Coil-external inclined wing torque motor

Abstract

The invention discloses a coil-external inclined wing torque motor mounted at one end of a hydraulic amplifying mechanism of a force feedback two-dimensional electro-hydraulic servo valve. The coil-external inclined wing torque motor consists of left and right yokes, a gag bit, upper and lower permanent magnets, left and right coils and the like; the left and right yokes and the gag bit are both magnetizers; the left and right yokes are C-shaped structures; the C-shaped structures include closed sides formed by upper and lower sides and side stand columns, and opening sides opposite to the closed sides; the opening sides of the left and right yokes are opposite; the left and right coils are respectively wound on the side stand columns of the left and right yokes; the gag bit is connected with a valve element of the hydraulic amplifying mechanism, and is connected with a spring rod in a twisting direction; the gag bit consists of a center shaft horizontally arranged and two side wing surfaces; the two side wing surfaces and pole shoe surfaces of the left and right yokes represent 180-degree array characteristics with vertical axis as center axis; four working air gaps are the same in height; and the height change of the four working air gaps is influenced by rotation of the gag bit, and is also influenced by axial displacement of the valve element to realize force feedback of the displacement of the valve element to the torque motor.

Description

technical field [0001] The invention relates to the field of electro-mechanical converters used for electro-hydraulic servo control elements, in particular to a novel coil external-mounted oblique-wing torque motor for two-dimensional electro-hydraulic servo valves. 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 alwa...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing inclined-wing torque motors, such as the small effective window area of ​​the armature, and the difficulty in collaboratively optimizing the design of electromagnetic structural parameters, the present invention provides a motor with a simple structure, a large effective window area of ​​the armature, and is conducive to realizing the balance between the main structure and electromagnetic parameters. A new coil-mounted oblique-wing torque motor for two-dimensional electro-hydraulic servo valves designed collaboratively

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