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An electro-hydraulic servo system with two valves connected in parallel and its control method

The technology of an electro-hydraulic servo system and control method is applied in the field of electro-hydraulic servo system and its control to achieve the effects of improving tracking accuracy and stability, speeding up solution speed, and reducing overshoot amount.

Active Publication Date: 2021-07-27
ZHOUSHAN INST OF CALIBRATION & TESTING FOR QUALITY & TECHNICAL SUPERVISION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, its double-valve parallel electro-hydraulic servo system is simply a system device composed of two identical servo valves connected in parallel. different physical characteristics of the valve to control

Method used

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  • An electro-hydraulic servo system with two valves connected in parallel and its control method
  • An electro-hydraulic servo system with two valves connected in parallel and its control method
  • An electro-hydraulic servo system with two valves connected in parallel and its control method

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Embodiment Construction

[0098] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0099]The double-valve parallel electro-hydraulic servo system of the present invention includes a hydraulic module and a control circuit module. The hydraulic module includes: plunger pump, three-phase motor, one-way valve, oil return filter, pressure gauge, overflow valve, oil tank, three-position four-way servo solenoid valve, three-position four-way proportional solenoid valve, high pressure Hoses, hydraulic cylinders. The three-phase motor is connected and drives the plunger pump to provide power for the device; the oil inlet of the plunger pump is connected to the oil tank; the oil outlet of the plunger pump is connected with a check valve and an oil return filter; The meter is connected with the oil return filter and overflow valve; the P oil inlet pipeline of the three-position four-way servo solenoid valve is connected with the P oil ...

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Abstract

The invention discloses an electro-hydraulic servo system with two valves connected in parallel, including a plunger pump, a three-phase motor, a three-position four-way servo solenoid valve and a three-position four-way proportional solenoid valve. The three-phase motor is connected with the plunger pump, and the column The oil inlet of the plunger pump is connected to the oil tank; the oil outlet of the plunger pump is connected to the one-way valve and the oil return filter; the oil return filter and the overflow valve are set on the main oil return pipeline; the three-position four The three-position four-way proportional solenoid valve is connected to the three-position four-way proportional solenoid valve, and the signal terminals of the three-position four-way servo solenoid valve and the three-position four-way proportional solenoid valve are connected to the control circuit module. Its control method is to first define the parameters in the electro-hydraulic servo system with double valves in parallel; then restrict the input and output conditions of the electro-hydraulic servo system with double valves in parallel; then initialize the values ​​output in the input and output modules; finally realize the real-time control function. The invention can realize the optimal configuration and control of the two valves and the precision control of the electro-hydraulic servo system.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, in particular to an electro-hydraulic servo system with two valves connected in parallel and a control method thereof. Background technique [0002] Hydraulic technology Compared with electric and pneumatic components, hydraulic components have higher power and torque and smaller volume under the same conditions, which makes the electro-hydraulic servo system more compact in structure and has faster response speed . Therefore, electro-hydraulic servo control technology can be widely used in marine engineering, industrial production, aerospace technology and other fields. However, with the further development and use of electro-hydraulic servo technology in the market, the accuracy and requirements of electro-hydraulic servo systems are getting higher and higher, and correspondingly higher requirements are put forward for its system indicators, including system control accuracy, dynamic Res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08F15B21/08
CPCF15B11/08F15B21/08
Inventor 苏世杰刘霞勇唐文献陈赟齐继阳
Owner ZHOUSHAN INST OF CALIBRATION & TESTING FOR QUALITY & TECHNICAL SUPERVISION
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