CN203745849U - High-frequency electro-hydraulic servo oscillation system used in automobile testing industry - Google Patents
High-frequency electro-hydraulic servo oscillation system used in automobile testing industry Download PDFInfo
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- CN203745849U CN203745849U CN201320893133.7U CN201320893133U CN203745849U CN 203745849 U CN203745849 U CN 203745849U CN 201320893133 U CN201320893133 U CN 201320893133U CN 203745849 U CN203745849 U CN 203745849U
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- 238000012360 testing method Methods 0.000 title abstract description 7
- 230000010355 oscillation Effects 0.000 title abstract 5
- 238000006073 displacement reaction Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000005284 excitation Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
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Abstract
The utility model discloses a high-frequency electro-hydraulic servo oscillation system used in the automobile testing industry. The high-frequency electro-hydraulic servo oscillation system includes a high-frequency servo oil cylinder, a servo valve, a servo valve amplifier, a PLC and a displacement sensor; the PLC comprises a CPU as well as a first AI module and an AO module which have super-sampling functions, wherein the first AI module and the AO module are respectively connected with the CPU; the displacement sensor is connected with the first AI module and the high-frequency servo oil cylinder respectively; the servo valve amplifier is connected with the AO module and the servo valve respectively; and the servo valve is connected with the high-frequency servo oil cylinder. The high-frequency electro-hydraulic servo oscillation system of the utility model performs PID and linear fitting on set input sinusoidal signals and actual output displacement signals through the CPU and outputs amplitudes, phases and angles which are used for correcting the set input sinusoidal signals and controls the action of the valve core of the servo valve so as to make the actual output displacement signals and the set input sinusoidal signals of the high-frequency servo oil cylinder be in synchronization in a controlled manner. The high-frequency electro-hydraulic servo oscillation system used in the automobile testing industry has the advantages of simple structure, low cost, and good application prospect.
Description
Technical field
The utility model relates to a kind of Electro-hydraulic Servo Oscillate System, and especially a kind of high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry, belongs to automobile and detect and high-frequency electrohydraulic servocontrol art field.
Background technology
Electrohydraulic excitation system is to investigate the visual plant of Reliability of Auto Components and permanance, detects sector application extensive at automobile.Along with the pay attention to day by day of people to auto parts and components dynamic test, low-frequency electrohydraulic excitation system can not meet commercial production demand, need high-frequency hydraulic vibration gen to complete vibration test, meanwhile, high frequency sound electrohydraulic excitation system can also be expanded product specification to be checked and product performance scope.But, high-frequency electrohydraulic servo vibration exciting system more than domestic 100Hz is substantially from foreign procurement, Introduced From Abroad high frequency testing table is expensive, general enterprises is unable to be born, the control system stable performance that this patent is related, with high content of technology, reasonable price and meet the high-frequency electrohydraulic servo vibration exciting testing table of enterprise's production requirement.
High-frequency electrohydraulic servo vibration exciting system, it is the product that a kind of application is very wide, can produce this product, to make us greatly improve in high-end market competitiveness, the processing charges of high-frequency electrohydraulic servo vibration exciting system is more or less the same compared with common electrohydraulic servo system with Master Cost, but price can be several times even tens times of conventional system, and profit margin is large, and economic benefit is large.
2011, China's automobile production amount reaches 1,800 ten thousand, and meanwhile, automobile production enterprise is just being ascendant trend year by year to the demand of high frequency sound excitation system, therefore, there are the servo hydraulic system market outlook of high frequency characteristics, high precision and high control performance wide.From walking crosswise the angle of development, high-frequency excitation system can develop to high frequency large-tonnage; In the angle of longitudinal development, high-frequency excitation system can be applicable to other related industries, therefore, gives full play to the advantage of high-frequency electrohydraulic servo-drive system, and market outlook are wide.
Utility model content
The purpose of this utility model is signal generation waveform difference and the not high problem of signal trace precision can effectively solve in prior art Electro-hydraulic Servo Oscillate System high frequency time, provide a kind of simple in structure, cost of development is low is applied to automobile and detects the high-frequency electrohydraulic servo vibration exciting system of industry.
The purpose of this utility model can be by taking following technical scheme to reach:
Be applied to the high-frequency electrohydraulic servo vibration exciting system that automobile detects industry, it is characterized in that: described system comprises high frequency servo oil cylinder, servo-valve, servo-valve amplifier, PLC controller and for detection of the displacement transducer of high frequency servo oil cylinder displacement, described PLC controller comprises CPU, an AI module with over-extraction sample and the AO module with over-extraction sample, a described AI module is connected with CPU respectively with AO module, described displacement transducer is connected with high frequency servo oil cylinder with an AI module respectively, described servo-valve amplifier is connected with servo-valve with AO module respectively, described servo-valve is connected with high frequency servo oil cylinder.
As a kind of embodiment, described PLC controller also comprises the 2nd AI module, and described the 2nd AI module is connected with CPU.
As a kind of embodiment, described system also comprises the power sensor for detection of the suffered pressure of workpiece, and described power sensor is connected with the 2nd AI module.
As a kind of embodiment, described system also comprises that described pressure transducer is connected with the 2nd AI module for detection of the pressure transducer of importing and exporting oil circuit pressure.
As a kind of embodiment, step 2) described processing by an AI module be by an AI module, each scan period input signal to be divided into 100 parts to process.
As a kind of embodiment, step 4) described processing by A0 module be by AO module, each scan period output signal to be divided into 100 parts to process.
The utility model has following beneficial effect with respect to prior art:
1, high-frequency electrohydraulic servo vibration exciting system of the present utility model adopts PLC controller, it is to aim at the controller designing under industrial environment, have that reliability is high, antijamming capability is strong, programming easily and the feature such as debugging maintenance is convenient, thereby make that system is more reliable, safety and practicality, realize more convenient.
2, after high-frequency electrohydraulic servo vibration exciting system of the present utility model is surpassed the AI module of sampling functions and AO module signal is processed by band, can control the action of high frequency servo oil cylinder, the requirement of system to high responsiveness while meeting high frequency, simultaneously, servo-valve amplifier can amplify the power of AO module, meets the accuracy of requirement and the control of servo-valve relatively high power.
3, high-frequency electrohydraulic servo vibration exciting system architecture of the present utility model is simple, cost of development is low, have a good application prospect, the CPU of PLC controller by Ethernet interface also can and PC industrial computer between carry out communication, thereby realize data communication and share, on PC industrial computer, can carry out Real-Time Monitoring to data by interface, be convenient to user and operate.
Brief description of the drawings
Fig. 1 is the structural principle block diagram of the high-frequency electrohydraulic servo vibration exciting system of the utility model embodiment 1.
Fig. 2 is the control principle schematic diagram of the high-frequency electrohydraulic servo vibration exciting system of the utility model embodiment 1.
Fig. 3 is the structural principle block diagram of the high-frequency electrohydraulic servo vibration exciting system of the utility model embodiment 2.
Wherein, 1-high frequency servo oil cylinder, 2-servo-valve, 3-servo-valve amplifier, 4-PLC controller, 4-1-CPU, 4-2-the one AI module, 4-3-AO module, 4-4-DI module, 4-5-DO module, 4-6-Ethernet interface, 4-7-the 2nd AI module, 5-displacement transducer, 6-PC industrial computer, 7-power sensor, 8-pressure transducer.
Embodiment
Embodiment 1:
As shown in Figure 1, the high-frequency electrohydraulic servo vibration exciting system of the present embodiment, comprise high frequency servo oil cylinder 1, servo-valve 2, servo-valve amplifier 3, PLC controller (programmable logic controller (PLC)) 4, displacement transducer 5 and PC industrial computer 6, described PLC controller 4 comprises CPU4-1, an AI module (analog input module) 4-2, AO module (analog output module) 4-3, DI module (digital quantity input module) 4-4 and DO (digital output module) module 4-5, the model of described servo-valve 2 is MOOG761, described displacement transducer 5 adopts the displacement transducer of MTS RHM series, described CPU4-1 adopts cx series CPU (the present embodiment adopts cx1020), the model of a described AI module is EL3742, the model of described AO module is EL4712, the model of described DI module 4-4 is EL1008, the model of described DO module 4-5 is EL2008, described displacement transducer 5 is connected with an AI module 4-2 with high frequency servo oil cylinder 1 respectively, described servo-valve amplifier 3 is connected with servo-valve 2 with AO module 4-3 respectively, described servo-valve 2 is connected with high frequency servo oil cylinder 1, wherein:
Described displacement transducer 5, for detection of the displacement of high frequency servo oil cylinder 1, and will send an AI module to after displacement signal conversion;
A described AI module 4-2 and AO module 4-3 are all modules of the super sampling functions of band, after by an AI module 4-2 and AO module 4-3, signal being processed, control the action of high frequency servo oil cylinder 1, the requirement of system to high responsiveness while meeting high frequency;
Described servo-valve amplifier 3 can amplify the power of AO module 4-3, meets the accuracy of requirement and the control of servo-valve relatively high power;
Described CPU4-1 is connected with PC industrial computer 6 by Ethernet interface 4-6, and adopt between ICP/IP protocol and PC industrial computer and carry out communication, realize the data communication between CPU and operation interface and share, the displacement signal detecting as displacement transducer 5 sends an AI module 4-2 to and processes after signal conversion, be transferred to PC industrial computer 6 by CPU4-1 again, on PC industrial computer 6, the displacement data of high frequency servo oil cylinder carried out to Real-Time Monitoring.
As depicted in figs. 1 and 2, the control method of the high-frequency electrohydraulic servo vibration exciting system of the present embodiment, comprises the following steps:
1) according to the displacement demand of high frequency servo oil cylinder 1, input sinusoidal signal is set, be designated as Y
1;
2) after high frequency servo oil cylinder 1 starts, system detects the actual output displacement signal of high frequency servo oil cylinder 1 by displacement transducer 5, be designated as Y
2, after being converted to analog signals, actual output displacement signal sends an AI module 4-2 to, process by an AI module 4-2;
3) make to set input sinusoidal signal Y by CPU4-1
1amplitude A
1with deviation K
1respectively with actual output displacement signal Y
2amplitude A
2with deviation K
2carry out PID control, make to set input sinusoidal signal Y simultaneously
1phase angle theta
1with actual output displacement signal Y
2phase angle theta
2carry out linear fit, output is for calibration setup input sinusoidal signal Y
1amplitude A 0, phase angle theta
0with deviation K
0, the setting input sinusoidal signal after proofreading and correct is designated as to Y
0;
4) by the setting input sinusoidal signal Y after overcorrect
0send AO module 4-3 to and be converted to analog signals, process by AO module 4-3, send again servo-valve amplifier 3 to, servo-valve amplifier 3 sends servo-valve 2 to after the signal receiving is amplified, control the spool action of servo-valve 2, so the actual output displacement signal of controlling high frequency servo oil cylinder 1 with set the maintenance of input sinusoidal signal and synchronize.
Because an AI module 4-2 and AO module 4-3 are all with super sampling functions, compare common AI module and AO module, above-mentioned steps 2) described processing by an AI module 4-2 can be by an AI module 4-2, each scan period input signal to be divided into 100 parts to process; Step 4) described processing by AO module 4-3 can be by AO module 4-3, each scan period output signal to be divided into 100 parts to process.
Embodiment 2:
As shown in Figure 3, the principal feature of the present embodiment is: compare embodiment 1, described system also comprises power sensor 7 and pressure transducer 8, described PLC controller 4 also comprises the 2nd AI module 4-7 being connected with CPU4-1, the model of described the 2nd AI module 4-6 is EL3024, described power sensor 7 is connected with the 2nd AI module 4-7 respectively with pressure transducer 8, wherein:
Described power sensor 7 is for detection of the suffered pressure of workpiece, described pressure transducer 8 is for detection of importing and exporting oil circuit pressure, the pressure signal that the pressure signal that described power sensor 7 detects and pressure transducer 8 detect sends the 2nd AI module 4-7 to and processes after conversion, be transferred to PC industrial computer 6 by CPU4-1 again, on PC industrial computer 6, the suffered pressure pressure of workpiece and import and export oil circuit pressure data carried out to Real-Time Monitoring.
The control method of the present embodiment is with embodiment 1.
In above-described embodiment 1 and embodiment 2, described DI module 4-4 is for realizing the digital quantity input control of system, and described DO module 4-5 is for realizing the digital output control of system.
The above; it is only the utility model patent preferred embodiment; but the protection domain of the utility model patent is not limited to this; anyly be familiar with those skilled in the art in the disclosed scope of the utility model patent; be equal to replacement or changed according to the technical scheme of the utility model patent and utility model design thereof, all being belonged to the protection domain of the utility model patent.
Claims (6)
1. be applied to the high-frequency electrohydraulic servo vibration exciting system that automobile detects industry, it is characterized in that: described system comprises high frequency servo oil cylinder, servo-valve, servo-valve amplifier, PLC controller and for detection of the displacement transducer of high frequency servo oil cylinder displacement, described PLC controller comprises CPU, an AI module with over-extraction sample and the AO module with over-extraction sample, a described AI module is connected with CPU respectively with AO module, described displacement transducer is connected with high frequency servo oil cylinder with an AI module respectively, described servo-valve amplifier is connected with servo-valve with AO module respectively, described servo-valve is connected with high frequency servo oil cylinder.
2. the high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry according to claim 1, is characterized in that: described PLC controller also comprises the 2nd AI module, and described the 2nd AI module is connected with CPU.
3. the high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry according to claim 2, is characterized in that: described system also comprises the power sensor for detection of the suffered pressure of workpiece, and described power sensor is connected with the 2nd AI module.
4. the high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry according to claim 2, is characterized in that: described system also comprises that described pressure transducer is connected with the 2nd AI module for detection of the pressure transducer of importing and exporting oil circuit pressure.
5. the high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry according to claim 1, it is characterized in that: described PLC controller also comprises the DI module for realizing system digits amount input control and the DO module of controlling for realizing the output of system digits amount, and described DI module is connected with CPU respectively with DO module.
6. the high-frequency electrohydraulic servo vibration exciting system that is applied to automobile detection industry according to claim 1, it is characterized in that: described system also comprises PC industrial computer, described CPU is connected with PC industrial computer by Ethernet interface, and adopts between ICP/IP protocol and PC industrial computer and carry out communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893133.7U CN203745849U (en) | 2013-12-31 | 2013-12-31 | High-frequency electro-hydraulic servo oscillation system used in automobile testing industry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320893133.7U CN203745849U (en) | 2013-12-31 | 2013-12-31 | High-frequency electro-hydraulic servo oscillation system used in automobile testing industry |
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| CN203745849U true CN203745849U (en) | 2014-07-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760806A (en) * | 2013-12-31 | 2014-04-30 | 广州机械科学研究院有限公司 | High-frequency electro-hydraulic servo shock excitation system applied to vehicle inspection and test industry and control method |
| CN107176486A (en) * | 2017-06-21 | 2017-09-19 | 泉州市汉威机械制造有限公司 | A kind of material coil diameter detector |
| CN109115439A (en) * | 2018-08-15 | 2019-01-01 | 武汉智明力强光电系统有限公司 | A kind of high-frequency excitation device and control system |
-
2013
- 2013-12-31 CN CN201320893133.7U patent/CN203745849U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760806A (en) * | 2013-12-31 | 2014-04-30 | 广州机械科学研究院有限公司 | High-frequency electro-hydraulic servo shock excitation system applied to vehicle inspection and test industry and control method |
| CN107176486A (en) * | 2017-06-21 | 2017-09-19 | 泉州市汉威机械制造有限公司 | A kind of material coil diameter detector |
| CN109115439A (en) * | 2018-08-15 | 2019-01-01 | 武汉智明力强光电系统有限公司 | A kind of high-frequency excitation device and control system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |