CN102295215B - Oscillating characteristic-frequency extracting and inhibiting system for mine-hoist steel-wire rope - Google Patents
Oscillating characteristic-frequency extracting and inhibiting system for mine-hoist steel-wire rope Download PDFInfo
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- CN102295215B CN102295215B CN 201110237998 CN201110237998A CN102295215B CN 102295215 B CN102295215 B CN 102295215B CN 201110237998 CN201110237998 CN 201110237998 CN 201110237998 A CN201110237998 A CN 201110237998A CN 102295215 B CN102295215 B CN 102295215B
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Abstract
The invention relates to an oscillating characteristic-frequency extracting and inhibiting system for a mine-hoist steel-wire rope, which comprises a speed detector, an A/D (Analog/Digital) sampling circuit, a digital filter, a PLC (Programmable Logic Controller) and a phase inverter, wherein the speed detector is used for detecting the operating speed of a hoist motor; the A/D sampling circuit is used for sampling a detected speed value; the digital filter is used for digitally filtering a sampling value and sending the filtered speed value into the PLC; the PLC is used for analyzing the speed-changing function of a hoist and calculating the speed-changing quantity delta n of the hoist generated by the oscillation of the steel-wire rope by adopting a wavelet-analyzing method; and the phase inverter is used for inverting the speed-changing quantity delta n and superimposing an inverted value minus delta n as a speed-loop compensating setting into the speed setting of a speed loop for a hoist-control system. Through the oscillating characteristic-frequency extracting and inhibiting system for the mine-hoist steel-wire rope, the oscillating characteristic-frequency of the steel-wire rope can be accurately extracted, and the frequency is effectively inhibited.
Description
Technical field
The present invention relates to a kind of oscillation characteristics frequency and extract and the inhibition system, relate in particular to a kind of mine hoist steel rope oscillation characteristics frequency and extract and the inhibition system.
Background technology
Steel rope is widely used in the elevator system of mine hoist, in order to drive lifting container lifting in well, finishes transportation burden.In the operational process, if mechanical resonance takes place elevator system, will make steel rope and lifting container produce sharply vibration, destroy the stability of operation.And, also can make some parts of hoisting cable and gig the severe stress of normal circumstances occur substantially exceeding.In addition, the oscillation characteristics frequency that steel rope produces also can exert an influence to hoister control system, and each link in the system can be carried out integration, amplification to the vibration that steel rope produces, and system is had a negative impact.
At present, extracting method to steel rope oscillation characteristics frequency has a lot, what most of mine generally used is the Fourier analytic method, yet this method only is applicable to the vibration of steady gradual change, for the uncharacteristic harmonics that produces under the abnormal operating state, the Fourier analytic method can not be understood its local feature well.Therefore, employing Fourier analytic method can not extract the oscillation characteristics frequency of steel rope all sidedly, and inhibition is not obvious.
Summary of the invention
Based on the problems referred to above, the object of the present invention is to provide a kind of mine hoist steel rope oscillation characteristics frequency to extract and the inhibition system, extract not comprehensive and the unconspicuous technical matters of inhibition with the oscillation characteristics frequency that solves steel rope in the prior art.
For achieving the above object, the invention provides a kind of mine hoist steel rope oscillation characteristics frequency and extract and the inhibition system, comprising:
Speed detector is in order to detect the running velocity of gig motor;
The A/D sample circuit is connected with speed detector, in order to detected velocity amplitude is sampled;
Digital filter is connected with the A/D sample circuit, in order to sampled value is carried out digital filter, and filtered velocity amplitude is sent into the PLC controller;
The PLC controller is connected with digital filter, in order to analyze the velocity variations function of gig, adopts wavelet analysis method to calculate gig because of the proper velocity variable Δ n that produces of steel rope;
Phase inverter is connected with the PLC controller, in order to velocity variable Δ n negate, and during the value after the negate-Δ n is given as the speed of the given hoister control system speed ring that is added to of speed ring compensation.
A kind of mine hoist steel rope oscillation characteristics frequency is extracted and the inhibition system, it is characterized in that its PLC controller further comprises:
CPU in order to analyze the velocity variations function of gig, adopts wavelet analysis method to calculate gig because of the proper velocity variable Δ n that produces of steel rope;
Input interface module is connected with CPU, in order to receiving the velocity amplitude that digital filter sends, and the velocity amplitude that receives is sent to CPU;
Output interface module is connected with CPU, is sent to phase inverter in order to CPU is handled the velocity variable Δ n that obtains;
Power module is connected with CPU, input interface module and output interface module respectively, with thinking that the integrated circuit of those modules provides working power;
Programming device is connected with CPU, be used for programming, to system do that some are set, the working condition of monitoring PLC controller and the system that controls thereof;
Watch-dog is connected with CPU, is used for direct monitoring data or passes through the picture monitoring data;
Storage equipment is connected with CPU, is used for permanently storing customer data, and user program is not lost.
Extract and the inhibition system according to the described a kind of mine hoist steel rope oscillation characteristics frequency of preferred embodiment of the present invention, its speed detector is AVAGO photoelectric coding-HEDS-5500#A14.
Extract and the inhibition system according to the described a kind of mine hoist steel rope oscillation characteristics frequency of preferred embodiment of the present invention, it is characterized in that, it is single channel RF radio frequency deletion digital filter that digital filter flies.
Extract and the inhibition system according to the described a kind of mine hoist steel rope oscillation characteristics frequency of preferred embodiment of the present invention, it is characterized in that the PLC controller is the Q25PRH type PLC of Mitsubishi.
In the mine hoist system, ideally the resistance of air is that gig travels at the uniform speed uniformly.Due to the characteristic of steel rope, can the vibrate tension force increase that causes steel rope of steel rope causes the gig vibration in lifting process, makes the speed of gig that erratic variation take place.Therefore, the present invention is reflected in the oscillation frequency of steel rope on the velocity variations of gig, by extraction and analysis and suppress the Hoist Speed variable quantity and realize extraction and inhibition to steel rope oscillation characteristics frequency, this system carries out wavelet analysis by the PLC controller to filtered speed sampling value, calculate the velocity variable Δ n that gig produces because of the steel rope vibration, finish the extraction of steel rope oscillation characteristics frequency, and this velocity variable Δ n is applied on the reverser, to Δ n negate, during value after the negate-Δ n is given as the speed of the given speed ring that is added to of speed ring compensation, closed loop control by speed ring suppresses Δ n, thereby realizes suppressing the oscillation characteristics frequency of steel rope.Compared with prior art, the present invention can extract the oscillation characteristics frequency of steel rope exactly, and this frequency is effectively suppressed.
Description of drawings
Fig. 1 extracts and suppresses the structural principle scheme drawing of system for mine hoist steel rope oscillation characteristics frequency of the present invention;
Fig. 2 is the circuit structure diagram of a kind of A/D sample circuit of the embodiment of the invention;
Fig. 3 is the structure principle chart of a kind of PLC controller of the embodiment of the invention;
Fig. 4 is for using the software architecture diagram of hoister control system of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, specify the present invention.
Following examples are being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention are not limited to following embodiment.
See also Fig. 1 to Fig. 4, a kind of mine hoist steel rope oscillation characteristics frequency is extracted and the inhibition system, comprising: speed detector 101, A/D sample circuit 103, digital filter 105, PLC controller 107 and phase inverter 109.
Speed detector 101 detects the running velocity of gig motor 201, and it adopts AVAGO photoelectric coding-HEDS-5500#A14.A/D sample circuit 103 links to each other with speed detector 101, and detected velocity amplitude is sampled.Digital filter 105 is connected with A/D sample circuit 103, and the velocity amplitude after the sampling is carried out digital filter, and this digital filter 105 is specially single channel RF radio frequency deletion digital filter.Digital filter 105 is connected to the I/O interface of PLC controller 107, and filtered sampled value is sent into PLC controller 107, and the PLC controller carries out wavelet analysis to this sampled value, extracts steel rope oscillation characteristics frequency.The Q25PRH type PLC that this PLC controller 107 is Mitsubishi, it obtains the function that speed changes with the steel rope vibration according to software program, adopt wavelet analysis method to analyze the velocity variations function of gig, the velocity variable Δ n that the gig that calculates produces because of steel rope vibration, and then extract the oscillation characteristics frequency of steel rope.Phase inverter 109 is connected with PLC controller 107, PLC controller 107 is applied to the velocity variable Δ n that calculates on the reverser 109,109 couples of Δ n of phase inverter negate, and during the value after the negate-Δ n is given as the speed of the given hoister control system speed ring 203 that is added to of speed ring compensation.As shown in Figure 4, speed ring 203 carries out closed loop control by the speed of electric current loop 205 and 207 pairs of motors 201 of SCR circuit transfer function again, thereby suppresses the oscillation characteristics frequency of steel rope.
As shown in Figure 2, it is the circuit structure diagram of a kind of A/D sample circuit of the embodiment of the invention.A/D sample circuit 103 is made up of resistance R 1, R2, R3, R4, R5, R6, R7, R8, comparator Q1, Q2, Q3, Q4, Q5, Q6, Q7 and priority encoder.Eight resistance sizes equate that series connection constitutes resitstance voltage divider, produce the VREF (Voltage Reference) of different numerical value, form 1/8U
REF-7/8U
REFTotally 7 kinds of quantization levels; 7 quantization levels are added in the inverting input of 7 voltage comparators respectively, analog input voltage U
IBe added in the in-phase input end of comparator, work as U
IDuring more than or equal to quantization level, comparator is output as 1, otherwise is output as 0, and voltage comparator is used for finishing the quantification to sampled voltage; The output of comparator is delivered to priority encoder and is encoded, and obtains 3 binary code D
2D
1D
0, and then finish and must sample to detected velocity amplitude, and send sampled value to digital filter 105.
As shown in Figure 3, it is the structure principle chart of a kind of PLC controller of the embodiment of the invention.PLC controller 107 comprises: CPU111, input interface module 113, output interface module 115, power module 117, programming device 119, watch-dog 121 and storage equipment 123.
CPU111 adopts wavelet analysis method to calculate gig because of the proper velocity variable Δ n that produces of steel rope in order to analyze the velocity variations function of gig.
CPU111 is the core of PLC controller 107, its function of giving by the system program of PLC controller 107 receives and storage user program and data, mode with scanning is gathered state or the data of being sent here by on-the-spot input media, and deposit in the register of regulation, simultaneously, diagnosis power supply and the mode of operation of PLC internal circuit and the syntex error in the programming process etc.After entering operation, reading command one by one from the user program memory produces corresponding control signal by the task of instruction regulation after by analysis again, removes to command relevant control circuit.
Input interface module 113 is connected with CPU111, in order to receiving the velocity amplitude that digital filter sends, and the velocity amplitude that receives is sent to CPU111;
Output interface module 115 is connected with CPU111, is sent to phase inverter in order to CPU111 is handled the velocity variable Δ n that obtains;
PLC controller 107 contacts with the external world by input interface module 113 and output interface module 115, finishes external function.Count determination module specification and quantity by input interface module 113 and output interface module 115.Module the is integrated I/O circuit of PLC is wherein imported temporary storage reflected input signal state, output point reflection output latch state.
Power module 117 is connected with CPU111, input interface module 113 and output interface module 115 respectively, for the integrated circuit of PLC controller 107 each module provides working power.Simultaneously, power module 117 can provide the working power of 24V for input circuit.
Programming device 119 is connected with CPU111, and simple and easy Programmer and intelligent graphic Programmer are arranged, be used for programming, to system do that some are set, the working condition of monitoring PLC controller 107 and the system that controls thereof.Programmer is PLC Application and Development, monitoring operation, checks and safeguard indispensable device, but it does not participate in the field control operation directly.
Watch-dog 121 is connected with CPU111, and data monitor and graphic monitor are arranged, and is used for direct monitoring data or passes through the picture monitoring data.
Storage equipment 123 is connected with CPU111, and storage card, storage tape, flexible plastic disc or read-only memory (ROM) are arranged, and is used for permanently storing customer data, user program is not lost, as EPROM, EEPROM write device etc.
In the mine hoist system, ideally the resistance of air is that gig travels at the uniform speed uniformly.Due to the characteristic of steel rope, can the vibrate tension force increase that causes steel rope of steel rope causes the gig vibration in lifting process, makes the speed of gig that erratic variation take place.Therefore, the present invention is reflected in the oscillation frequency of steel rope on the velocity variations of gig, by extraction and analysis and suppress the Hoist Speed variable quantity and realize extraction and inhibition to steel rope oscillation characteristics frequency, this system carries out wavelet analysis by the PLC controller to filtered speed sampling value, calculate the velocity variable Δ n that gig produces because of the steel rope vibration, finish the extraction of steel rope oscillation characteristics frequency, and this velocity variable Δ n is applied on the reverser, to Δ n negate, during value after the negate-Δ n is given as the speed of the given speed ring that is added to of speed ring compensation, closed loop control by speed ring suppresses Δ n, thereby realizes suppressing the oscillation characteristics frequency of steel rope.Compared with prior art, the present invention can extract the oscillation characteristics frequency of steel rope exactly, and this frequency is effectively suppressed.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (5)
1. a mine hoist steel rope oscillation characteristics frequency is extracted and the inhibition system, it is characterized in that, comprising:
Speed detector is in order to detect the running velocity of gig motor;
The A/D sample circuit is connected with described speed detector, in order to detected velocity amplitude is sampled;
Digital filter is connected with described A/D sample circuit, in order to sampled value is carried out digital filter, and filtered velocity amplitude is sent into the PLC controller;
The PLC controller is connected with described digital filter, in order to analyze the velocity variations function of gig, adopts wavelet analysis method to calculate the velocity variable Δ n that gig produces because of the steel rope vibration;
Phase inverter is connected with described PLC controller, in order to described velocity variable Δ n negate, and during the value after the negate-Δ n is given as the speed of the given hoister control system speed ring that is added to of speed ring compensation.
2. a kind of mine hoist steel rope oscillation characteristics frequency as claimed in claim 1 is extracted and the inhibition system, it is characterized in that described PLC controller further comprises:
CPU in order to analyze the velocity variations function of gig, adopts wavelet analysis method to calculate the velocity variable Δ n that gig produces because of the steel rope vibration;
Input interface module is connected with described CPU, in order to receiving the velocity amplitude that digital filter sends, and the velocity amplitude that receives is sent to CPU;
Output interface module is connected with described CPU, is sent to phase inverter in order to CPU is handled the velocity variable Δ n that obtains;
Power module is connected with described CPU, input interface module and output interface module respectively, with thinking that the integrated circuit of described those modules provides working power;
Programming device is connected with described CPU, be used for programming, to system do that some are set, the working condition of monitoring PLC controller and the system that controls thereof;
Watch-dog is connected with described CPU, is used for direct monitoring data or passes through the picture monitoring data;
Storage equipment is connected with described CPU, is used for permanently storing customer data, and user program is not lost.
3. a kind of mine hoist steel rope oscillation characteristics frequency as claimed in claim 1 is extracted and the inhibition system, it is characterized in that described speed detector is AVAGO photoelectric coding-HEDS-5500#A14.
4. a kind of mine hoist steel rope oscillation characteristics frequency as claimed in claim 1 is extracted and the inhibition system, it is characterized in that, it is single channel RF radio frequency deletion digital filter that described digital filter flies.
5. a kind of mine hoist steel rope oscillation characteristics frequency as claimed in claim 1 is extracted and the inhibition system, it is characterized in that the PLC controller is the Q25PRH type PLC of Mitsubishi.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110237998 CN102295215B (en) | 2011-08-18 | 2011-08-18 | Oscillating characteristic-frequency extracting and inhibiting system for mine-hoist steel-wire rope |
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| CN 201110237998 CN102295215B (en) | 2011-08-18 | 2011-08-18 | Oscillating characteristic-frequency extracting and inhibiting system for mine-hoist steel-wire rope |
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| CN102295215B true CN102295215B (en) | 2013-08-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106865375A (en) * | 2017-02-23 | 2017-06-20 | 太原理工大学 | Hoisting container hanging steel rope on-line monitoring system and method |
| CN109019277B (en) * | 2018-08-22 | 2020-06-09 | 中国矿业大学 | Method and device for inhibiting longitudinal low-frequency oscillation of steel wire rope of deep well hoist |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182707A (en) * | 1996-06-03 | 1998-05-27 | 奥蒂斯电梯公司 | Elevator active drawing device |
| CN1259480A (en) * | 1998-12-24 | 2000-07-12 | 联合技术公司 | Semi-active type elevator driving device |
| CN202226522U (en) * | 2011-08-18 | 2012-05-23 | 上海交通大学 | Mine hoist steel wire rope oscillation characteristic frequency extraction and suppression system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7227330B2 (en) * | 2005-07-14 | 2007-06-05 | Yaskawa Electric America, Inc. | Overvoltage suppression technique for variable frequency drives operating reciprocating loads |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182707A (en) * | 1996-06-03 | 1998-05-27 | 奥蒂斯电梯公司 | Elevator active drawing device |
| CN1259480A (en) * | 1998-12-24 | 2000-07-12 | 联合技术公司 | Semi-active type elevator driving device |
| CN202226522U (en) * | 2011-08-18 | 2012-05-23 | 上海交通大学 | Mine hoist steel wire rope oscillation characteristic frequency extraction and suppression system |
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Effective date of registration: 20161230 Address after: 223001 science and Technology Industrial Park, Jiangsu, Huaian science and technology road, No. 18 Patentee after: North Jiangsu Institute of Shanghai Jiao Tong University Address before: 800 Dongchuan Road, Shanghai, No. 200240 Patentee before: Shanghai Jiaotong Univ. |