摘要
无刷直流电机控制系统中的霍尔传感器增大了整个系统的体积,限制了其在特殊领域的应用。提出了基于一种无位置传感器方法,通过检测反电动势位置,确定转子位置,实现同霍尔器件相同的功能。在Matlab/Simulink中构建了整个系统结构,其中转速环采用PI控制,电流环采用滞环控制,并将反电动势观测模块得到的转子位置信号送入电流环。仿真结果表明,采用文中提出的方法,能得到良好的动静态特性,使电磁转矩紧密地跟随给定,验证了其有效性。
The brushless dc motor control system with the hall sensor increases the size of the whole system, limiting its application in some special fields. A method of position sensor-less is proposed by detecting the location of the counter electromotive force, which determines the rotor position to obtain the same signal of rotor position. The system model is built in the Matlab/Simulink. The PI control regulation is applied to speed loop while hysteresis control regulation is applied to current loop, and the rotor position signal of counter electromotive force is delivered to the current loop. The simulation results show that the method proposed has good dynamic and static characteristics with the electromagnetic torque closely following the given signal, which verifies its effectiveness.
出处
《电子科技》
2015年第6期195-199,共5页
Electronic Science and Technology
基金
国家自然科学基金资助项目(41075019)
