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Direct drive type electro-hydraulic servo pressure control system

An electro-hydraulic servo and pressure control technology, which is used in fluid pressure actuation system testing, fluid pressure actuation system components, and servo motors. The effect of speed and improved control accuracy

Inactive Publication Date: 2017-09-29
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1) The leakage and compressibility of the liquid will affect the hydraulic servo control, making the control speed slow and the control accuracy low
[0009] 2) The hydraulic servo system has pressure loss, mechanical friction, leakage and other phenomena in the process of energy conversion and transmission, which will have a nonlinear impact on the hydraulic servo control, resulting in poor control stability and low precision
[0010] 3) Fluid temperature and load changes also affect the hydraulic servo control, making the control unstable

Method used

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Embodiment Construction

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to a direct drive type electro-hydraulic servo pressure control system. The direct drive type electro-hydraulic servo pressure control system comprises an execution module, a servo speed regulation module, a sliding mold control module and a feedback module, wherein the execution module is used for executing corresponding operation under pressure drive provided by hydraulic pressure; the servo speed regulation module is in rigid connection with the execution module and is used for regulating pressure provided for the execution module under corresponding electric drive signals; the sliding mold control module is used for outputting the electric drive signals to the servo speed regulation module under given signals; and the feedback module is used for feeding data collected from the execution module and the servo speed regulation module back to the sliding mold control module. Linear control can be achieved, and the control accuracy is then improved.

Description

technical field [0001] The invention relates to the technical field of hydraulic equipment, in particular to an electro-hydraulic servo pressure control system. Background technique [0002] The development of hydraulic transmission technology determines the development of construction machinery, and the degree of hydraulic transmission has become one of the important symbols to measure a country's industrial level. The advantages of the hydraulic control system are mainly manifested in: large power-to-weight ratio, small size, high frequency response, good pressure and flow controllability; good anti-interference ability, easy to realize automatic control systems such as linear motion and stepless speed regulation; Compact structure, small size, light weight, strong carrying capacity; fast response, sensitive action and so on. In the past ten years, the requirements for hydraulic servo systems such as fast speed, high power, high precision, and strong robustness have becom...

Claims

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Application Information

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IPC IPC(8): F15B21/08F15B19/00F15B11/02F15B11/10G06F17/15G06F17/50
CPCF15B11/02F15B11/10F15B19/00F15B19/007F15B21/087G06F17/15G06F30/20
Inventor 高素萍倪浪
Owner SHENZHEN POLYTECHNIC
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