摘要
对城市轨道车辆门控器的关键技术问题提出了解决方案。针对门控直流无刷电机固有的低速换向转矩脉动问题,采用单斩PWM_ON的调节方式保证换向期间非换向相电流不变来抑制低速换向转矩脉动;结合DSP的直流无刷电机技术和自适应模糊PID控制算法,实现对门控直流无刷电机的双闭环控制,以此来提高门控系统的鲁棒性,并为防挤压功能的准确激活提供先决条件,针对防挤压功能激活的时机判断不精准问题,采用分段激活法和全程电流保护法提高自动门防挤压功能的精确性和安全性。试验结果表明,所采取的的方法合理、正确且是可行的。
Several new methods are proposed to deal with the key issues of urban rail vehicle door control unit. Aiming at high torque ripples and bad performance due to phase commutation at low speed, PWM_ON modulation is used to guarantee the constant commutating current which can restrains the torque ripples; through combing DSP control technology of brushless DC motor with fuzzy PID control algorithm, double closed loop control of motor is real- ized, which can improve the speed of response and provide a prerequisite for accurate activation of anti-extrusion; for the inaccurate timing of activating anti-extrusion, block activation method and full current protection method are used to improve the accuracy and security of anti-extrusion for automatic door. Testing result shows that these methods are correct and feasible.
出处
《城市轨道交通研究》
北大核心
2016年第3期133-137,共5页
Urban Mass Transit
关键词
城市轨道车辆
智能门控器
关键技术
urban rail vehicle
intelligent door control unit
key technology
