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Two-dimensional Varible Reluctance Planar Motor

Summary

A kind of 2-D variable reluctance planar motor comprises: a stator base combined by a plurality of laminated steel bricks; a moving platform consisting of two rows of spaced coil-shoes; traditional sliding supports to hold said platform above said stator base; two electronic rulers for scaling the real position of the platform; traditional supporting means for holding the platform at a distance above the stator base; computer and software for generating motion command signal to PWM generator; PWM current generator for energizing the coils of the moving platform; when a reference data (the final position of the platform) is input into the computer, the computer will give command to the platform and make it moving; once the moving platform is set in motion, the electronic rules continuously detect and transfer the location data of said platform to the computer; the computer continuously compares the data sent by said rules with reference data and gives command to the platform until said two kinds of data are equal. The planar motor of this invention uses no magnets, no constant air-gap and no accurately manufactured component. The working accuracy can easily reach 0.001 mm and the cost is very low.

Supplementary Information

Inventor: Cheung, Norbert C. | Pan, Jianfei | Yang, Jinming
Priority Number: US7170203B2
IPC Current: H02K004100 | H02K004103
US Class: 31001218 | 310012 | 318135 | 318649
Assignee Applicant: The Hong Kong Polytechnic University
Title: Two-dimensional variable reluctance planar motor
Usefulness: Two-dimensional variable reluctance planar motor
Summary: The invention is used for, e.g. components insertion, integrated circuits fabrication, or precision metal cutting.
Novelty: Two-dimensional variable reluctance planar motor for, e.g. integrated circuits fabrication, includes stator base, moving platform including spaced coilshoes and coils, sliding supports, electronic rulers, current generator, and computer

Industry

Robot/Machinery

Others

CHEUNG Norbert C.
PAN Jianfei
YANG Jinming

Country/Region

USA