Self-driven joint

A self-driving, joint technology, applied in electric components, synchronous motors with static armatures and rotating magnets, electromechanical devices, etc., can solve the problem of a large number of joints, and achieve simple joint structure, small size, and fewer components. Effect
CN101956891AActive Publication Date: 2011-01-26伶机(上海)驱动技术中心(有限合伙)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
伶机(上海)驱动技术中心(有限合伙)
Publication Date
2011-01-26

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Abstract

The invention discloses a self-driven joint, which belongs to the technical field of driving sensing control. The self-driven joint comprises a sleeve, a structural permanent magnet and a magnetic field generating device. The structural permanent magnet is arranged in the sleeve in a way of rotating around the axis of the sleeve. The magnetic field generating device is fixedly arranged outside the sleeve and comprises a magnetostrictive piezoelectric sensor and corresponding electromagnetic coils, wherein the plurality of pairs of corresponding electromagnetic coils with opposite polarities are oppositely arranged on the outer wall of the sleeve; and the magnetostrictive piezoelectric sensor is arranged on the side wall of the sleeve. The self-driven joint has a compact structure and high structural strength and can acquire sensor electric signal conveniently without being driven by any power supply.
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Description

technical field

[0001] The present invention relates to a device in the technical field of drive sensing control, in particular to a self-driven joint based on the compound action of permanent magnet, magnetostrictive and piezoelectric materials or devices. Background technique

[0002] Traditional joint mechanisms are all passively driven joint devices, and their functions are only for connection and transmission. The realization of the start-up process requires the action of an external motor. After searching the existing technology, it is found that Chinese Patent No. 20092025552.3 records a kind of "mechanical joint". Since this technology is only a simple mechanical mechanism, the structure is relatively complicated and there are many components. For similar joint devices, the action process needs to be used in conjunction with an external motor, and the degree or process of action can usually only be realized through an external sensing system. Therefore, this type o...

Claims

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