摘要
用新的思路设计了一个数字比例积分微分（proportional-integral-differential,PID）控制器.通过在传统数字PID算法上增加一个迭代回路,加快了瞬态响应速度.将该控制器应用于一个降压型开关电源系统中,经实验证明,当负载电流从2-10 A大范围变化时,输出电压的稳定时间从480μs缩短为150μs,下冲从40 mV减少为20 mV.功率管的开关频率为1 MHz.
A new design for digital Proportional-Integral-Differential （PID） controller is proposed. One iterative loop is added to the traditional digital PID arithmetic resulting in increase of transient response speed. This controller is applied in a buck switching power supply system. Experiment result shows that when output load current varies from 2 to 10 A, the stabilization time of output voltage decreases from 480 to 150μs and the undershoot voltage spikes also decrease from 40 to 20 mV. Switching frequency of the power transistors is 1 MHz.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2008年第1期40-44,49,共6页
Journal of Fudan University：Natural Science
基金
国家自然科学基金资助项目(60676013)
上海市科委SDC资助项目(047062003)
