Abstract：Aimed at the issues of deadbeat direct torque and flux control strategy（DB-DTFC）such as relying

on the accurate motor model，high computational load，and coupling between torque and flux，a simplified strategy of DB-DTFC for permanent magnet synchronous motor which based on flux planning was proposed. Firstly，perform flux linkage planning for the permanent magnet synchronous motor across the full-speed-range within the stator field-oriented flux linkage coordinate system. Secondly，utilizing d-axis flux for decoupling torque and flux linkage，and a sliding mode torque controller was designed to construct a simplified strategy of DB-DTFC with small signal closed-loop. Finally，simulation and experimental results show that compared with the traditional DBDTFC，the simplified DB-DTFC proposed has a shorter calculation time and is not sensitive to the change of motor inductance. At the same time，it has better flux and torque tracking performance. This strategy achieves highperformance motor control through the domestically developed 335 chip，demonstrating a viable pathway for

implementing DB-DTFC methodology in cost-efficient hardware architectures. It provides critical technical

validation for advancing industrial-grade motor control systems that balance premium performance with economic

feasibility.

      Key words：permanent magnet synchronous motor（PMSM）；direct torque control（DTC）；deadbeat control；sliding mode contro（l SMC）