Two-dimensional force feedback type electro-hydraulic servo valve based on two freedom degrees of valve element

Abstract

A two-dimensional force feedback type electro-hydraulic servo valve based on two freedom degrees of a valve element comprises an inclined wing type torque motor and a hydraulic amplifying mechanism. An armature of the inclined wing type torque motor is composed of a horizontally-arranged center shaft and two side wing faces, the two side wing faces and the left pole shoe surfaces and the right pole shoe surfaces of an upper yoke and a lower yoke represent the 180-degree array characteristic with a vertical axis as a center axis, the two side wing faces are inserted between the pole shoe surfaces of the upper yoke and the lower yoke in parallel, and four work air gaps identical in height are formed. The inclined wing type torque motor is connected to one end of a valve body, and the center axis of the armature and the center axis of the valve element are located on the same straight line.

Description

technical field [0001] The invention relates to the field of electro-hydraulic servo control components, in particular to a two-dimensional force-feedback electro-hydraulic servo valve based on two degrees of freedom of a valve core. Background technique [0002] Since the emergence of electro-hydraulic servo control technology in the 1940s, it has occupied a high-end position in electromechanical transmission and control technology due to its high power-to-weight ratio, large output force (torque) and excellent static and dynamic characteristics. It is mainly used in aerospace , military weapons, ships, large power stations, steel, material testing machines and vibration tables and other key occasions, so it is regarded as the key competitiveness of industries in various countries. As the core control element, the electro-hydraulic servo valve plays a decisive role in the performance of the entire electro-hydraulic servo system, and has always been one of the research hotsp...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the existing two-dimensional electro-hydraulic servo valve with direct position feedback, the spiral groove structure on the inner surface of the valve sleeve has high processing costs, difficult to guarantee accuracy, and low processing efficiency, and the traditional force feedback electro-hydraulic servo valve is difficult to apply Insufficient in high pressure and large flow occasions. The present invention provides a two-dimensional force feedback electro-hydraulic servo valve with simple structure, low processing cost and suitable for high pressure and large flow occasions.

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