volume | PIER Journals

Abstract

This paper proposes a Luenberger-observer-assisted deadbeat predictive current control (LO-DPCC) scheme to compensate the inherent one-sample sampling/computation/PWM delay in embedded PMSM drives. A discrete time Luenberger observer is designed for the dq-axis current dynamics to provide a one-step-ahead current estimate, which is embedded into a closed form deadbeat predictive control law under a unified timing configuration. The method is evaluated by MATLAB/Simulink co-simulation using multi wheel steering actuator profiles (front wheel independent + rear wheel cooperative) and by DSP-based bench experiments at 10 kHz PWM. Compared with a tuned MPC-FOC baseline and an ESO-assisted DPCC benchmark under identical constraints, LO-DPCC consistently improves speed regulation and torque smoothness, indicating that observer based one-step prediction is an effective and implementation friendly approach for delay-compensated predictive current control of PMSM drives.

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Mr. Xuchen Wang

Dr. Chenxuan Zhu