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带Smith预估器的模糊PID组织温度控制系统
引用本文:任立红,丁永生,邵世煌. 带Smith预估器的模糊PID组织温度控制系统[J]. 东华大学学报(自然科学版), 1999, 0(3)
作者姓名:任立红  丁永生  邵世煌
作者单位:中国纺织大学信息科学与技术学院 上海200051
基金项目:国家自然科学基金资助项目
摘    要:针对激光热疗法中组织温度模型的纯滞后和大惯性,提出一种新颖的带Smith预估器的模糊PID控制系统.模糊PID控制器是由一个简单的模糊PI控制器和一个简单的模糊PD控制器并行结合而成.模糊PID控制器的增益通过解析推导与线性PID控制器的增益相联系.设计好的线性PID控制器的增益可用于在线设计模糊PID控制器.计算机仿真结果表明模糊控制系统在组织温度控制中比对应的线性PID控制系统鲁棒.

关 键 词:模糊控制  Smith预估器  解析分析  PID控制  激光热疗法

Fuzzy PID Tissue Temperature Control System with Smith Predictor
Ren Lihong,Ding Yongsheng,Shao Shihuang. Fuzzy PID Tissue Temperature Control System with Smith Predictor[J]. Journal of Donghua University, 1999, 0(3)
Authors:Ren Lihong  Ding Yongsheng  Shao Shihuang
Abstract:A novel fuzzy PID control system with Smith predictor is presented to solve the problems in control of the laser - tissue temperature model with pure time - delay and large inertia in laser hyperthermia. The fuzzy FID controller is constructed by a parallel combination of a simple fuzzy PI controller and a simple fuzzy PD controller. The gains of the fuzzy Pfl) controller are linked, via analytical derivation, to those of the linear PID controller. As such, the fuzzy controller can be designed on line by using the gains of the tuned linear PID controller. The computer simulation results indicate that the fuzzy PID control system is more robust than the comparable linear PID control system in control of the tissue temperature.
Keywords:fuzzy control   Smith predictor   analytical analysis   PID control   laser hyperthermia
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