Composite magnetic control motor

Abstract

The invention relates to a composite magnetic control motor. The technical scheme of the invention is that: first and second magnetic control memory alloys (29, 25) pass through central holes of corresponding first and second electromagnetic converters (2, 8) respectively; the right end face of the first magnetic control memory alloy (29) is contacted with the right end face of a driven body (27); the right end of the driven body (27) passes through a displacement sensor (28); the left end of the second magnetic control memory alloy (25) is fixedly and concentrically connected with the right end of the driven body (27); the right end of the second magnetic control memory alloy (25) is fixedly and concentrically connected with the left end of a gear shaft (17); the right end of the driven body (27) passes through an angular displacement sensor (26); a rack (2) is meshed with a gear of the gear shaft (17); third and fourth magnetic control memory alloys (12, 21) pass through the centralholes of the respective corresponding third and fourth electromagnetic converters (10, 23) respectively; and the lower end face of the third magnetic control memory alloy (12) is concentrically contacted with the upper end face of the rack (20). The composite magnetic control motor has the characteristics of high frequency, compact structure, high accuracy and large output force.

Description

technical field [0001] The invention belongs to the technical field of motors. In particular, it relates to a compound magnetic control motor. Background technique [0002] The development trend of high-frequency electro-hydraulic servo system is to develop towards a response frequency above 1000Hz to meet the requirements of vibration environment test and material fatigue test in the process of new product development. The operating frequency of electro-hydraulic servo system mainly depends on the servo valve The response frequency is high or low. The electro-mechanical converter is an important part of the electro-hydraulic servo valve, and the development trend of the high-frequency electro-hydraulic servo valve puts forward higher requirements for the electro-mechanical converter. [0003] At present, the electro-mechanical converters mainly used in servo valves include traditional stepping motors, moving coil force motors, moving iron force motors, permanent magnet to...

AI Technical Summary

Problems solved by technology

[0005] Magnetic control memory alloy is a new type of material, which has the characteristics of fast response of giant magnetostrictive materials, large deformation of memory alloy and large output force. However, magnetic control memory alloy has the characteristics of difficulty in deformation recovery. Currently, there are two common solutions. One: First, it is realized by applying a magnetic field along the deformation and elongation direction of the component, but the excitation power of the required magnetic field is too large

The second is to place a return spring along the deformation direction. Although this method is easy to implement, it will reduce the output force of the magnetic control memory alloy element, cause a large positioning error, and slow down the dynamic response speed.

The above two methods are difficult to meet the actual requirements

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