PMSM Rotor Position Detection Based on Hybrid Optical Encoder and R-Signal Zero-Setting Scheme. (25th July 2016)

• Record Type: Journal Article
• Authors: Wang, Yaoqiang; Ma, Xiaoyong; Wang, Mingdong; Cao, Chong
• Other Names: Massoud Ahmed M. Academic Editor.
• Is Part Of: Journal of control science and engineering. Volume 2016(2016)
• Publication Date: 2016-07-25
• Subjects: Control theory -- Periodicals; 629.831205
• DOI: 10.1155/2016/2712643
• Languages: English
• ISSNs: 1687-5249

Abstract

Abstract : Rotor position detection is a prerequisite for achieving good control performance of PMSM. For a PMSM control system based on an optical encoder, it is a difficulty to detect rotor position and achieve R-Signal zero-setting. To solve the problem, a hybrid optical encoder is used in the paper by which a scheme for rotor position detection and R-Signal zero-setting is proposed. This encoder can do absolute and incremental rotor position detection simultaneously; here, the former is used for acquiring imprecise rotor position and the latter is for precise rotor position. Firstly, two detection methods of the encoder are analyzed, and a scheme for rotor position detection is proposed: absolute rotor position is used for motor starting before achieving R-Signal zero-setting; once achieving R-Signal zero-setting, incremental rotor position detection that has high precision is adopted. Then a novel scheme for R-Signal zero-setting is emphatically proposed. Finally, the simulation is conducted. Results show that rotor position detection and R-Signal zero-setting can be achieved by the proposed scheme.