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中文摘要：
阐述了直接转矩控制（DTC）的基本原理。针对DTC系统的六边形磁链、圆形磁链以及折角调制时的十八边形磁链轨迹进行了MATLAB／Simulink的建模与仿真研究，给出仿真结果并分析了不同磁链轨迹DTC系统的特点。仿真结果证明了该建模方法的合理性和有效性，为实际异步电机DTC系统的设计提供了思路。
英文摘要：
The basic principles of the direct torque control （ DTC ） were simply presented. For the six-corner stator flux curve,the circle stator flux curve and the eighteen-comer stator flux curve of fold angle control in the DTC system, the model and simulation were developed with the MATLAB/Simulink software. The results of the simulation and the characteristics of the DTC system with different stator flux curve were given. The reasonability and validity had been testitied by the simulation results and this method offered the thoughtway for designing the actual asynchronous motor DTC system.
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