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Voice coil actuator integrated with eddy current displacement sensor and assembling method

A displacement sensor, integrated electricity technology, applied in the direction of electromechanical devices, electric components, electric devices, etc., can solve the problems of poor assembly dimensional accuracy and consistency, low control accuracy of voice coil actuators, etc., to improve assembly accuracy and assembly. Dimensional consistency, overcoming the difficulty of measuring assembly dimensions, and improving the effect of performance consistency

Active Publication Date: 2019-11-05
BEIJING INST OF CONTROL ENG
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  • Application Information

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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, a voice coil actuator and an assembly method of an integrated eddy current displacement sensor are proposed, which solves the problems of low control precision of the voice coil actuator, assembly dimension accuracy and The problem of poor consistency, while improving the service life and reliability of the actuator

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  • Voice coil actuator integrated with eddy current displacement sensor and assembling method
  • Voice coil actuator integrated with eddy current displacement sensor and assembling method
  • Voice coil actuator integrated with eddy current displacement sensor and assembling method

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Embodiment Construction

[0029] The invention provides a voice coil actuator and assembly method for an integrated eddy current displacement sensor, and proposes a high-precision actuator from the aspects of displacement measurement, temperature control, flexible structure design, limit design, and high-precision assembly method of the actuator. 1. Large load-bearing voice coil actuator and its assembly method. Compared with existing actuator products, the invention can greatly improve the control precision of the actuator. The invention adopts the method of coordinating the differential measurement of the eddy current displacement sensor and the calibration method, and the displacement measurement accuracy of the actuator can be improved to the submicron level.

[0030] In order to avoid large thermal deformation of the product displacement measurement part due to temperature changes, a flexible heat conduction cable is installed on the motor mover for active heat dissipation. A flexible heat conduc...

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Abstract

The invention discloses a voice coil actuator integrated with an eddy current displacement sensor and an assembling method. The voice coil actuator comprises a flexible hinge, an actuating rod, an upper shell, an eddy disc, a flexible structure, a switching shaft, a main shell, a rotor pressure plate, a voice coil motor rotor, a voice coil motor stator, a stator pressure plate, a limiting block, alimiting disc, a measuring plate, a heat conducting rope and an eddy current displacement sensor. By using a double film spring flexible structure with inner and outer backing rings with equal thickness, the rigidity of film springs is improved effectively, moreover, a rigid replacement part with equal thickness is used for replacing the flexible structure during assembling, the problem that theassembling dimensions are difficult to measure caused by the deformation of the flexible structure is overcome, and simultaneously, accurate actuator repair dimensions can be obtained. The control accuracy and bearing capacity of the voice coil actuator can be improved, and the service life of the product is prolonged.

Description

technical field [0001] The invention relates to a voice coil actuator integrated with an eddy current displacement sensor and an assembly method thereof, belonging to the technical field of space control actuators. Background technique [0002] For the control requirements of high-precision, large-load spacecraft control accuracy, stability and fast maneuvering, a voice coil actuator with vibration isolation, disturbance suppression and high-precision pointing adjustment functions is installed between the spacecraft platform and the payload. High-efficiency voice coil motors are used to achieve large-stroke, high-precision, and fast-response execution capabilities. The wide-bandwidth, high-precision eddy current displacement sensor group is used to accurately obtain the relative attitude of the load and the platform for precise control, and the flexible link is used to achieve broadband vibration isolation. And redundant control, combined with the multi-level compound contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/035H02K11/21H02K15/00G01B7/02
CPCG01B7/02H02K11/21H02K15/00H02K41/0354
Inventor 周元子唐宇航李利李准邓龙刘巍汤亮关新姚宁邢林峰
Owner BEIJING INST OF CONTROL ENG
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