Desired-Dynamics-Based Design of Control Strategy for Multivariable System with Time Delays
Multiple-input-multiple-output (MIMO) processes with time delays commonly appear in chemical and industrial practice. For MIMO processes, a PID decoupling controller is devised based on unity feedback closed-loop control structure and combined with the characteristics of strong robustness of the Desired Dynamic Equation (DDE) method for two-degreeof-freedom (2-DOF) PID controllers. The design of the PID controller is achieved through setting a static decoupling controller on the input of the controlled process. And for additive and multiplicative uncertainty disturbance usually encountered in practice, the sufficient and necessary condition of guaranteeing robust stability of the control system is analyzed and a determination method is provided based on the spectral radius criterion. This controller can not only achieve a significant decoupling among the nominal responses of system outputs, but also realize the online tuning of adjustable parameter. Comparing with the deficiency of numerical calculation method, this design is simple and widely applicable. Finally, some simulation examples are supplied to demonstrate the superiority of the proposed method.
multiple-input-multiple-output processes time delays decoupling DDE robust stability
Zengrong Hu Donghai Li Xu Jiang Jing Wang
Metallurgical Engineering Research institute University of Science & Technology Beijing, China Schoo State Key Lab of Power Systems, Dept of Thermal Engineering, Tsinghua University Beijing, China China National Construction Machinery Quality Supervision Testing Center Beijing, China Metallurgical Engineering Research institute University of Science & Technology Beijing, China
国际会议
太原
英文
191-196
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）