摘要
针对直线电机的工作原理,采用PID控制算法与频率法对电机的位置进行控制。利用遗传算法对PID控制器的参数进行自适应整定,使直线电机在较短的时间内达到稳定值,并且调节过程中具有较小的超调量。采用频率法校正,将时域性能指标转化为频域特性参数,选用超前网络对系统进行校正。采用Simulink进行仿真,经过遗传算法调整后PID控制器与传统的方法提高了系统的静态性能,而频率法校正后的控制系统在保证精度的前提下大幅提高了系统响应速度,达到系统的设计指标。
A control mode is established in this paper,based on the operating principle of the linear motor in with the position of the motor is controlled by using PID control method and frequency correction. In this model,genetic algorithm is used to adjust the PID parameters automatically. The quadratic performance index is selected as fit function in order to make the motor steady quickly and only need to adjust it slightly in this process. Frequency correction is used as another control method to transfer the time domain performance into the frequency parameters and select the phase- leading network to adjust the system. The system static performance in the different methods is compared under the simulation of Simulink. The static performance of the PID control based on genetic algorithm is superior to the traditional adjustment whilst the frequency correction is used to improve the response speed and ensure the precision of controlling the system.
出处
《机械制造与自动化》
2016年第6期40-43,共4页
Machine Building & Automation
关键词
PID控制
遗传算法
频率校正
静态性能
PID control
genetic algorithm
frequency correction
static performance
