摘要
分析了直流PWM调速系统的特点,针对这个时变的、非线性的系统,在低频、小纹波、小信号假设条件下,利用平均开关模型方法建立了其数学模型。依据其数学模型,应用反馈控制规律设计出相应的调节器,组建了PWM调速闭环自动控制系统,实验结果验证了模型的合理性。
The characters of direct current PWM regulating speed system are analyzed. For the a nonlinear and time-varying dynamic system, under the hypothesis of low-frequency, small-ripple wave and small-signal, the mathematical models are set up with average switching-mode. According to the mathematical models, the regulator is designed with the feedback control law. The closed loop control system is build. The experiment results show the models are rationality.
出处
《电气技术》
2009年第7期37-39,共3页
Electrical Engineering
关键词
直流调速
PWM
建模
direct current regulating speed
PWM
modeling
