| Abstract |
Torque ripple minimization in electrical drives can be achieved either by improving motor design or by adequate driver control. In high performance drives the instantaneous motor torque control strategy is mandatory and, sometimes, torque ripple may be also compensated by the speed control system. To accomplish that, the classical PI speed control scheme must be improved by adding a feedforward loop using a torque observer. In this paper disturbance observer control strategy is investigated for implementation on
electrical drives. This technique can reduce significatively speed fluctuation due to load torque, electromagnetic parasitic torques of the motor and variation of system parameter. Detailed analysis and full simulation results together with various experimental setting up descriptions are presented. |
