A Consistency Control Method for Servo Valve Charging and Demagnetization
A control method and servo valve technology, which is applied in the field of hydraulic control, can solve the problems of excessive residual magnetism, servo valve matching and failure, etc., and achieve the effect of reducing residual magnetism and reducing residual magnetism
Active Publication Date: 2021-06-11
北京实验工厂有限责任公司
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Problems solved by technology
[0003] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a servo valve charging and demagnetization consistency control method, to avoid the problem of unqualified matching of the servo valve caused by the excessive residual magnetism of the servo valve housing assembly during the debugging process
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Embodiment Construction
[0034] The invention proposes a servo valve charging and demagnetization consistency control method to solve the problem in the prior art that the residual magnetism of the servo valve housing assembly is too large, resulting in unqualified matching of the servo valve.
[0035] The present invention firstly determines the charge and demagnetization voltage when the residual magnetism of the servo valve housing assembly is minimum, and the process is as follows:
[0036] (1) Use a demagnetizer to demagnetize the servo valve 11;
[0037] (2) Install the servo valve 11 on the magnetic isolation tool 5, and then install the magnetic guide tool 3 on the pre-stage of the servo valve;
[0038] (3) Charge and demagnetize the magnet steel 1 of the servo valve using graded test voltages, and measure the charge and demagnetization voltages when the residual magnetism of the servo valve housing assembly 4 is minimum when the magnet steel reaches magnetic saturation.
[0039] figure 1 Sh...
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Abstract
The invention discloses a servo valve charging and demagnetization consistency control method. At the beginning of debugging, a demagnetization machine is used to demagnetize the servo valve to ensure the consistency of the initial state of the servo valve; The pre-stage of the servo valve is equipped with magnetic guide tooling; finally, the magnetic steel of the servo valve is charged and demagnetized by using the charging and demagnetizing voltage when the residual magnetization of the servo valve housing assembly is the smallest, so as to ensure the consistency of the residual magnetism after the servo valve is charged and demagnetized. The invention avoids the problem that the matching of the servo valve is unqualified due to excessive residual magnetism of the servo valve housing assembly during the debugging process.
Description
technical field [0001] The invention relates to a method for controlling the consistency of charging and demagnetization of a servo valve, which belongs to the field of hydraulic control. Background technique [0002] The servo valve is an important control element in the electro-hydraulic control system, which plays the role of electro-hydraulic conversion and power amplification in the system. Charging and demagnetization of servo valve debugging process is an important link in the production of servo valves. Ensuring the consistency of servo valves after charging and demagnetization can improve the matching performance of servo valves. During the commissioning process of the servo valve, it is necessary to charge and demagnetize the pre-stage parts to ensure the working magnetic field of the pre-stage parts; the parts of the housing components will have residual magnetism due to the magnetic conduction during the magnetization process, which will affect the matching perfo...
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IPC IPC(8): H01F13/00
CPCH01F13/003H01F13/006
Inventor 张俊杰蓝燕东张福梅安懿张佳齐张宇刘迪高宏钟山李凤伟王文安张文毅冯婷婷孟健李鸿雁姬腾
Owner 北京实验工厂有限责任公司