Optimal control and variable structure combination using apermanent-magnet synchronous motor

摘要

Optimal control theory is applied to design of the position andspeed controllers for an AC servomotor drive using a permanent-magnetsynchronous motor. In the proposed scheme, stator currents arecontrolled by an inner loop based on the principle of predictivecontrol. Performances and robustness of the outer loops are examined andthe structure variable is added to it to provide better performance in awide range. The proposed scheme has been implemented on an experimental1.5 kW servomotor drive using a floating-point DSP (TMS320C30).Experimental results are presented and discussed