期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：61
期号：2
出版社：Journal of Theoretical and Applied
摘要：The demands for BLDC motor drives in industrial applications are rapidly increasing due to its high efficiency, high power factor and lower maintenance. Therefore, it is necessary to design a stable control system for BLDC drive system to achieve a quality performance. The stability is a major problem in the closed loop BLDC drive system which may cause oscillations of constant or changing amplitude. This paper spotlights the movements of characteristic roots of the drive system on s-plane with the variation of system parameter gain �k�. The root locus and root contours of the BLDC drive system are portrayed in this paper which focuses the complete dynamic response of the system. Finally, the steady-state performance of the BLDC drive system has been investigated by calculating its steady-state error to various standard test signals. These analyses help a designer to easily visualize the effects of varying various system parameters on root locations. These analyses give good potential design specifications for the control engineers. The Matlab software package is used to analyze the results.
关键词：Brushless DC (BLDC) Motor Drives; Root Locus; Root Contour; Parameter Design; Stability; Steady-State Error.
