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High Performance Control of Linear Hybrid Stepping Motor with Force Ripple Compensator  

Hwang Tai-Sik (영남대 전기공학과)
Seok Jul-Ki (영남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.10, no.6, 2005 , pp. 527-533 More about this Journal
Abstract
The linear hybrid stepping motors (LHSM) has been widely used due to its simple structure and low cost control. Despite of its attractive features, the conventional LHSM has the multiples of 4th times harmonic reluctance force from excitation current and cogging force from space harmonic of permeance. This paper propose a new LHSM, which the mechanical and electrical phase difference are $45^{\circ}$. The proposed motor shows a unique ability to deliver low detent force and we propose a closed-loop control scheme to attack the ripple force for high performance applications. An analytical and experimental comparison between conventional and proposed LHSM is evaluated to confirm the effectiveness of the proposed modeling and control scheme.
Keywords
Linear hybrid stepping motors (LHSM); 4th times harmonic reluctance force; Cogging force; Low detent force; Closed-loop control;
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