Two-Degrees-of-Freedom Decoupling Control for Stable Multivariable Processes  

作　　者：陈培颖 孙敬 张卫东 

机构地区：[1]Department of Automation, Shanghai Jiaotong University [2]DaimlerChrysler (China) Ltd.

出　　处：《Journal of Donghua University(English Edition)》2008年第2期135-139,共5页东华大学学报（英文版）

基　　金：NSFC (No.60704021,60474031) , NCET (No.04-0383);Australia-China Special Fund for Scientific & Technological Cooperation

摘　　要：This paper proposes a decoupling control scheme with two-degrees-of-freedom (2DOF) control structure. In the proposed scheme, two multivariable controllers are designed based on Internal Model Control (IMC) theory for setpoint tracking and disturbance rejection independently. An analytical approximation method is utilized to reduce the order of the controllers. By adjusting the corresponding controller parameter, the setpoint tracking and disturbance rejection of each control loop can be tuned independently. In the presence of multiplicative input uncertainty, a calculation method is also proposed to derive the low bounds of the control parameters in order to guarantee the robust stability of the system. Simulations are illustrated to demonstrate the validity of the proposed control scheme.This paper proposes a decoupling control scheme with two-degrees-of-freedom （2DOF） control structure. In the proposed scheme, two multivariable controllers are designed based on Internal Model Control （IMC） theory for setpoint tracking and disturbance rejection independently. An analytical approximation method is utilized to reduce the order of the controllers. By adjusting the corresponding controller parameter, the setpoint tracking and disturbance rejection of each control loop can be tuned independently. In the presence of multiplicative input uncertainty, a calculation method is also proposed to derive the low bounds of the control parameters in order to guarantee the robust stability of the system. Simulations are illustrated to demonstrate the validity of the proposed control scheme.

关 键 词：multivariable processes 2DOF IMC ANALYTICAL robust stability 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]