CN201475068U - Device for researching synchronous driving performance - Google Patents
Device for researching synchronous driving performance Download PDFInfo
- Publication number
- CN201475068U CN201475068U CN2009201922966U CN200920192296U CN201475068U CN 201475068 U CN201475068 U CN 201475068U CN 2009201922966 U CN2009201922966 U CN 2009201922966U CN 200920192296 U CN200920192296 U CN 200920192296U CN 201475068 U CN201475068 U CN 201475068U
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- China
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- electro
- hydraulic cylinder
- oil
- proportional valve
- piston
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- Expired - Lifetime
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Abstract
The utility model relates to a device for researching synchronous driving performance. The existing device has low control precision and poor synchronization performance. The device comprises a stander, wherein earring couplers are arranged at the bottom of the stander and are connected with earrings, and each earring is fixedly arranged at one end of a piston rod; the other end of the piston rod is fixedly arranged on a piston, and a hydraulic cylinder displacement sensor penetrates through a hydraulic cylinder to be matched with the piston and the piston rod in a sliding way; the hydraulic cylinder is divided into a non-rod cavity and a rod cavity by the piston, and a pressure sensor and a flow sensor are arranged on a pipeline between the non-rod cavity and an electro-hydraulic proportional valve; the oil supply loop of the electro-hydraulic proportional valve is connected with an oil tank through an oil pump motor group and an oil liquid filter, and a valve spool displacement sensor is arranged on the electro-hydraulic proportional valve; and the output signals of a control unit and a disturbance signal loading device are synthesized by a signal synthesizer and are amplified by a signal amplifier and then are loaded to the electro-hydraulic proportional valve. The utility model improves the precision of synchronous driving, and can guide the application of a synchronous driving system in the engineering actual field well.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of device that is used for studying multi-hydraulic-cylinder synchronous driving system different driving mechanism and controlling method to the influence of synchronous drive precision.
Background technique
The multi-hydraulic-cylinder synchronized drive technology, adjust as the quick position of self-propelled gun, the press down system of high-accuracy numerical control machine tool supplying position control and milling train etc., core technology and key configuration in the great often dynamoelectric equipment, because of each passage in the synchronous driving process and each interchannel performance unusual fluctuation factor numerous and diverse, difficult quilt detects in real time and compensates, it is the difficult point during electromechanical control realizes always, how to explore synchronous drive mechanism, coherence between control strategy design and the synchronous drive precision, more effectively improving synchronous drive efficient (speed and precision) is one of problem anxious to be solved in the electromechanical control industry.
Synchronous drive mechanism design and the design of synchronization control strategy in the multi-hydraulic-cylinder synchronous drive can be referred to as the design of synchronous drive pattern again; The synchronous drive precision then comprises synchronous drive speed and the isoparametric dynamic and static tracking accuracy of displacement.Coherence between multi-hydraulic-cylinder synchronous drive pattern and the synchronous drive precision is described owing to can be subjected to factor affecting such as mechanism design diversity, load disturbance and coupling, valve-controlled cylinder electrohydraulic servo system essentially nonlinear, is difficult to provide corresponding specific descriptions in theory.Simultaneously, in the engineering practical application owing to be subjected to system's security of operation, the influence of factors such as reliability, can only provide a kind of solution preferably based on practical operation situation, can not provide certain synchronization drive pattern and the concrete qualitative and quantitative description that drives the precision coherence, it was 15m to span once that the people is for example arranged, the twin-tub of load 5t drives hydraulic pressure driving carrying out experiment, if the dynamic synchronization of will driving a vehicle Displacement error is reduced to 5mm by 10mm, its motion speed can improve 200mm/s by 100mm/s, yet but can't provide the combination that the optimum that can reach drives precision and drive pattern.Therefore, the coherence of design of synchronous drive pattern and driving precision has important theory value and practical significance in the research multi-hydraulic-cylinder synchronous drive.
Summary of the invention
The purpose of this utility model just provides a kind of device that is used to study the multi-hydraulic-cylinder synchronous driving performance.
The utility model is to solve the problems of the technologies described above the technological scheme that is adopted to be:
A kind of device that is used for studying synchronous driving performance comprises frame, load loading bench, earrings catcher, earrings, piston rod, oil hydraulic cylinder, electro-hydraulic proportional valve, Oil pump electrical machinery group, fluid filter, fuel tank.The formed rectangle plane of frame bottom is symmetrically arranged with the earrings catcher that the cross section is a concave shape near the position of four drift angles, and the earrings catcher flexibly connects by bearing pin with an end of earrings; The other end of earrings and piston rod one end fixedly install; The other end of piston rod passes end face of oil hydraulic cylinder damping loader, oil hydraulic cylinder and the piston in the oil hydraulic cylinder fixedly installs, and the oil hydraulic cylinder displacement transducer passes another end face of oil hydraulic cylinder and piston and piston rod and is slidingly matched; Piston is divided into rodless cavity and rod chamber with oil hydraulic cylinder, and rodless cavity is connected with electro-hydraulic proportional valve by pipeline respectively with rod chamber, and the pipeline between rodless cavity and the electro-hydraulic proportional valve is provided with pressure transducer and flow transducer; The oil supply loop of electro-hydraulic proportional valve and oil return loop and fuel tank join, and oil supply loop is provided with Oil pump electrical machinery group and fluid filter.The spool of electro-hydraulic proportional valve is provided with valve core displacement sensor, valve core displacement sensor, oil hydraulic cylinder displacement transducer, pressure transducer and flow transducer are connected with the input end signal of control unit, the output terminal of control unit, disturbing signal loader and signal amplifier are connected with signal synthesizer, the disturbing signal of the output signal of control unit and disturbing signal loader is synthetic through signal synthesizer, and the output signal after signal amplifier amplifies is loaded on electro-hydraulic proportional valve.
The beneficial effects of the utility model: can be used for the modeling and simulation research of multi-hydraulic-cylinder synchronous drive mechanism, control strategy design and driving precision coherence, describe multi-hydraulic-cylinder synchronous drive pattern in detail to driving the influence of precision, to tackle and to instruct of the efficient and rational application of multi-hydraulic-cylinder synchronous driving system in actual engineering field.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the control structure schematic representation of electro-hydraulic proportional valve and oil hydraulic cylinder part.
Embodiment
As depicted in figs. 1 and 2, a kind of device that is used for studying synchronous driving performance comprises frame 1, load loading bench 2, piston rod 5, oil hydraulic cylinder 6, electro-hydraulic proportional valve 7, Oil pump electrical machinery group 8, fluid filter 9, fuel tank 10.The bottom surface of frame 1 is a rectangle plane, and frame 1 bottom surface is provided with the earrings catcher 3 that the cross section is a concave shape, and earrings catcher 3 is near the rectangle drift angles and be and be symmetrical arranged, and each earrings catcher 3 flexibly connects by bearing pin with an end of corresponding earrings 4; The other end of earrings 4 and piston rod 5 one ends fixedly install; The other end of piston rod 5 passes end face of oil hydraulic cylinder damping loader 15, oil hydraulic cylinder 6 and the piston 17 in the oil hydraulic cylinder fixedly installs, piston rod 5 keeps vertical substantially with frame 1 bottom surface, and oil hydraulic cylinder displacement transducer 19 passes another end face of oil hydraulic cylinder 6 and piston 17 and piston rod 5 and is slidingly matched; Piston 17 is divided into rodless cavity 18 and rod chamber 16 with oil hydraulic cylinder, and rodless cavity 18 is connected with electro-hydraulic proportional valve 7 by pipeline respectively with rod chamber 16, and the pipeline between rodless cavity 18 and the electro-hydraulic proportional valve 7 is provided with pressure transducer 20 and flow transducer 21; Join with fuel tank 10 after the oil supply loop parallel connection of four electro-hydraulic proportional valves 7, back also in parallel in twos, oil return loop joins with fuel tank 10, and oil supply loop is provided with a cover Oil pump electrical machinery group 8 and a fluid filter 9.The spool of each electro-hydraulic proportional valve 7 is provided with valve core displacement sensor 22, valve core displacement sensor 22, oil hydraulic cylinder displacement transducer 19, pressure transducer 20 and the input end signal of flow transducer 21 with control unit 11 are connected, the output terminal of control unit 11, disturbing signal loader 13 and signal amplifier 14 are connected with signal synthesizer 12, the disturbing signal of the output signal of control unit 11 and disturbing signal loader 13 is synthetic through signal synthesizer 12, and the output signal after signal amplifier 14 amplifies is loaded on electro-hydraulic proportional valve.
The concrete working procedure of this device is: start the Oil pump electrical machinery group, control unit is controlled four electro-hydraulic proportional valves respectively and is promoted or reduce frame, in this process, gather the data comparison that the signal of each pressure transducer, flow transducer, valve core displacement sensor, oil hydraulic cylinder displacement transducer obtains being correlated with respectively, and can take different control strategies, thereby obtain the optimal control pattern under special parameter to each electro-hydraulic proportional valve.This device can also be by the synchronous drive experiment under the disturbed situation of disturbing signal loader simulation spool control signal; Test by the synchronous drive under the inconsistent situation of oil hydraulic cylinder damping loader simulated solution cylinder pressure damping; By the synchronous drive experiment under the asymmetric situation of load loading bench simulation Driven by Hydraulic Cylinder load.
Claims (1)
1. device that is used for studying synchronous driving performance, comprise frame, load loading bench, earrings catcher, earrings, piston rod, oil hydraulic cylinder, electro-hydraulic proportional valve, Oil pump electrical machinery group, fluid filter, fuel tank, it is characterized in that: the formed rectangle plane of frame bottom is symmetrically arranged with the earrings catcher that the cross section is a concave shape near the position of four drift angles, and the earrings catcher flexibly connects by bearing pin with an end of earrings; The other end of earrings and piston rod one end fixedly install; The other end of piston rod passes end face of oil hydraulic cylinder damping loader, oil hydraulic cylinder and the piston in the oil hydraulic cylinder fixedly installs, and the oil hydraulic cylinder displacement transducer passes another end face of oil hydraulic cylinder and piston and piston rod and is slidingly matched; Piston is divided into rodless cavity and rod chamber with oil hydraulic cylinder, and rodless cavity is connected with electro-hydraulic proportional valve by pipeline respectively with rod chamber, and the pipeline between rodless cavity and the electro-hydraulic proportional valve is provided with pressure transducer and flow transducer; The oil supply loop of electro-hydraulic proportional valve and oil return loop and fuel tank join, and oil supply loop is provided with Oil pump electrical machinery group and fluid filter; The spool of electro-hydraulic proportional valve is provided with valve core displacement sensor, valve core displacement sensor, oil hydraulic cylinder displacement transducer, pressure transducer and flow transducer are connected with the input end signal of control unit, the output terminal of control unit, disturbing signal loader and signal amplifier are connected with signal synthesizer, the disturbing signal of the output signal of control unit and disturbing signal loader is synthetic through signal synthesizer, and the output signal after signal amplifier amplifies is loaded on electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201922966U CN201475068U (en) | 2009-08-31 | 2009-08-31 | Device for researching synchronous driving performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201922966U CN201475068U (en) | 2009-08-31 | 2009-08-31 | Device for researching synchronous driving performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475068U true CN201475068U (en) | 2010-05-19 |
Family
ID=42411315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201922966U Expired - Lifetime CN201475068U (en) | 2009-08-31 | 2009-08-31 | Device for researching synchronous driving performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475068U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644283B (en) * | 2009-08-31 | 2012-05-23 | 杭州电子科技大学 | Device used for studying synchronous driving performance |
| CN102620985A (en) * | 2012-02-07 | 2012-08-01 | 浙江大学 | Electro-hydraulic servo loading device and loading method for adjustable pitch propeller |
| CN107685678A (en) * | 2017-07-06 | 2018-02-13 | 曹全有 | Folding house vehicle |
-
2009
- 2009-08-31 CN CN2009201922966U patent/CN201475068U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644283B (en) * | 2009-08-31 | 2012-05-23 | 杭州电子科技大学 | Device used for studying synchronous driving performance |
| CN102620985A (en) * | 2012-02-07 | 2012-08-01 | 浙江大学 | Electro-hydraulic servo loading device and loading method for adjustable pitch propeller |
| CN107685678A (en) * | 2017-07-06 | 2018-02-13 | 曹全有 | Folding house vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090831 |