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Intelligent self-checking electro-hydraulic servo valve

An electro-hydraulic servo valve, servo valve technology, applied in the direction of servo motor components, valve details, multi-way valves, etc., can solve the problems of no oil pressure self-adaptation, lack of valve core usage status monitoring function, etc.

Pending Publication Date: 2021-07-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current electro-hydraulic servo valve lacks the monitoring function of the spool usage status, and does not have the function of oil pressure self-adaptation

Method used

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  • Intelligent self-checking electro-hydraulic servo valve
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  • Intelligent self-checking electro-hydraulic servo valve

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] Such as figure 1As shown, an intelligent self-test electro-hydraulic servo valve includes a valve body 5, an upper shell 2, a torque motor 19, an armature 18, a servo valve controller 21, a double nozzle baffle 17, a pressure transmitter 15, and a feedback rod 11 , LVDT displacement sensor 9, displacement sensor circuit 10, slide valve assembly and orifice opening adjustment assembly; upper casing 2 and valve body 5 are fixed; servo valve controller 21 is fixed in upper casing 2; torque motor 19 is placed in upper casing 2, and fixed with the valve body 5, controlled by the servo valve controller 21; one end of the double nozzle baffle 17 is fixed with the spring tube 20, and the other end is fixed with the end of the feedback rod 11; the armature 18 is set on the two ends of the torque motor 19 Inside the armature coil; the spring tube 20 is fixed to the middle of ...

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PUM

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Abstract

The invention discloses an intelligent self-checking electro-hydraulic servo valve. An existing electro-hydraulic servo valve does not have a function of monitoring the using condition of a valve element and does not have an oil pressure self-adaption function. The intelligent self-checking electro-hydraulic servo valve comprises a valve body, a torque motor, an armature, a servo valve controller, a double-nozzle baffle, a pressure transmitter, a feedback rod, an LVDT displacement sensor, a displacement sensor circuit, a sliding valve assembly and a throttling hole opening adjusting assembly. The position of the sliding valve assembly is controlled through the torque motor, the armature, the double-nozzle baffle and the feedback rod, and the position of the sliding valve assembly is fed back through the LVDT displacement sensor and the displacement sensor circuit. When a fault occurs to the intelligent self-checking electro-hydraulic servo valve, a position feedback centering sliding valve can be controlled to be in a safe operation state; an upper computer can predict the service life according to position feedback of an electrostatic induction sensor in the sliding valve assembly; and when abrasion of the position feedback centering sliding valve reaches a set value, the position error of the position feedback centering slide valve can be compensated by adjusting the size of a throttling hole of the throttling hole opening adjusting assembly.

Description

technical field [0001] The invention relates to an electro-hydraulic flow servo valve, in particular to an electro-hydraulic flow servo valve integrating wear self-checking function, oil pressure self-adaptation and high-precision negative feedback control. Background technique [0002] The electro-hydraulic servo valve is an ultra-high-precision precision device that combines mechanical, electronic and hydraulic technologies. It connects the electrical part, mechanical part and hydraulic part of the entire servo mechanism system, and can perform mechanical signals and hydraulic signals. and electrical signals, and amplify these signals, so that the mechanical actuator can be controlled. Therefore, the performance and reliability of the electro-hydraulic servo system directly depend on the quality of the electro-hydraulic servo valve. [0003] Compared with the force feedback electro-hydraulic servo valve, the dual-nozzle baffle electro-feedback electro-hydraulic servo valv...

Claims

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Application Information

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IPC IPC(8): F15B13/02F15B19/00F16K11/065F16K31/06F16K37/00
CPCF15B13/021F15B19/00F16K37/0091F16K11/065F16K31/06
Inventor 王志强戴泽军项锦波何寒锋毋少峰
Owner HANGZHOU DIANZI UNIV
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