| Title |
Design of an Adaptive Current Controller for a PMSM AC Servo Motor |
| Keywords |
Adaptive current control ; Hyperstability ; Inverter ; DSP TMS320C31 ; PMSM |
| Abstract |
To improve the capability of instantaneous torque control, a design method of an MRAC-based adaptive current controller for a PMSM servo motor is proposed. In the synchronous frame current controller, a new control inputs can be obtained through the decoupling compensation. Using this, a desired controller bandwidth can be assigned. However, the control performance may be degraded due to disturbances caused by the parameter variations or dead time of the switch. To improve these drawbacks, an adaptive current controller is prposed and the design method is obtained using the hyperstability theory. The asymptotic stability is proved and the effectiveness is verified through simulations and experiments using DSP TMS32OC31. |