Electro-hydrostatic actuator sensitive to load

An electro-hydrostatic and load-sensitive technology, which is applied in servo meter circuits, fluid pressure actuation devices, fluid pressure actuation system components, etc., can solve problems such as unfavorable system heating, and achieve the goal of reducing heat generation and copper loss Effect

Inactive Publication Date: 2015-07-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing load-sensitive EHAs use servo valves for commutation and control, and servo valves will generate a lot of heat during operation, which is not conducive to reducing the heat generation of the system

Method used

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  • Electro-hydrostatic actuator sensitive to load
  • Electro-hydrostatic actuator sensitive to load
  • Electro-hydrostatic actuator sensitive to load

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Embodiment Construction

[0020] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The elements and features described in one drawing or one embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. It should be noted that, for the purpose of clarity, representations and descriptions of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions.

[0021] See figure 1 Shown is a structural diagram of an embodiment of the load-sensitive electric hydrostatic actuator of the present invention.

[0022] In this embodiment, the load-sensitive electric hydrostatic actuator includes a variable displacement hydraulic pump 2, a symmetric hydraulic cylinder 5, a feedback module 4, and an actuator 7.

[0023] The symmetrical hydraulic cylinder 5 includes a symmetrical plunger and a first cy...

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Abstract

The invention relates to an electro-hydrostatic actuator sensitive to load. The actuator comprises a variable displacement hydraulic pump, symmetrical hydraulic cylinders, a feedback module and an actuating mechanism. The electro-hydrostatic actuator sensitive to load can reduce heat dissipation of a whole system and further reduce power consumption of the whole system.

Description

Technical field [0001] The invention relates to the field of an electric hydrostatic actuator, in particular to a load-sensitive electric hydrostatic actuator. Background technique [0002] EHA (Electro-Hydrostatic Actuator) is a highly integrated local hydraulic actuator, which is the actuator of the power electric actuator system in multi-electric aircraft. Compared with the traditional hydraulic actuation system, EHA has the advantages of small size, light weight, and high efficiency, which is a hot spot of current research. By adopting a load-sensitive way, energy loss can be reduced and the heat generated by the motor can be reduced. [0003] At present, the most widely used power fly-by-wire actuation system for airplanes in the world is the fixed displacement variable speed electric hydrostatic actuator, which has the advantages of simple structure and light weight. However, due to the highly integrated design, it is difficult for the system to dissipate heat; under heavy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/16F15B13/16F15B13/06F15B21/08
CPCF15B11/08F15B13/04F15B13/16F15B15/14F15B21/08F15B2211/20515
Inventor 焦宗夏宋增宁尚耀星吴帅郝伟一
Owner BEIHANG UNIV
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