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Date of Publication:2022-10-07

Journal:振动 测试与诊断

Affiliation of Author(s):机械工程学院

Issue:4

Page Number:539-546

ISSN No.:1004-6801

Abstract:Giant magnetostrictive materials (GMM) as a new type of functional materials have been used in the precise actuator technique, due to their excellent advantages of large magnetostriction, high energy density, low driving magnetic field, high magnetomechanical coupling coefficient and fast response capability. GMM can be used as the core element in many devices. On the one hand, micro displacement actuators, force actuators and vibrators can be developed on the basis of positive magnetostrictive effect; on the other hand, force sensors, torque sensors, displacement sensors and energy converters can be developed on the basis of inverse magnetostrictive effect. Moreover, GMM devices which have driving, force measuring, output force sensing and output force controllable functions can be developed on the basis of coupling effect between positive and inverse magnetostrictive effects, and used in the field of precision driving. The positive magnetostrictive effect, inverse magnetostrictive effect and coupling effect between positive and inverse magnetostrictive effects are analyzed. Based on the analyses, the development principle and application status of giant magnetostrictive sensors, actuators and devices with driving and sensing functions are stated.

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