Extended State Observer-Based Sliding Mode Control with New Reaching Law for PMSM Speed Control. (9th June 2016)

• Record Type: Journal Article
• Authors: Qian, Junzhang; Xiong, Ai; Ma, Wenli
• Other Names: Mehdi Driss Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2016(2016)
• Publication Date: 2016-06-09
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2016/6058981
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : In order to improve the performance of external disturbance rejection of permanent magnet synchronous motor (PMSM) in speed control, sliding mode control with extended state observer is adopted in this paper. First, an exponential function-based sliding mode reaching law (ESMRL) is developed. The ESMRL can dynamically adapt to the variations of the controlled system, which decrease the reaching time in reaching stage and void chattering in sliding motion stage while maintaining high tracking accuracy of the servo system. Then, an extended state observer (ESO) is introduced to the controller to simultaneously estimate external disturbance and compensate the uncertainties. Simulation results demonstrate that the proposed method has better suppression of chattering effect and disturbance rejection ability while ensuring dynamic performance.