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has been cited by the following article:

• TITLE: Optimal Design and Control of a Torque Motor for Machine Tools

  AUTHORS: Yee-Pien YANG, Shih-Chin YANG, Jieng-Jang LIU

  KEYWORDS: Multi-Objective Optimization, Torque Motor, Machine Tool, Optimal Current Waveform

  JOURNAL NAME: Journal of Electromagnetic Analysis and Applications, Vol.1 No.4, December 31, 2009

  ABSTRACT: This paper presents a systematic approach of optimal design and control of a surface-mount, permanent-magnet synchronous torque motor for the next-generation machine tools. A step-by-step procedure of optimization integrates multiple performance objectives and constraints to help the designer make the best decision on the final motor geometry from both design and control perspectives. In the perspective of design, a torque motor with concentrated windings and similar numbers of slots and poles may achieve the desired performance after optimization for multiple objectives, leading to a sinusoidal flux density for a nearly ripple-free torque distribution. From the control perspective, an optimal current waveform with an ideal shift angle is determined for each phase by aligning the current excitation with the back electromotive force. Both design and control of the surface-mount, permanent magnet machine are verified by the finite element method, and a prototype is fabricated for performance validation.