Chaotic motion control in DC motor based on resonant parametric perturbation

ZHAN Mengmeng，ZHOU Yufei，CHEN Junning
（School of Electronics and Information Engineering， Anhui University， Hefei 230601， China）

Abstract： Aiming at the phenomenon of chaos and bifurcation movement under certain parameters and control for DC motor， which will lead to the loss of the motor system and run random， through establishing the exact equation of state models and discreting  iterative nonlinear mapping， Permanent magnet synchronous motor(PMSM) chaotic phenomena was analyzed， and it was controlled by the method of resonant parametric perturbation Firstly,   a parameter of speed was selected， which is greater impacting on the DC motor system， and easy to change. Then，  a small sinusoidal perturbation signal was joined to achieve chaos control system The theoretical analysis and numerical simulation results indicate that the bifurcation of motor system in the chaotic state is basically the same in two methods of establishing the accurate equation of state model and discrete iterative nonlinear mapping， and by  the parameters disturbance of the motor speed in a specific frequency， the system can be stabilized in a periodic orbit That is the chaotic motion of the system can be weakened or even eliminated in appropriate parameter perturbation
Key words： resonant parametric perturbation;DC motor; chaos control;  discrete map