基于数字PI调速算法的直流力矩电机控制

Control of Direct Current Torque Motor Based on Digital PI Speed Regulation Algorithmic

为了适应某控制系统快速、灵活性的要求,提高速度稳定性,采用专门的运动控制芯片TMS320LF2407A、7200plus/r的编码器以及直流力矩电机J75LYX011,设计了一个将数字PI调速算法应用于直流力矩电机稳速控制的系统,根据实测值与给定值之间的偏差不断调整输出值,使直流电机迅速达到设定的速度或位置值。经过对数字PI调速算法参数的整定,使伺服系统可以达到无超调输出,且调节时间短,稳态误差小于万分之四的要求。运用Matlab软件对整个调速系统进行了仿真,结果证明了该调速系统的时域和频域性能指标均符合设计要求。

In order to improve the stability of speed and meet the demand of high speed and flexibility of the control system, a control system that applies the digital PI speed regulation is designed for direct current torque motor. The structure of system is mostly made of the special motion control chip TM320LF2407A, photoelectricity encoder of 7200plus/r and direct current torque motor of J75LYX011. The direct current motor achieves the given value of speed or position by continuously revising the value of exports based on the deviation between the value of actual measurement and the given value. By setting the parameter of PI speed regulation algorithmic, the control system meets the requirement of no-overshoot and short accommodation time. And its steady state error is less than 0.4%o. The speed control system is simulated by the software of MATLAB. And the result shows that the performance index of time domain and frequency domain suffice the design specification of the speed control system.