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建立了主动磁悬浮系统的数学模型,提出了数模混合式PID控制器,研究了主动磁悬浮系统在数模混合式PID控制器下的刚度和阻尼特性,并以几组不同的电气参数作为输入进行PID控制器参数的计算。通过实验,得到了几组能够使磁悬浮支撑系统具有良好的动态特性的PID控制参数,同时得出了转子转速与刚度阻尼特性的关系,为提高主动磁悬浮电主轴稳定域调节参数提供了参考依据。
The mathematical model of active magnetic levitation system is established and the hybrid PID controller is proposed. The stiffness and damping characteristics of the active magnetic levitation system under the digital-analog hybrid PID controller are studied. Several sets of different electrical parameters are taken as input PID controller parameter calculation. Through experiments, several sets of PID control parameters that can make the magnetic suspension support system have good dynamic characteristics are obtained, and the relationship between rotor speed and stiffness damping characteristics is obtained. The results provide reference for improving the regulation parameters of the active magnetic suspension spindle.