摘要
针对直升机时间域瞬变电磁(helicopter transient electromagnetic,HTEM)发射系统对电流响应快速跟踪的技术需求,提出一种基于Boost拓扑电路的峰值电流数字预测控制算法.通过采样当前开关周期的输入电压、输出电压和电感电流,预测下一个开关周期结束时刻的电感电流,进而推导出占空比,使电感电流在一个开关响应周期实现对参考值的跟踪,提高电流的瞬态响应速度,并通过伯德图对闭环系统的稳定性和快速性进行分析.控制算法不仅简单,而且易于在数字信号处理器(digital signal processors,DSP)上实现.最后,通过软件仿真和实验对提出的控制算法进行了验证.
Aiming at the technical requirements of fast tracking of the current response in a helicopter transient electromagnetic(HTEM)system,a peak current digital predictive control algorithm for a Boost topology circuit was proposed.The inductor current at the end of next switching period was predicted by the algorithm by sampling voltages including input and output,and inductor current of the current switching period,and then the duty ratio was deduced,so that the reference within one switching period was tracked by the inductor current.The transient response speed of the inductor current was improved.The stability and rapidity of the closed-loop system were analyzed by Bode diagram.Additionally,the control algorithm is not only simple,but also easy to be implemented on DSP of digital signal processors.Finally,the proposed control algorithm was verified by using simulation software and experiments.
作者
张雨
张一鸣
王旭红
ZHANG Yu;ZHANG Yiming;WANG Xuhong(Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China)
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2021年第1期24-31,共8页
Journal of Beijing University of Technology
基金
北京市科技计划资助项目(Z181100005718001)。
