摘要：直接推力控制(DFC)是在直接转矩控制(DTC)的基础上发展起来的，以其结构简单、推力响应快、控制性能优越、鲁棒性好等特点，受到广泛关注。将直接推力控制引入永磁直线同步电机(PMLSM)的运行性能控制，提高系统的运行稳定性是一个具有研究价值的领域。在分析直接推力控制原理的基础上，结合所建立的PMLSM的数学模型，对DFC的推力控制和磁链控制进行研究。分析DFC的原理、系统构成，以及实现方法，利用Simulink进行系统建模，并对负载起动后减载、负载起动后加速两种PMLSM运行状态进行仿真。仿真结果验证了所搭建的控制系统模型的正确性和可行性，表明PMLSM直接推力控制具有良好的静、动态性能。
关键词：PMLSM；直接推力控制；建模与仿真

Abstract:  Direct force control (DFC) with the advantages of simple structure, fast force response, superior control performance, is developed from direct torque control (DTC). So, it is attracting more attention, increasingly becoming a research hot in the control field. It is a valuable research to improve the operation stability of PMLSM by the direct force control. In this paper, based on DFC principle analysis, the force control and flux control theory of DFC was studied according to the mathematical model of PMLSM. The structure and implementation method of DFC was analyzed, and then the DFC system simulation model for PMLSM was built by Matlab/Simulink. The simulation results show the feasibility of the simulation model, with good static and dynamic performance.
Key words:  permanent magnet linear synchronous motor; direct force control; modeling and simulation