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A dual-phase set ultra-magnetism flexible driver and its implementation method

A technology of giant magnetostrictive and giant magnetostrictive rods, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., and can solve the problem of limiting the application of electro-hydraulic servo control valves , micro-displacement output displacement and force are small, and there are no key problems such as automatic centering and return, so as to achieve the effect of large output force, large output displacement and improved overall performance

Inactive Publication Date: 2010-08-25
BEIJING UNIV OF TECH
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Problems solved by technology

However, in the process of application, there are still some key technical problems such as small output displacement and force of micro-displacement, poor continuity control, and lack of automatic centering and return, which limit the application in electro-hydraulic servo control valves.

Method used

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  • A dual-phase set ultra-magnetism flexible driver and its implementation method
  • A dual-phase set ultra-magnetism flexible driver and its implementation method
  • A dual-phase set ultra-magnetism flexible driver and its implementation method

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Effect test

Embodiment Construction

[0020] First check whether the output assembly 10 is centered, if not, adjust it through the adjustment screw 1, input direct current into the bias coil 6, and ensure that the giant magnetostrictive rod 4 works under the selected static pressure state, so that the supermagnetic The telescopic rod 4 works in the linear region.

[0021] Non-differential working mode: AC current is passed into the driving coil 5 of the single giant magnetostrictive driver on one side, and a changing magnetic field is generated to magnetize the giant magnetostrictive rod 4, and the length of the giant magnetostrictive rod 4 changes. 4. The outer side is fixed by the adjusting screw 1, and then stretches inward, pushing the micro-displacement amplification mechanism 8 to realize the amplification and transmission of the output displacement, and then output the displacement and force in the output assembly 10 through the disc spring 9; at the same time, the symmetrical side single supermagnetic The ...

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Abstract

The invention provides a novel giant magnetostrictive actuator with opposite double phases, belonging to micro drive technical filed. A pair of disc springs is sheathed on an output component and arranged in the middle position inside a housing, and two single giant magnetostrictive actuators with identical structure and size are oppositely arranged at two sides of the output component through disk springs to form a double-phase opposite structure. The invention adopts two sets of compensation mechanisms to inhibit thermal deformation, and uses a flexible hinge mechanism with single freedom degree to realize the amplification and transmission of the output displacement. The actuator is driven by the voltage difference (or biasing voltage) to realize automatic alignment and return functions. The invention has the advantages of high frequency, high control accuracy, large output force, large output displacement, simple structure, and easiness to miniaturization; and can be widely used in the research of a micro actuator and the manufacturing of a sensor, and is especially suitable to be used as a driving unit for an electrohydraulic servo-operated valve.

Description

technical field [0001] The invention relates to the application of giant magnetostrictive materials and belongs to the field of micro-drive technology. Double-phase opposed giant magnetostrictive drivers are widely used in the development of micro-drivers and the manufacture of force sensors, and are especially suitable for driving electro-hydraulic servo control valves. unit. Background technique [0002] The traditional electromagnetic torque driver has a complex structure, large volume and weight, narrow working bandwidth, low energy density, low resolution, and poor anti-interference ability. It is difficult to meet the requirements of modern industrial control systems, and its application is greatly restricted. With the development of electro-hydraulic servo valves in the direction of high pressure, large flow, high frequency response, high and low temperature environment adaptability, anti-interference and modern industries such as precision position control, aerospace...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04H02N2/06
Inventor 王新华王思民肖峰李伟
Owner BEIJING UNIV OF TECH
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