Smith预估器在大迟延系统中的应用  

Application of Smith Predictor in Large Time-delay System

作　　者：张全庄[1] 兰羽[1] 

机构地区：[1]陕西工业职业技术学院电气工程系,陕西咸阳712000

出　　处：《机床与液压》2006年第4期170-171,153,共3页Machine Tool & Hydraulics

摘　　要：介绍了在大迟延系统中,利用Sm ith(史密斯)预估器模型的补偿特性,并将其加入到被控系统的反馈回路来补偿过程的动态特性,以克服控制系统在纯PID控制、微分先行控制及中间反馈控制受定值扰动下所存在的超调量较大且响应速度很慢的缺点。By utilizing the compensation characteristic of Smith predictor model, the dynamic characteristic of process was compensated by applying Smith predictor in the feedback loop of controlled system in large time-delay system, so it overcome the disadvantage of large overshooting and lower speed of response disturbed by the settled value when the control system is in unmixed PID control, differential advanced control, the intermediate feedback control.

关 键 词：SMITH预估器 大迟延系统 鲁棒性 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置] TP391[自动化与计算机技术—控制科学与工程]