Current Compensation Control Strategy for Reduction Normal Force Ripple of PMLSM

Jian Rong Ning; Cheng Yuan Wang; Jia Kuan Xia; Li Shen

doi:10.4028/www.scientific.net/AMR.433-440.7275

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 433-440Current Compensation Control Strategy for...

Current Compensation Control Strategy for Reduction Normal Force Ripple of PMLSM

Abstract:

The ripple normal force of permanent magnet linear synchronous motor (PMLSM) can directly deteriorate the machining accuracy of ultra-precision CNC machine tool which use linear motor direct drive. First, the normal force of PMLSM was calculated using finite element method (FEM) .then, id current compensate lookup table was established by indexing iq current, gap and position of mover .In order to reduce the ripple of normal force and keep the thrust steady, PMLSM current compensation control system was realized by injecting the id current to counteract the normal force ripples using field oriented control (FOC) method. The effectiveness of this proposed method is verified by the simulation using Matlab according to the comparison between the compensation and no compensation cases.

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Periodical:

Advanced Materials Research (Volumes 433-440)

Pages:

7275-7280

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.433-440.7275

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Online since:

January 2012

Authors:

Jian Rong Ning, Cheng Yuan Wang, Jia Kuan Xia, Li Shen

Keywords:

Current Compensation, Finite Element Method (FEM), Normal Force Ripple, PMLSM, Ultra-Precision CNC Machine Tool

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References

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