Authors: Shun-Chang Chang; Hai-Ping Lin
Addresses: Department of Mechanical and Automation Engineering, Da-Yeh University, No. 168, University Road, Dacun, Changhua 51591, Taiwan ' Department of Mechanical and Automation Engineering, Da-Yeh University, No. 168, University Road, Dacun, Changhua 51591, Taiwan
Abstract: The objective of this study is to analyse chaotic motion and its control in a Permanent Magnet Synchronous Motor (PMSM) in an Electric Vehicle (EV). Complex non-linear behaviours are observed over a range of parameter values in the bifurcation diagram. Hopf bifurcation and chaos may even occur in the PMSMs if the PMSMs are not properly sized. The Lyapunov exponent approach is utilised to identify the onset of chaotic motion and to verify the above analyses. Finally, an approach for effectively controlling a chaotic PMSM system is presented. The state feedback control procedure is employed to control chaotic motions in the PMSM effectively. Simulation results are presented to demonstrate the feasibility of the proposed approach.
Keywords: PMSM; permanent magnet synchronous motors; bifurcation; chaotic motion; Lyapunov exponent; state feedback control; chaos control; electric vehicles; vehicle design; motion control; simulation.
International Journal of Vehicle Design, 2012 Vol.58 No.2/3/4, pp.387 - 398
Accepted: 16 Apr 2011
Published online: 18 Jun 2012 *