN105784320 A CN 105784320A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a liquid tank sloshing experiment integration device, which is characterized by comprising a control system, a liquid tank, a water inlet system, a water outlet system, and a data acquisition device, wherein the liquid tank is arranged above a motion platform; and the control system is respectively connected with the water inlet system, the water outlet system, the data acquisition device and the motion platform. According to the liquid tank sloshing experiment device with a compact structure, convenient assembly and disassembly, reliable connection, stable operation, strong practicability and realized integration, a motor system, the water inlet and outlet system, the data acquisition device and a high-speed camera are controlled through a single chip microcomputer, motion of three degrees of freedom of the liquid tank is controlled through the motor system, different carrier rates of the liquid tank are controlled through the water inlet and outlet system, pressure and wave heights at different positions are recorded through the data acquisition system, each process is coordinated for operation, the integrated experiment is realized, and as the water inlet and outlet system is connected with an underwater reservoir, circulating water use is realized, and the device is green.
Description
Technical field
The present invention relates to a kind of new fluid physics experimental provision and method, i.e. a kind of sloshing experiment integrated apparatus and method, concretely relate to integrated apparatus and its implementation of the experiment of a kind of lab simulation tanker sloshing.
Background technology
Along with the maximization gradually of LNG ship develops, closely-related liquid sloshing problem defeated with liquid shipping has attracted increasing concern.In recent years, the fluid cabin caused due to violent liquid sloshing destroys and boats and ships topple, and event is of common occurrence.Generally in the process of ship's navigation, under the effect of wave, tanker oceangoing ship can produce rolling, pitching, yawing, swaying, surging, hang down and swing the response of six-freedom degree, and the size of these responses directly affects course and the navigation safety of ship's navigation.What LNG ship carried is the natural gas of low temperature liquid, liquid tank inwall can be produced huge surge and rock moment under the effect of extreme wave by the LNG liquid in its cabin, very easily occurring liquid tank to destroy or boats and ships topple, causing liquid to leak once have an accident, consequence is extremely serious.Liquid sloshing is extremely complex fluid motion artifacts, shows very strong non-linear and randomness.Liquid sloshing generally can produce standing wave, carries out ripple, hydraulic jump, the broken fluid motion involving these several combinations corresponding.The cabin of different carrier fluid rates, under being subject to different dynamic excitations, it may occur that different sloshing phenomenon.
Have the impact of the factors such as the time variation of the non-linear of height and free surface due to liquid sloshing, theory analysis and numerical simulation to this problem all have certain limitation.Model test can effectively make up some defects of theory analysis and numerical simulation from physical angle.Currently mainly by the liquid sloshing test of different scale and shape liquid tank, study the liquid sloshing mechanism under multi-form excitation, rock shock loading time space distribution and the parameter impact on rocking the shock loading regularity of distribution such as outer sharp excitation amplitude, frequency, charging ratio.Carry out the device of laboratory simulation tanker sloshing experiment mainly by motion platform, liquid tank, pressure transducer, wave height recorder and corresponding data acquisition system etc. form, wherein motion platform is by platform courses software manipulation, various rule or irregular movement can be generated according to requirement of experiment, liquid tank is plexiglass box, different liquid tanks can simulate the tanker cabin of different structure form, liquid tank yardstick is taken advantage of corresponding scaling factor to determine by true cabin yardstick, pressure transducer and wave height recorder mensuration are rocked ripple surge and wave height to liquid tank diverse location and are changed, data collecting system is for the time history of display pressure and wave height in real time, obtain data for analyzing the response mechanism rocking ripple in liquid tank to different exiting forms.
In the patent about sloshing experiment announced now, the implementation of sloshing experiment has experimental procedure complexity mostly, experimental apparatus is various, take up room big, structure is compact not and the excessively deficiency such as labor intensive in experimentation, this experimental program solves problem above, it is proposed that the automation experiment device of a kind of sloshing experiment accurately simulated in indoor under pitching rolling heave three degree of freedom coupling and its implementation.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of sloshing experiment integrated apparatus, can accurately simulate the sloshing experiment under pitching rolling heave three degree of freedom coupling in indoor.
The technical problem to be solved is to provide compact conformation, easy accessibility, connect reliable, operate steadily, the practical sloshing experimental provision realizing integration, not only by Single-chip Controlling electric system, water inlet outlet system, data collecting system and high-speed camera, and the motion of liquid tank three degree of freedom is controlled by electric system, by intaking, outlet system controls liquid tank difference carrier fluid rate, pressure and the wave height of multiple position is recorded by data collecting system, each process coordinating works, realize integration experiment, and outlet system of intaking connects groundwater reservoir, realize cycling use of water, environmental protection.
In order to solve above-mentioned technical problem, the present invention is achieved through the following technical solutions: a kind of sloshing experiment integrated apparatus, it is characterized in that, including control system, liquid tank, water inlet system, outlet system, data acquisition unit, described liquid tank is arranged at above motion platform, and described control system connects water inlet system, outlet system, data acquisition unit and motion platform respectively.
Further, described motion platform is formed by supporting platform, active rotation axle, passive rotating shaft, base and electric system, described electric system is fixed on base, described passive rotating shaft is connected with the engagement of active rotation axle by screw thread, passive rotating shaft and active rotation axle are four groups, described liquid tank is together with supporting platform and being fixed with bolts, and described passive rotating shaft connects with supporting table-hinges, and described electric system is fixed on base；Described passive rotating shaft is connected with the engagement of active rotation axle by screw thread；Described electric system running drive active rotation axle rotates, and passive rotating shaft rotates simultaneously, and the different number of turns of four groups of passive rotating shaft rotations realize supporting platform rise and fall and angle of inclination, drives liquid tank motion simultaneously.
Described electric system, by controlling system control, inputs frequency and the amplitude of three degree of freedom, just can automatically calculate the anglec of rotation and the speed of four groups of passive rotating shafts at input；Described electric system controls the rotating cycle of four groups of passive rotating shafts, by calculating the coupling realizing liquid tank pitching, rolling and heave three degree of freedom.
The friction speed of described electric system motion and displacement realize the movement combination of a range of different frequency of liquid tank and amplitude.
Further, described passive rotating shaft is provided with displacement transducer and velocity sensor, institute's displacement sensors and velocity sensor for detecting displacement and the speed of passive rotating shaft.
Further, described data acquisition unit includes pressure transducer, wave height recorder, high-speed camera and multichannel data acquisition system, described multichannel data acquisition system is Bonding pressure sensor respectively, wave height recorder and high-speed camera, described pressure transducer and wave height recorder are fixed on inside liquid tank, described pressure transducer is embedded in liquid tank sidewall and end face, described wave height recorder is fixed on inside liquid tank, and ensure liquid tank inner wall smooth and airtight, described pressure transducer and wave height recorder are arranged in each point being likely to need to measure previously according to requirement of experiment, all connect data collecting system, the data acquisition channel needing to open can be selected as requested during experiment, gather pressure and wave height.
Described high-speed camera is arranged at liquid tank exterior lateral sides, described high-speed camera camera lens is just to liquid tank, for the motor process of fluid in real time record liquid tank, later stage combining image analytical technology, the evolutionary process of liquid tank flow field may finally be parsed, described high-speed camera camera lens is just contour with free surface in liquid tank to the central point of liquid tank and camera lens place plane, and camera lens place plane is parallel to liquid tank sidewall.
Further, described control system includes single-chip microcomputer, intelligence open and close system and isochronous controller, described intelligence open and close system connects water inlet system, outlet system, all pressure transducers and wave height recorder, the interface of multichannel data acquisition system and high-speed camera switch, described intelligence open and close system is for controlling water inlet system water inlet and the opening and closing of outlet system outlet, the opening and closing of the opening and closing of high-speed camera and pressure transducer and wave height recorder data acquisition channel, described isochronous controller is used for ensureing that liquid tank moves, multichannel data acquisition system and high-speed camera process start simultaneously at.
Described Single Chip Microcomputer (SCM) system controls water inlet system, outlet system, electric system, multichannel data acquisition system and high-speed camera；Described single-chip microcomputer can pass through to control the flow of water inlet system and outlet system, it is achieved liquid tank difference carrier fluid rate；Described single-chip microcomputer can control the anglec of rotation and the speed of four groups of passive rotating shafts by controlling electric system, it is achieved the coupled motions of liquid tank three degree of freedom different frequency and amplitude；Described single-chip microcomputer can pass through to control the opening and closing of different data acquisition passage, it is achieved measures the data that specific operation needs to measure；Described single-chip microcomputer can pass through to control the switch of high-speed camera and realize the motor process of fluid in record liquid tank.
Further, described water inlet system and outlet system are provided with flow control sensor, described flow control sensor is for detecting the flow by water inlet system and outlet system, described outlet system connects groundwater reservoir by pipeline, realize cycling use of water, described water inlet system and outlet system are opened and closed by Single-chip Controlling, it is ensured that liquid tank inner wall smooth during experiment, and carrier fluid rate is controlled.
Further, described liquid tank is provided with top cover, and described top cover and liquid tank are bolted, for covering the wave being likely to touch top in experiment after airtight, it is ensured that carrier fluid rate is controlled.
Further, described base is uncovered cuboid, passive rotating shaft length is close with pedestal edge wall height, described support platform length is more than base length, while experiment terminates to close electric system, passive rotating shaft recovers isometric, supports platform simultaneously and recovers neutral position, and platform offer is stable to be supported in order to support to fall rear base limit wall.
The using method of a kind of sloshing experiment integrated apparatus, is characterized in that, comprise the following steps:
All pressure transducers installed and wave height recorder, according to requirement of experiment, are accessed data handling system by step 1: assemble with fixing, and label in order, liquid tank top cover water inlet connects water inlet system, and liquid tank sidewall outlet connects outlet system, and liquid tank inner wall smooth is with airtight；
Step 2: Preparatory work of experiment stage, carrier fluid rate is inputted according to requirement of experiment, open water inlet system, control flow and reach corresponding carrier fluid rate, close water inlet system, close water inlet, according to requirement of experiment input stimulus form, including frequency and the amplitude of pitching, rolling and heave three degree of freedom, open corresponding data acquisition channel according to requirement of experiment；
Step 3: experimental stage, opens isochronous controller, simultaneously turn-on data acquisition system, opens electric system and high-speed camera mode of operation, and given mode motion pressed by platform, meanwhile records the motor process of fluid in desired data and liquid tank；
Step 4: experiment stops, and stops isochronous controller as required in good time, meanwhile stops high-speed camera mode of operation, data collecting system and electric system, data Auto-Memory, and motion automatic buffer recovers neutral position and falls；
Step 5: amendment experiment condition, after battery of tests completes, according to requirement of experiment, arranges carrier fluid rate, opens, open corresponding data acquisition channel, repeats step 3～step 5 and is fully completed to experiment；
Step 6: experiment terminates, opens outlet system, closes closed system after water is got rid of.
The beneficial effect that the present invention reaches:
1, compact conformation, easy accessibility, connection is reliable, operate steadily, the practical sloshing experimental provision realizing integration, can disposable control electric system, water inlet system, outlet system and data collecting system and high-speed camera, it is to avoid the tedious steps of experiment；
2, electric system can realize the coupling of liquid tank pitching, rolling and heave three degree of freedom, the motion of existing sports platform single-degree-of-freedom of having upgraded；
3, water inlet system and outlet system are set simultaneously, it is to avoid the work of the dismounting liquid tank carried out when changing operating condition of test in order to change carrier fluid rate；
4, water inlet system and outlet system arrange traffic monitoring, change liquid tank carrier fluid rate by controlling flow, accurately and reliably, it is to avoid manually measure the error caused；
5, water inlet system and outlet system connect groundwater reservoir, it is achieved cycling use of water, environmental protection；
6, all pressure transducers and wave height recorder are installed in advance, laboratory is only needed to select the data acquisition channel opened as required, avoid the trouble of hand picking data in existing experiment, simultaneously without repeatedly installing sensor according to operating condition of test, it is to avoid unnecessary damage；
7, laboratory automation degree is high, and closely, experimentation manpower consumption is few in experiment link linking.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the liquid tank top view of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the operation workflow figure that the present invention controls system；
Fig. 5 is the top view of motion of the present invention；
Fig. 6 is that the passive rotating shaft of the present invention connects fixing schematic diagram with supporting table-hinges.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
nullAs shown in Figures 1 to 6，A kind of sloshing experiment integrated apparatus，It is characterized in that，Including control system、Liquid tank 2、Water inlet system、Outlet system、Data acquisition unit，Described liquid tank is arranged at above motion platform，Described control system connects water inlet system 5 respectively、Outlet system 6、Data acquisition unit and motion platform，Described control system includes single-chip microcomputer 1、Intelligence open and close system 20 and isochronous controller 23，Described motion platform is by supporting platform 8、Active rotation axle 9、Passive rotating shaft 10、Base 11 and electric system 12 form，Described electric system 12 is fixed on base 11，Described passive rotating shaft 10 is connected with active rotation axle 9 engagement by screw thread，Passive rotating shaft 10 and active rotation axle 9 are four groups，Described liquid tank 2 adopts bolt 21 to be connected and fixed with supporting platform 8，Described passive rotating shaft connects with supporting table-hinges，Described passive rotating shaft is provided with displacement transducer 17 and velocity sensor 18，Described data acquisition unit includes pressure transducer 3、Wave height recorder 4、High-speed camera 22 and multichannel data acquisition system 7，Described high-speed camera is arranged at liquid tank exterior lateral sides，Described water inlet system and outlet system are provided with flow control sensor 19，Described liquid tank is provided with top cover 14，Described top cover and liquid tank are bolted.
Described liquid flow sensor 19 is positioned at water inlet system 5 and outlet system 6 pipeline；Institute's displacement sensors 17 and velocity sensor 18 are positioned at passive rotating shaft 10；Described intelligence open and close system 20 connects water inlet 15, outlet 16, the interface of multichannel data acquisition system 7 and high-speed camera 22 and switchs；Described liquid flow sensor 19 is for detecting the flow by water inlet system 5 and outlet system 6；Institute's displacement sensors 17 and velocity sensor 18 are for detecting displacement and the speed of passive rotating shaft 10；Described intelligence open and close system 20 is used for controlling water inlet 15 and the opening and closing of outlet 16, high-speed camera 22 and pressure transducer 3 and the opening and closing of wave height recorder 4 data acquisition channel；Described isochronous controller 23 is used for ensureing that liquid tank 2 moves, and data acquisition and high-speed camera process start simultaneously at.
Described high-speed camera 22 camera lens, just to liquid tank 2, for the motor process of fluid in real time record liquid tank, later stage combining image analytical technology, may finally parse the evolutionary process of liquid tank flow field.
Described single-chip microcomputer 1 controls water inlet system 5, outlet system 6, electric system 12, multichannel data acquisition system 7 and high-speed camera 22；Described single-chip microcomputer can pass through to control the flow of water inlet system 5 and outlet system 6, it is achieved the different carrier fluid rate of liquid tank 2；Described single-chip microcomputer can control the anglec of rotation and the speed of four groups of passive rotating shafts 10 by controlling electric system 12, it is achieved the coupled motions of liquid tank 2 three degree of freedom different frequency and amplitude；Described single-chip microcomputer can pass through to control the opening and closing of different data acquisition passage, it is achieved measures the data that specific operation needs to measure；Described single-chip microcomputer can pass through to control the switch of high-speed camera 22 and realize the motor process of fluid in record liquid tank 2.
Described pressure transducer 3 and wave height recorder 4 are arranged in each point being likely to need to measure, whole connecting multi-channel data collecting systems 7 previously according to requirement of experiment, can select the data acquisition channel needing to open as requested, gather pressure and wave height during experiment.
Described liquid tank 2 adopts bolt 21 to be connected and fixed with supporting platform 8；Described liquid tank 2 center overlaps in the projection of horizontal plane with supporting platform 8 center；Described passive rotating shaft 10 is hinged by pin 13 with support platform 8.
Described electric system 12 is fixed on base 11；Described passive rotating shaft 10 is connected with active rotation axle 9 engagement by screw thread；The running of described electric system 12 drives active rotation axle 9 to rotate, and passive rotating shaft 10 rotates simultaneously, and the different number of turns of four groups of passive rotating shaft 10 rotations realize supporting platform 8 rise and fall and angle of inclination, drives liquid tank 2 to move simultaneously.
Described electric system 12 is controlled by single-chip microcomputer 1, inputs frequency and the amplitude of three degree of freedom at input, just can automatically calculate the anglec of rotation and the speed of four passive rotating shafts 10；Described electric system 12 controls the rotating cycle of four passive rotating shafts 10, by calculating the coupling realizing liquid tank 2 pitching, rolling and heave three degree of freedom.
The friction speed of described electric system 12 motion and displacement realize the movement combination of a range of different frequency of liquid tank 2 and amplitude.
Described outlet system 6 connects groundwater reservoir by pipeline, it is achieved cycling use of water；Described water inlet system 5 and outlet system 6 control to open and close by single-chip microcomputer 1, it is ensured that liquid tank 2 inner wall smooth during experiment, carrier fluid rate is controlled.
Described liquid tank 2 includes top cover 14；Described top cover 14 is connected by bolt 21 with liquid tank 2 main body, for covering the wave being likely to touch top in experiment after airtight, it is ensured that carrier fluid rate is controlled.
Described base 11 is uncovered rectangular box body；Described passive rotating shaft 10 length is highly consistent with limit wall；Described support platform 8 yardstick is slightly larger than base 11 yardstick, and while experiment terminates closedown electric system 12, passive rotating shaft 10 recovers isometric, supports platform 8 simultaneously and recovers neutral position, falls rear base 11 limit wall for supporting platform 8 and provides stable support.
A kind of method realizing sloshing experiment integration, comprises the following steps:
Step 1: assemble with fixing
Described flow control sensor is positioned at water inlet system and outlet system pipeline；Institute's displacement sensors and velocity sensor are positioned at passive rotating shaft；Described flow control sensor is for detecting the flow by water inlet system and outlet system；Institute's displacement sensors and velocity sensor are for detecting displacement and the speed of passive rotating shaft；Described intelligence open and close system is for controlling the opening and closing of water inlet and outlet, the opening and closing of the opening and closing of high-speed camera and pressure transducer and wave height recorder data acquisition channel；Described isochronous controller is used for ensureing that liquid tank motion, data acquisition and high-speed camera mode of operation start simultaneously at.
According to requirement of experiment, at liquid tank sidewall and top cover relevant position embedment pressure sensor, at the fixing wave height recorder in the internal relevant position of liquid tank, it is ensured that liquid tank inner wall smooth is with airtight, all pressure transducers installed and wave height recorder are accessed data handling system, and label in order.
Liquid tank top cover water inlet connects water inlet system, and liquid tank sidewall outlet connects outlet system, it is ensured that liquid tank inner wall smooth is with airtight, and outlet system connects groundwater reservoir.
Liquid tank top cover and liquid tank main body are bolted, and are bolted with supporting platform by liquid tank after liquid tank is fixing, and liquid tank center overlaps in the projection of horizontal plane with supporting platform center.
High-speed camera camera lens is just to liquid tank, for the motor process of fluid in real time record liquid tank.
So far, whole device installs.
Step 2: Preparatory work of experiment stage
Open Single Chip Microcomputer (SCM) system, close electric system, close data collecting system, close outlet, close outlet system, input carrier fluid rate according to requirement of experiment, open water inlet, open water inlet system, control flow and reach corresponding carrier fluid rate, close water inlet system, close water inlet.
According to requirement of experiment input stimulus form, including frequency and the amplitude of pitching, rolling and heave three degree of freedom.
Corresponding data acquisition channel is opened according to requirement of experiment.
Open high-speed camera switch.
Step 3: experimental stage
Open isochronous controller, meanwhile turn-on data acquisition system, open electric system and high-speed camera mode of operation.Given mode motion pressed by platform, meanwhile records the motor process of fluid in desired data and liquid tank.
Step 4: experiment stops
Stopping isochronous controller as required in good time, meanwhile stop high-speed camera mode of operation, data collecting system and electric system, data Auto-Memory, motion automatic buffer recovers neutral position and falls.
Step 5: amendment experiment condition
After battery of tests completes, open outlet system, open outlet, after water drains, close outlet system, close outlet, according to requirement of experiment, carrier fluid rate is set, opens water inlet, open water inlet system, control flow and reach corresponding carrier fluid rate, close water inlet system, close water inlet.
According to requirement of experiment input stimulus form, including frequency and the amplitude of pitching, rolling and heave three degree of freedom.
Corresponding data acquisition channel is opened according to requirement of experiment.
Repeat step 3～5 to experiment to be fully completed.
Step 6: experiment terminates
Open outlet system, open outlet, after water is got rid of, close outlet system, close outlet, close electric system, closing high-speed video camera, close data collecting system, close Single Chip Microcomputer (SCM) system.
Described liquid flow sensor, for monitoring the flow by water inlet system and outlet system, when flow reaches the requirement of corresponding carrier fluid rate, is automatically switched off water inlet system or outlet system.
Institute's displacement sensors and velocity sensor are for monitoring displacement and the movement velocity of passive rotating shaft, when input stimulus form, single-chip microcomputer calculates the equation of motion of every passive rotating shaft automatically, the value of displacement transducer and velocity sensor feeds back to electric system, adjust the operating of electric system, be finally reached corresponding exiting form.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (9)
1. a sloshing experiment integrated apparatus, it is characterized in that, including control system, liquid tank, water inlet system, outlet system, data acquisition unit, described liquid tank is arranged at above motion platform, and described control system connects water inlet system, outlet system, data acquisition unit and motion platform respectively.
2. a kind of sloshing experiment integrated apparatus according to claim 1, it is characterized in that, described motion platform is formed by supporting platform, active rotation axle, passive rotating shaft, base and electric system, described electric system is fixed on base, and described passive rotating shaft is connected with the engagement of active rotation axle by screw thread.
3. a kind of sloshing experiment integrated apparatus according to claim 2, is characterized in that, described passive rotating shaft is provided with displacement transducer and velocity sensor.
4. a kind of sloshing experiment integrated apparatus according to claim 1, it is characterized in that, described data acquisition unit includes pressure transducer, wave height recorder, high-speed camera and multichannel data acquisition system, described multichannel data acquisition system is Bonding pressure sensor, wave height recorder and high-speed camera respectively, described pressure transducer and wave height recorder are fixed on inside liquid tank, and described high-speed camera is arranged at liquid tank exterior lateral sides.
5. a kind of sloshing experiment integrated apparatus according to claim 1, is characterized in that, described control system includes single-chip microcomputer, intelligence open and close system and isochronous controller.
6. a kind of sloshing experiment integrated apparatus according to claim 1, is characterized in that, described water inlet system and outlet system are provided with flow control sensor, and described outlet system connects groundwater reservoir by pipeline.
7. a kind of sloshing experiment integrated apparatus according to claim 1, is characterized in that, described liquid tank is provided with top cover, and described top cover and liquid tank are bolted.
8. a kind of sloshing experiment integrated apparatus according to claim 2, is characterized in that, described base is uncovered cuboid, and passive rotating shaft length is close with pedestal edge wall height, and described support platform length is more than base length.
9. the using method of a kind of sloshing experiment integrated apparatus according to claim 1～8 any claim, is characterized in that, comprise the following steps:
All pressure transducers installed and wave height recorder, according to requirement of experiment, are accessed data handling system by step 1: assemble with fixing, and label in order, liquid tank top cover water inlet connects water inlet system, and liquid tank sidewall outlet connects outlet system, and liquid tank inner wall smooth is with airtight；
Step 2: Preparatory work of experiment stage, carrier fluid rate is inputted according to requirement of experiment, open water inlet system, control flow and reach corresponding carrier fluid rate, close water inlet system, close water inlet, according to requirement of experiment input stimulus form, including frequency and the amplitude of pitching, rolling and heave three degree of freedom, open corresponding data acquisition channel according to requirement of experiment；
Step 3: experimental stage, opens isochronous controller, simultaneously turn-on data acquisition system, opens electric system and high-speed camera mode of operation, and given mode motion pressed by platform, meanwhile records the motor process of fluid in desired data and liquid tank；
Step 4: experiment stops, and stops isochronous controller as required in good time, meanwhile stops high-speed camera mode of operation, data collecting system and electric system, data Auto-Memory, and motion automatic buffer recovers neutral position and falls；
Step 5: amendment experiment condition, after battery of tests completes, according to requirement of experiment, arranges carrier fluid rate, opens, open corresponding data acquisition channel, repeats step 3～step 5 and is fully completed to experiment；
Step 6: experiment terminates, opens outlet system, closes closed system after water is got rid of.
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Application publication date: 20160720 |