摘要
PI调节器用于伺服系统闭环控制时,为保证伺服系统有快速响应,超调是不可避免的。本文研究微分控制(微分调节,微分反馈)对抑制系统响应超调的作用。通过求解微分方程的实时解,分析微分控制对闭环系统阻尼比及闭环零、极点的影响。分析表明,对实际的永磁同步伺服系统引入微分反馈控制,可使系统既有较快的响应速度,又明显地抑制伺服系统响应超调,从而使系统具有优异的响应性能。仿真和实验均证实了微分反馈对伺服系统控制的有效性。
To ensure fast response of servo system, overshoot is often unavoidable when proportional-integral （PI） regulator is adopted in the closed-loop control of servo system. The analysis of overshoot-resisting techniques of differtial control （differtial adjustment and diffential feedback） was focused on in this paper. By solving the diffential equation, the influence of differential feedback on damp coefficients of the closed-loop, as well as its closed-loop zeros and poles, was analyzed. It suggests that, the response of the practical PMSM servo system can be fast without overshoot if differential feedback was adopted, thus resulted in excellent response performance. Both the numerical simulation and experiment approved the validity of the method proposed.
出处
《电工技术学报》
EI
CSCD
北大核心
2005年第9期92-97,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(50337030)
江苏省自然科学基金资助项目(04KJB470150)
关键词
永磁
伺服
微分控制
超调
Permanent magnet, servo, differential control, overshoot
