DC/DC变换器数字控制方法研究

传统PID控制方案在变换器的数字控制中仍发挥重要的作用,但先进的控制算法与传统控制相结合将是日后数字控制的主流。以DC/DC变换器为控制对象,在常规PID控制的基础上分析了改进型PID控制方法,如积分分离PID、不完全微分PID。另外针对参数自适应PID控制方法进行了研究,分别比较了不同的控制方法在相同和不同条件下的控制性能。实验结果证明,基于数字控制的先进控制方法使得变换器具有更好的动态性能。

Study on the Digital Control Methods for DC/DC Converter

Traditional PID control strategy still plays an important role in the application of digital control of converter,but the combination of advanced control arithmetic with traditional control will attract more and more attention in the future.Based on conventional PID control method used in the DC/DC converter,the improved PID control strategies as integral abruption PID and incompletion coefficient PID are analyzed.Furthermore the research is carried out for parameter adaptive PID and the performance of system is studied controlled by different methods.The experimental results prove that the advanced control methods based on digital control make the converter has a better dynamic performance.