摘要
PID控制广泛应用于工业控制过程中。因为DC/DC变换器是强非线性系统,且传统的PID对非线性控制、控制精度以及响应速度等方面存在不足,本文提出了自适应模糊PID控制。现以移相全桥变换器作为控制对象,在先进的动态模型基础上推导出新的控制-输出传递函数。通过Matlab仿真,对传统PID控制和自适应模糊PID控制进行对比,验证了自适应模糊PID控制具有更好的稳态性能和动态性能。最后通过一个从96V升至720V的移相全桥的实验平台,证明了该结论。
PID control is widely used in the process of industrial control. For DC/DC converter is of strong nonlinear, and traditional PID control can not meet the control requirements such as nonlinear control,control accuracy and the speed of response, a fuzzy self-adaptive adjusting of PID controller is presented in the paper. With phase-shift full bridge converter as control object,proving a new duty-to output transfer function based on the enhanced dynamic modeling of the PSFB. Through Matlab simulation, the traditional PID control and adaptive fuzzy PID control is compared to verify that the fuzzy self-adaptive adjusting of PID controller has better steady-state performance and dynamic performance. Lastly, detailed experimental results for a real-life 96V to 720V PSFB industrial application show excellent agreement with them.
出处
《电气技术》
2015年第8期15-18,39,共5页
Electrical Engineering
