Reduced-Order Feedback Linearization for Independent Torque Control of a Dual Parallel-PMSM System

In this project, a reduced-order feedback-linearization method. In the first place, an extra order-reducing step that separates the system as a main system and an auxiliary system is applied. Then a feedback-linearization method is applied to the reduced-order system. With these effort, the original system can be converted into a linear time-invariant system bringing the controller design problem into the linear domain.

 In the last step, a linear robust state-feedback controller is used to achieve the speed control as well as compensate the unmeasurable external load torque. An extensive experiment is given to verify the feasibility and good performance in a highly unbalanced load torque situation of the designed controller. The simulation results are simulated by using Matlab/Simulink 2018a Software.

Keywords: Parallel PMSM, robust control, feedback-linearization.