Abstract: Aiming at the problem of chaotic behavior of permanent magnet synchronous motor, based on Lyapunov stability theory, we proposed a nonlinear feedback controller to realize the stable operation of the chaotic system of a single motor. The effectiveness of the control strategy was verified by theoretical analysis and numerical simulation. By using the motor with feedback controller as the external coupling system, the coordinated coupling function of multiple motors was established to realize the chaos suppression behavior of the whole ring motor networks.

Key words: permanent magnet synchronous motor, chaos, coupling, ring network