采用多拍脉冲的快速脉冲系统
A QUICK-ACTING SAMPLED-DATA CONTROL SYSTEM
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摘要: 在通常的脉冲控制系统中,当输入信号是阶跃函数时,系统的过渡过程至少在n个采样周期内才能完全结束(n 是控制对象的阶数).文中考虑了采用宽度不等的多拍脉冲代替通常的单拍脉冲以加快系统的过渡过程.在采用多拍脉冲以后,系统的过渡过程可以在少于n个采样周期内,甚至在一个采样周期内完全结束.文中叙述了这种脉冲系统的综合方法,也讨论了系统中有关组成部分——脉冲组成器和校正装置——的构成方案及其参数的计算方法.最后并考虑了由于时滞引起的对系统动态特性有害影响的补偿问题.文中举有例题,对文中各节内容作必要的说明.Abstract: In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals(n is the order of the controlled plant).In this paper multiple-impulses are used,instead of ordinary simple impulses,to speed up the system response.In such sampled data systems the system response to step input can reach its equilibrium state within less than n,even one,sam- pling intervals.Methods of design of such kind of sampled-data systems and their com- ponents are discussed.In the last part of the paper methods of compensating sampled data systems with dead time elements is also considered.
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