PCH control and L2 gain disturbance attenuation of induction motor

Aiming at the problem of induction motor (IM) parameters uncertainty, a novel L2 gain disturbance attenuation control algorithm based on Port-Controlled Hamiltonian (PCH) systems theory is presented for IM. Firstly, a PCH system model of IM is established. Secondly, using interconnection and damping assignment, the desired state error PCH structure is assigned to the closed-loop IM system by the energy-shaping (ES) principle when inductance and resistance parameters are known and constant. Thirdly, following the idea of field orientation, the desired equilibrium of the system is obtained. At last, L2 gain disturbance attenuation technique is applied to the closed-loop PCH control of IM system when inductance and resistance parameters are uncertain. The simulation results show that the proposed scheme has a good performance and designed control system has better robustness than ever before.

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