Linear control of DC motor drive with field weakening

This paper considers a linear control design of separately excited DC motor system (SEDCM) operated in the field weakening high speed regime. Nonlinear multiple input - multiple output (MIMO) feedback linearization is applied and a linear controller schema is proposed. It is shown that very good control performances can be obtained with the classical PI cascaded linear controllers in conjunction with the linearized SEDCM model. Simulation results presented validate the proposed control strategy.