Electromechanical static-pressure actuating system

An actuating system, static pressure technology, applied in the direction of fluid pressure actuating devices, mechanical equipment, servo motors, etc., can solve the problems of poor dynamic performance and low natural frequency of the system, so as to improve dynamic performance, improve servo performance, improve Effects of natural frequencies

Inactive Publication Date: 2018-06-22
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing electromechanical hydrostatic actuation system, the hydraulic actuator is only controlled by a single cavity, the natural frequency of the system is low, and the dynamic performance is poor

Method used

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  • Electromechanical static-pressure actuating system
  • Electromechanical static-pressure actuating system
  • Electromechanical static-pressure actuating system

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Embodiment Construction

[0030] Embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.

[0031] Combine below Figure 1-Figure 4 This embodiment will be described in detail.

[0032] figure 1 It is a structural schematic diagram of the electromechanical static pressure actuation system of the present invention, figure 2 It is the oil circuit connection diagram of the electromechanical static pressure actuating system of the present invention, as figure 1 and figure 2 As shown, the electromechanical hydrostatic actuation system o...

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PUM

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Abstract

The invention discloses an electromechanical static-pressure actuating system. The electromechanical static-pressure actuating system comprises a servo motor, a hydraulic variable pump, a first valvebank and a hydraulic cylinder. The servo motor is connected with the hydraulic variable pump through a coupling assembly. The hydraulic variable pump is connected with the hydraulic cylinder through the first valve bank. The first valve bank comprises two high-pressure pre-tightening branches. Each high-pressure pre-tightening branch comprises a first energy accumulator and a first valve. Each first energy accumulator is used for maintaining the oil pressure of the corresponding high-pressure pre-tightening branch, and each first valve is used for controlling the corresponding high-pressure pre-tightening branch to be on and off. The hydraulic variable pump is driven through the servo motor. By means of the first valve bank, two cavities of the hydraulic cylinder are in the controllable state. According to the electromechanical static-pressure actuating system, by means of the first valve bank, the high-pressure environment is provided for an oil inlet pipe and an oil return pipe of the hydraulic variable pump, so that the two oil cavities of the hydraulic cylinder are in the controllable state; the inherent frequency of the electromechanical static-pressure actuating system can beremarkably increased; and the dynamic property of the electromechanical static-pressure actuating system can be improved.

Description

technical field [0001] The invention relates to the technical field of electro-hydraulic servo control and actuation, in particular to an electromechanical static pressure actuation system. Background technique [0002] The electromechanical hydrostatic actuation system is a pump-controlled volume control system, which has the advantages of simple structure of the electromechanical system, energy saving and high efficiency, large power ratio of the hydraulic system, and strong carrying capacity. It is a new research direction in the field of hydraulic servo. In the existing electromechanical hydrostatic actuation system, the hydraulic actuator is only controlled by a single cavity, the natural frequency of the system is low, and the dynamic performance is poor. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide an electromechanical static pressure actuation system to increase the natural frequency of the syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/02F15B1/04
CPCF15B11/08F15B1/04F15B13/02
Inventor 冯利军延皓董立静谭启凡
Owner BEIJING JIAOTONG UNIV
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