CN104533852A - Multichannel electro-hydraulic servo control system for automobile component fatigue test - Google Patents
Multichannel electro-hydraulic servo control system for automobile component fatigue test Download PDFInfo
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- CN104533852A CN104533852A CN201410763043.5A CN201410763043A CN104533852A CN 104533852 A CN104533852 A CN 104533852A CN 201410763043 A CN201410763043 A CN 201410763043A CN 104533852 A CN104533852 A CN 104533852A
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- displacement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a multichannel electro-hydraulic servo control system for an automobile component fatigue test. The multichannel electro-hydraulic servo control system for the automobile component fatigue test comprises an input circuit, a processor, a PID controller, a comparator, a power amplifying circuit, a servo valve, a hydraulic cylinder, a displacement sensor and a pressure sensor; the displacement sensor is used for detecting the hydraulic displacement of the hydraulic cylinder; the pressure sensor is used for detecting the pressure signal supported by the load; and the pressure sensor is used for transmitting the detected the pressure signal to the PID controller; the PID controller is used for obtaining a difference value by calculating the received pressure signal from the pressure sensor and the voltage signal output by the processor, transmitting the displacement signal detected by the displacement sensor to the comparator, and transmitting the difference value output by the PID controller and the displacement signal detected by the displacement sensor to the power amplifying circuit after passing through the comparator. The multichannel electro-hydraulic servo control system for the automobile component fatigue test is capable of achieving the goal of improving the disturbance rejection, the interconnectivity and the harmony of the system.
Description
Technical field
The present invention relates to a kind of fatigue of automobile parts test multi-channel servo control system.
Background technique
In contemporary society, automobile is as the topmost traffic tool, carries the important task of communications and transportation in life.It is as the most frequently used traffic tool of people, and higher to the requirement on yielding capacity, production in enormous quantities is the attribute of its indispensability, and simultaneously as one of higher living appliance of scientific and technological content, the application of new material and technology is also very common.Simultaneously in order to meet the utilization effectively and reasonably to new material and new technology, the production process of automobile has merged the top technique comprising multiple industries such as machinery, chemical industry, electronics, metallurgy, has embodied a concentrated reflection of the newest fruits of the mankind at technological innovation and material innovation area.
Automobile is made up of up to ten thousand component, each component, and such as suspension, back axle, subframe all need to carry out rational design and researchp, also will carry out test afterwards and could judge that whether qualified it is, and these tests comprise static load, dynamic load and fatigue test etc.In vehicle traveling process, wheel periodically rotates, and can cause periodic impact to the load part of vehicle in operation process, this periodic load is also cyclic loading.Auto parts and components can not keep stable working state for a long time under cyclic loading condition.This negative effect causes component, such as the working stress of suspension, back axle and subframe etc. is lower than the yield strength of finished parts material therefor, because the most active time of vehicle is longer, under the effect of cyclic stress, auto parts and components there will be failure phenomenon, the fatigue ruption namely usually said.There is period comparatively early in the fatigue ruption of most of mechanical parts.Have data to show, fatigue fracture is the main form that part is destroyed inefficacy.Especially in today that mechanized equipment keeps the large-scale development, the working environment of high-pressure heavy-load is tending towards general, and part can produce the situation of high temperature and corrosion in running up, and fatigue ruption is also just adjoint and give birth to.Existing testing machine is divided into static test-machine and dynamic testing machine, and static test-machine, after setting test index, can be tested voluntarily; Although dynamic testing machine can complete test equally, in test spontaneity, ability is more weak.But all there is immunity in static test-machine and dynamic testing machine, the problem of interconnectivity and inaccurate coordination.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of fatigue of automobile parts test multi-channel servo control system, to realize raising system immunity, the advantage of interconnectivity and harmony.
For achieving the above object, the technical solution used in the present invention is:
A kind of fatigue of automobile parts test multi-channel servo control system, comprise input circlult, processor, PID controller, comparator, power amplification circuit, servovalve, oil hydraulic cylinder, displacement transducer and pressure transducer, the output terminal of input circlult is connected with the input end of processor, the output terminal of described processor is connected with the input end of PID controller, the output terminal of PID controller is connected with the input end of comparator, the output terminal of comparator is connected with the input end of power amplification circuit, the output terminal of power amplification circuit is connected with the input end of servovalve, the action of servo valve control oil hydraulic cylinder, described Driven by Hydraulic Cylinder load deformation, the institute's hydraulic displacement of displacement sensors to oil hydraulic cylinder detects, described pressure transducer detects the pressure signal that load is born, the pressure signal of detection is transferred to PID controller by described pressure transducer, a difference is obtained after the voltage signal computing that the pressure signal from pressure transducer received and processor export by described PID controller, the displacement signal that institute's displacement sensors detects transfers to comparator, the difference that PID controller exports and the displacement signal that displacement transducer detects transfer to power amplification circuit after comparator.
Technological scheme of the present invention has following beneficial effect:
Technological scheme of the present invention, combines mechanical, electrical, liquid three kinds of technology, and adopts the new and high technology such as closed loop control, electromechanical integration, thus reach raising system immunity, the object of interconnectivity and harmony.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the fatigue of automobile parts test multi-channel servo control system described in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of fatigue of automobile parts test multi-channel servo control system, comprise input circlult, processor, PID controller, comparator, power amplification circuit, servovalve, oil hydraulic cylinder, displacement transducer and pressure transducer, the output terminal of input circlult is connected with the input end of processor, the output terminal of processor is connected with the input end of PID controller, the output terminal of PID controller is connected with the input end of comparator, the output terminal of comparator is connected with the input end of power amplification circuit, the output terminal of power amplification circuit is connected with the input end of servovalve, the action of servo valve control oil hydraulic cylinder, Driven by Hydraulic Cylinder load deformation, the hydraulic displacement of displacement transducer to oil hydraulic cylinder detects, pressure transducer detects the pressure signal that load is born, the pressure signal of detection is transferred to PID controller by pressure transducer, a difference is obtained after the voltage signal computing that the pressure signal from pressure transducer received and processor export by PID controller, the displacement signal that displacement transducer detects transfers to comparator, the difference that PID controller exports and the displacement signal that displacement transducer detects transfer to power amplification circuit after comparator.
Difference, after being input to bit comparator, can changing the flexible of oil hydraulic cylinder pole, namely change load deformation, thus change the force value loaded.
Load is the parts will testing fatigue test.By the repeatedly pressure testing of oil hydraulic cylinder to parts, and by gathering the data of load deformation, thus realize parts fatigue test.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a fatigue of automobile parts test multi-channel servo control system, it is characterized in that, comprise input circlult, processor, PID controller, comparator, power amplification circuit, servovalve, oil hydraulic cylinder, displacement transducer and pressure transducer, the output terminal of input circlult is connected with the input end of processor, the output terminal of described processor is connected with the input end of PID controller, the output terminal of PID controller is connected with the input end of comparator, the output terminal of comparator is connected with the input end of power amplification circuit, the output terminal of power amplification circuit is connected with the input end of servovalve, the action of servo valve control oil hydraulic cylinder, described Driven by Hydraulic Cylinder load deformation, the institute's hydraulic displacement of displacement sensors to oil hydraulic cylinder detects, described pressure transducer detects the pressure signal that load is born, the pressure signal of detection is transferred to PID controller by described pressure transducer, a difference is obtained after the voltage signal computing that the pressure signal from pressure transducer received and processor export by described PID controller, the displacement signal that institute's displacement sensors detects transfers to comparator, the difference that PID controller exports and the displacement signal that displacement transducer detects transfer to power amplification circuit after comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763043.5A CN104533852A (en) | 2014-12-12 | 2014-12-12 | Multichannel electro-hydraulic servo control system for automobile component fatigue test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763043.5A CN104533852A (en) | 2014-12-12 | 2014-12-12 | Multichannel electro-hydraulic servo control system for automobile component fatigue test |
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| Publication Number | Publication Date |
|---|---|
| CN104533852A true CN104533852A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410763043.5A Pending CN104533852A (en) | 2014-12-12 | 2014-12-12 | Multichannel electro-hydraulic servo control system for automobile component fatigue test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504015A (en) * | 2017-10-10 | 2017-12-22 | 宁波创力液压机械制造有限公司 | A kind of cable tension test device |
Citations (5)
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|---|---|---|---|---|
| CN2646748Y (en) * | 2003-08-08 | 2004-10-06 | 实用动力（上海）有限公司 | Multi-point force application electrohydraulic servo position control device |
| EP1479343A1 (en) * | 2003-05-19 | 2004-11-24 | GE Medical Systems Global Technology Company LLC | Method and apparatus for object collision detection utilizing a pid controller in a motorized, mobile C-arm |
| CN1865910A (en) * | 2006-06-02 | 2006-11-22 | 清华大学 | Vertical double-shaft four-cylinder electro-hydraulic servo testing machine |
| CN101858457A (en) * | 2010-03-26 | 2010-10-13 | 潘辉义 | Intelligent electropneumatic valve positioner and control system |
| CN102141494A (en) * | 2010-12-25 | 2011-08-03 | 长春机械科学研究院有限公司 | Testing machine for simulating fatigue life in full scale mode in marine environment of harbor pipeline |
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2014
- 2014-12-12 CN CN201410763043.5A patent/CN104533852A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1479343A1 (en) * | 2003-05-19 | 2004-11-24 | GE Medical Systems Global Technology Company LLC | Method and apparatus for object collision detection utilizing a pid controller in a motorized, mobile C-arm |
| CN2646748Y (en) * | 2003-08-08 | 2004-10-06 | 实用动力（上海）有限公司 | Multi-point force application electrohydraulic servo position control device |
| CN1865910A (en) * | 2006-06-02 | 2006-11-22 | 清华大学 | Vertical double-shaft four-cylinder electro-hydraulic servo testing machine |
| CN101858457A (en) * | 2010-03-26 | 2010-10-13 | 潘辉义 | Intelligent electropneumatic valve positioner and control system |
| CN102141494A (en) * | 2010-12-25 | 2011-08-03 | 长春机械科学研究院有限公司 | Testing machine for simulating fatigue life in full scale mode in marine environment of harbor pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504015A (en) * | 2017-10-10 | 2017-12-22 | 宁波创力液压机械制造有限公司 | A kind of cable tension test device |
| CN107504015B (en) * | 2017-10-10 | 2024-04-05 | 宁波创力液压机械制造有限公司 | Cable tension testing device |
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Application publication date: 20150422 |