转速闭环直流电动机控制建模与仿真

Modeling and Simulation of Rotary Speed Closed-loop Control of a DC Motor

阐述了转速闭环直流电动机控制系统的数学建模和特性仿真。从工程角度,通过模型简化方法建立控制系统近似模型。由于单闭环直流电动机控制结构简单,且建模方法简捷,故所得模型是一简易而快速的模型,这适合于工程需要。通过特性仿真,将近似模型与精确模型对比分析,结果表明近似模型误差小,直流电动机控制具有很好的动态性能。

Mathematical modeling and performance simulation of the rotary speed closed-loop control system of a DC motor were described. From engineering angle, an approximate model of the control system was established by model simplification. The obtained model is simple and fast due to the simple constitution of the closed-loop control system and the ease modeling method, which is suitable for engineering requirements. Comparison of the approximate model and accurate model analysis was conducted by simulation. The results show that the approximate model error is small and the DC motor control system has good dynamic per-formance.