CN101644283B - Device used for studying synchronous driving performance - Google Patents
Device used for studying synchronous driving performance Download PDFInfo
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- CN101644283B CN101644283B CN2009101020779A CN200910102077A CN101644283B CN 101644283 B CN101644283 B CN 101644283B CN 2009101020779 A CN2009101020779 A CN 2009101020779A CN 200910102077 A CN200910102077 A CN 200910102077A CN 101644283 B CN101644283 B CN 101644283B
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Abstract
The invention relates to a device used for studying synchronous driving performance. The existing devices feature low control accuracy and poor synchronization performance. The invention comprises a rack. Earring couplings are arranged at the bottom of the rack and are connected with earrings. One end of the earring is fixed with one end of a piston rod and the other end of the piston rod is fixed with a piston in a hydraulic cylinder. A displacement sensor of the hydraulic cylinder passes through the hydraulic cylinder and is in sliding fit with the piston and the piston rod. The hydraulic cylinder is divided into a cavity without a rod and a cavity with a rod by the piston. A pressure sensor and a flow sensor are arranged on pipelines between the cavity without a rod and electro-hydraulic proportional valves. Oil feed circuits of the electro-hydraulic proportional valves are connected with an oil tank through an oil pump motor system and an oil filter. The electro-hydraulic proportional valves are provided with displacement sensors of valve plugs. The output end of a control unit, a disturbance signal loader, a signal amplifier and a signal synthesizer are connected. After the output signals of the control unit and the disturbance signals of the disturbance signal loader are synthesized by the signal synthesizer and amplified by the signal amplifier, the output signals are loaded into the electro-hydraulic proportional valves. The device improves the synchronous driving accuracy and can better guide the synchronous driving systems to be applied in the actual engineering field.
Description
Technical field
The invention belongs to field of mechanical technique, relate 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; Like the press down system of the adjustment of the quick position of self-propelled gun, the control of high-accuracy numerical control machine tool supplying position 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 are numerous and diverse, be difficult for being detected in real time and compensation, be the difficult point during electromechanical control realizes always; How to explore the coherence between synchronous drive mechanism, 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 receive 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 receive the influence of factors such as system's security of operation, 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 object of the invention just provides a kind of device that is used to study the multi-hydraulic-cylinder synchronous driving performance.
The present invention solves the problems of the technologies described above the technological scheme that is adopted to be:
The device that is used for studying synchronous driving performance comprises frame, load platform, 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 through 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 another end face and piston and piston rod that the oil hydraulic cylinder displacement transducer passes oil hydraulic cylinder are 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 through 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 output signal of control unit and the disturbing signal of disturbing signal loader are synthetic through signal synthesizer, and the output signal loading after signal amplifier amplifies is to electro-hydraulic proportional valve.
Beneficial effect of the present invention: 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 invention;
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, the device that is used for studying synchronous driving performance comprises frame 1, load platform 2, earrings catcher 3, earrings 4, 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 angle and be and be symmetrical set, and each earrings catcher 3 passes through the bearing pin flexible connection 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 basically with frame 1 bottom surface, and another end face and piston 17 and piston rod 5 that oil hydraulic cylinder displacement transducer 19 passes oil hydraulic cylinder 6 are 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 through 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, the oil return loop also joins with fuel tank 10 after the parallel connection in twos, and oil supply loop is provided with a cover Oil pump electrical machinery group 8 and 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 output signal of control unit 11 and the disturbing signal of disturbing signal loader 13 are synthetic through signal synthesizer 12, and the output signal loading after signal amplifier 14 amplifies is to 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 the Different control strategy, thereby obtain the optimal control pattern under special parameter each electro-hydraulic proportional valve.This device can also be through the synchronous drive experiment under the disturbed situation of disturbing signal loader simulation spool control signal; Test through the synchronous drive under the inconsistent situation of oil hydraulic cylinder damping loader simulated solution cylinder pressure damping.Through the synchronous drive experiment under the asymmetric situation of load platform simulation Driven by Hydraulic Cylinder load.
Claims (1)
1. the device that is used for studying synchronous driving performance; Comprise frame, load platform, 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 through 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 another end face and piston and piston rod that the oil hydraulic cylinder displacement transducer passes oil hydraulic cylinder are 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 through 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 output signal of control unit and the disturbing signal of disturbing signal loader are synthetic through signal synthesizer, and the output signal loading after signal amplifier amplifies is to electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101020779A CN101644283B (en) | 2009-08-31 | 2009-08-31 | Device used for studying synchronous driving performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101020779A CN101644283B (en) | 2009-08-31 | 2009-08-31 | Device used for studying synchronous driving performance |
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| Publication Number | Publication Date |
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| CN101644283A CN101644283A (en) | 2010-02-10 |
| CN101644283B true CN101644283B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101020779A Expired - Fee Related CN101644283B (en) | 2009-08-31 | 2009-08-31 | Device used for studying synchronous driving performance |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465075B (en) * | 2015-12-23 | 2017-06-16 | 甘肃省机械科学研究院 | The bed plate adjusting apparatus of disc mill |
| CN112096692A (en) * | 2020-09-10 | 2020-12-18 | 北京中冶设备研究设计总院有限公司 | Double-hydraulic-cylinder driving swing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6964322B2 (en) * | 2002-04-12 | 2005-11-15 | Delaware Capital Formation, Inc. | Method and apparatus for synchronizing a vehicle lift |
| CN101135326A (en) * | 2007-09-26 | 2008-03-05 | 中南大学 | Giant-scale hydraulic press synchronous balancing hydraulic circuit |
| EP1911695A2 (en) * | 2006-10-09 | 2008-04-16 | MT-Energie GmbH & Co. KG | Method for controlling the synchronism of at least two pressurising medium cylinders and synchronism control |
| CN201106590Y (en) * | 2007-09-20 | 2008-08-27 | 徐州重型机械有限公司 | Apparatus for controlling dual-oil-cylinder synchronous shrinking |
| CN101451933A (en) * | 2008-12-18 | 2009-06-10 | 北京林业大学 | Six-dimension loading material mechanical test machine |
| CN201475068U (en) * | 2009-08-31 | 2010-05-19 | 杭州电子科技大学 | Device for researching synchronous driving performance |
-
2009
- 2009-08-31 CN CN2009101020779A patent/CN101644283B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6964322B2 (en) * | 2002-04-12 | 2005-11-15 | Delaware Capital Formation, Inc. | Method and apparatus for synchronizing a vehicle lift |
| EP1911695A2 (en) * | 2006-10-09 | 2008-04-16 | MT-Energie GmbH & Co. KG | Method for controlling the synchronism of at least two pressurising medium cylinders and synchronism control |
| CN201106590Y (en) * | 2007-09-20 | 2008-08-27 | 徐州重型机械有限公司 | Apparatus for controlling dual-oil-cylinder synchronous shrinking |
| CN101135326A (en) * | 2007-09-26 | 2008-03-05 | 中南大学 | Giant-scale hydraulic press synchronous balancing hydraulic circuit |
| CN101451933A (en) * | 2008-12-18 | 2009-06-10 | 北京林业大学 | Six-dimension loading material mechanical test machine |
| CN201475068U (en) * | 2009-08-31 | 2010-05-19 | 杭州电子科技大学 | Device for researching synchronous driving performance |
Non-Patent Citations (2)
| Title |
|---|
| 倪敬.双缸同步提升电液系统建模和控制.《机械工程学报》.2007,第43卷(第2期),81-86. * |
| 倪敬.多缸同步提升电液系统建模和控制.《机械工程学报》.2006,第42卷(第11期),81-87. * |
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| CN101644283A (en) | 2010-02-10 |
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