An improved deadbeat predictive current control (DPCC) approach for permanent magnet synchronous motor (PMSM) incorporating a sliding mode observer is introduced. A current inner-loop control algorithm was developed using the mathematical model of a permanent magnet synchronous motor. By introducing disturbances caused by parameter mismatches into the motor’s voltage equation, a sliding mode disturbance observer was designed to detect and monitor these disturbances. The observed system disturbances were incorporated into the deadbeat current predictive control using feed-forward compensation, which enhanced the robustness of the control parameters. The results demonstrate that the proposed control method effectively compensates for system disturbances, reduces steady-state errors, and significantly improves system robustness.