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Electromagnet-driven digital hydraulic servo actuator

A technology of electromagnets and actuators, applied in the direction of servo motors, fluid pressure actuation devices, fluid pressure actuation system components, etc., to achieve the effect of small size, low cost, and portability

Inactive Publication Date: 2016-04-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, high-end actuators are generally required in the market to have the characteristics of high reliability, high protection, high explosion-proof grade, high intelligence, small size, light weight, etc., but traditional hydraulic actuators are difficult to meet the above requirements at the same time

Method used

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  • Electromagnet-driven digital hydraulic servo actuator

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] like figure 1 As shown, the electromagnet-driven digital hydraulic servo actuator mainly includes electromagnet-driven hydraulic power unit 1, electromagnetic reversing valve 2, two-way hydraulic lock 3, executive hydraulic cylinder 4, displacement sensor 5, power amplifier 6, and control system 7. It is composed of accumulator 8, electronically controlled two-position two-way valve 9 and other components.

[0028] like figure 2 As shown, the electromagnet-driven hydraulic power unit consists of a plunger 11, an electromagnet 12, a unit pump body 13, an oil inlet 14, a passive one-way cone valve 15 at the oil inlet, and an oil outlet 17, and the oil outlet is driven by one-way movement. Cone valve 16 etc. constitute.

[0029] The actuator is powered by a hydraulic power unit 1 driven by an integrated electromagnet, and the hydraulic power unit is integrated ...

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Abstract

The invention discloses an electromagnet-driven digital hydraulic servo actuator. A hydraulic power unit in the electromagnet-driven digital hydraulic servo actuator is composed of an electromagnet, a piston, a cone valve, a cylinder body and the like. The electromagnet moves to drive the piston to move, thereby pressurizing the hydraulic oil; and the extruded hydraulic oil provides power for the actuator. The oil duct of the actuator is provided with a bidirectional hydraulic lock, thereby preventing the actuator from losing control due to power cut and other reasons in the working engineering. An energy storage device on the mechanism oil duct stores energy in the extending stroke process, and releases the energy in the return process, thereby implementing the quick-return motion of the actuator. A servocontrol unit comprises a displacement sensor, which is installed on the actuator and used for feeding the speed and displacement of the actuator back to a control system; and the control system sends out a corresponding control signal, thereby implementing digital servo control. By using the integrated hydraulic power unit as a power source, the electromagnet-driven digital hydraulic servo actuator has the advantages of small size and high thrust, has flame resistance after being sealed, can easily implement digital servo control, and can control the cost on a lower level.

Description

technical field [0001] The invention relates to a digital hydraulic servo actuator driven by an electromagnet (hereinafter referred to as the actuator). More precisely, it involves an integrated, high-precision electro-hydraulic servo actuator consisting of three modules: a hydraulic power unit driven by an electromagnet, a hydraulic execution system, and a servo control unit. Background technique [0002] Actuator refers to a type of mechanism that uses liquid, gas, electricity or other energy to convert energy into drive through a certain mechanical device. A hydraulic actuator is a device that uses high-pressure hydraulic oil to drive the movement of the actuator. Compared with other actuators, it has the advantages of small inertia, fast response, huge force, and stable operation. However, the existing hydraulic actuators use an independent hydraulic pump as the power source and mostly use integrated operational amplifier control, resulting in disadvantages such as poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/17F15B21/08
CPCF15B11/17F15B21/08
Inventor 王林翔栾宇陈惟峰
Owner ZHEJIANG UNIV