DSP-based PMSM drive design for electric injection moulding machines
by Ming-Shyan Wang
International Journal of Computer Applications in Technology (IJCAT), Vol. 36, No. 2, 2009

Abstract: The paper is focused on DSP-based drive design of Permanent Magnet Synchronous Motors (PMSMs) and its application to electric injection moulding machines. An in-parallel interlaced sample-and-hold structure is proposed to improve accuracy of low-velocity computing due to low-resolution encoders. The simple but effective PI control whose gains are individually tuned by Bode diagram and an extension of frequency zone-based method is employed for compatibility with conventional ones. Pressure drop at the v/p transfer point in injection process is overcome by adaptive fuzzy control. Finally, an emulation system including PMSM coupled by a lead screw validates the proposed algorithms.

Online publication date: Thu, 13-Aug-2009

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