多变量时滞过程的解耦控制方法研究

摘要

针对工业过程中常见的多变量时滞输入输出系统,在改进的内模控制基础上提出了一种两自由度解耦控制方案,其优点是不仅使得标称系统各路输出响应之间完全解耦,而且能够实现系统给定值响应与负载干扰响应的解耦与在线调节和优化,采用加补偿项方法设计的两控制器矩阵能够保证系统具有较好的标称性能和鲁棒稳定性能.最后,通过仿真实例验证了该控制方案的有效性.%A two-degree-of-freedom control solution, based on modified internal model control, is proposed for muhivariable time delay process which is common in industrial application. Its advantage is that not only the absolute decoupling for the minimal responses of system outputs can be implemented but also the control for set point response and the control for disturbance rejection can be adjusted independently. The two controller ma-trixes using compensating method guarantee the control system nominal performance and robust stability. Final-ly, simulation example demonstrates the validity of the proposed control scheme.