Measuring and controlling system of electro-hydraulic servo valve

Abstract

A measuring and controlling system of an electro-hydraulic servo valve comprises a hardware part and a software part, wherein the hardware part comprises sensors, an acquisition card, a signal conditioning circuit and a computer; the software part comprises three test modules which are respectively of an electro-hydraulic servo valve static characteristic module, and a PID closed-loop control module and an electro-hydraulic servo valve dynamic characteristic module. Firstly, signals of the sensors pass through a hardware conditioning circuit and then are subjected to the A / D (Analog to Digital) conversion through the acquisition card to be converted into digital signals; signals compiled by the software are subjected to the D / A (Digital to Analog) conversion through the acquisition card and then serve as control signals of the servo valve; test functions are realized through all modules in a program; the measuring and controlling system has the advantages that the environment of the measuring and controlling system is effectively improved, the test cost of the electro-hydraulic servo valve and the impact of the personal factors are reduced, operation steps are greatly simplified, and the accuracy and efficiency of testing are improved.

Description

technical field [0001] The invention is an electro-hydraulic servo valve measurement and control system, which belongs to the technical field of electro-hydraulic servo valve testing. Background technique [0002] The electro-hydraulic servo valve is a high-precision component that combines mechanical, electronic and hydraulic technologies. It has the advantages of high control precision, fast response, flexible signal processing, large output power and compact structure. It is widely used in metallurgical machinery, aerospace, ships, etc. and weapons industry and other major fields. The detection of the electro-hydraulic servo valve is of great significance to ensure the performance index of the servo valve and the accurate, fast and stable work of the electro-hydraulic servo control system. [0003] The FESTO TP511 test bench is a hydraulic servo system test bench produced by the German FESTO company. Its physical hardware conditions should also be at the international ad...

AI Technical Summary

Problems solved by technology

But it still adopts the traditional manual measurement and control system, which uses buttons, signal generators, recorders, oscilloscopes, etc. to achieve, the test cost is high, the structure is complex, the test is greatly affected by human factors, the test accuracy is poor, and the precision is low

It has been difficult to adapt to the hydraulic and pneumatic industry's requirements for system design, testing and monitoring of electromechanical hydraulic integration

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