Digital electro-hydrostatic actuator system

An electro-hydrostatic and actuator technology, applied in fluid pressure actuating system components, fluid pressure actuating devices, servo motors, etc., can solve the problem of low control accuracy of hydraulic system, inability to adapt to hydraulic system, and limitation of electro-hydrostatic actuators and other problems, to achieve the effect of realizing flow regeneration, improving control accuracy and saving energy.

Active Publication Date: 2020-04-07
YANSHAN UNIV
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional electrostatic hydraulic actuators are generally pump-controlled hydraulic cylinders, so the system responds slowly
When the actuator is an asymmetric cylinder, the control accuracy of the hydraulic system is low due to the influence of the unbalanced flow characteristics of the asymmetric hydraulic cylinder
When the control element is a hydraulic control check valve, the opening and closing time of the valve port is long and cannot meet the high frequency response requirements of the hydraulic system. Although the electro-hydraulic servo valve has a short response time and can obtain high control accuracy, but It has poor anti-pollution ability and high heat generation
Various problems limit the development of electrostatic hydraulic actuators in the direction of high efficiency, energy saving, high response, high control accuracy and high reliability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Digital electro-hydrostatic actuator system
  • Digital electro-hydrostatic actuator system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, and are not exhaustive of all the embodiments. And in the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

[0027] The inventor noticed during the invention process that the traditional electrostatic hydraulic actuator has the problems of small control freedom, low precision, slow commutation response and low action reliability.

[0028] In view of the above deficiencies, an embodiment of the present invention proposes a digital electrostatic fluid actuator system, which will be described in detail below.

[0029] Such as figure 1 One of the embodiments of the dig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a digital electro-hydrostatic actuator system. The system comprises a servo motor and a hydraulic pump, wherein the servo motor is connected with the hydraulic pump; a high-speed switch valve bank which is connected with the hydraulic pump; the hydraulic cylinder which is connected with the high-speed switch valve bank, wherein a piston rod of the hydraulic cylinder is connected with a load; a signal processor which is used for receiving signals and parameters of the sensor; and a system state control unit which is connected with the signal processor and is used for controlling the actions of the servo motor and the high-speed switch valve bank according to the feedback signal or parameter information so as to form differential control and load independent control. The system is higher in control freedom degree, higher in control precision, energy-saving and reliable in action.

Description

technical field [0001] The invention belongs to the technical field of electro-hydraulic control, in particular to a digital electro-hydraulic actuator system. Background technique [0002] With the increasing demand for flexible use and low energy consumption of drive mechanisms in aerospace and traditional industries, electrohydrostatic actuators will be widely used in high-power servo mechanisms for future aircraft. [0003] The electrohydrostatic actuator is a highly integrated system of motors, hydraulic pumps, hydraulic valves, accumulators and hydraulic cylinders. Its advantages lie in its high power-to-weight ratio and transmission efficiency. However, traditional electrohydrostatic actuators are generally pump-controlled hydraulic cylinders, so the system responds slowly. When the actuator is an asymmetric cylinder, the control accuracy of the hydraulic system is low due to the influence of the unbalanced flow characteristics of the asymmetric hydraulic cylinder. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/02F15B21/08F15B1/04
CPCF15B11/08F15B13/023F15B21/08F15B1/04
Inventor 姚静刘翔宇王佩尹钰鑫董兆胜
Owner YANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap