多变量时滞系统的伴随解耦控制

发布时间：2018-02-28 01:08

本文关键词： 多变量时滞过程伴随矩阵解耦模型简化内模控制(IMC)　出处：《控制工程》2017年05期 　论文类型：期刊论文

【摘要】：化工生产过程中存在着大量的多变量时滞过程,由于模型输出变量间的耦合及时滞因子的影响,对于这类模型的控制往往很困难。首先利用伴随矩阵解耦控制方法对多变量时滞过程的输出进行解耦,该解耦方法不仅可以针对有输入输出时滞的多变量系统,也可以对有状态时滞的多变量系统进行解耦。考虑到解耦后的子系统比较复杂,在利用系统采样输入输出数据的基础上对解耦后的系统进行模型精简,然后利用简化模型设计基于内模原理(IMC)的PID控制器,实现解耦系统对定值信号的跟踪控制。最后通过2个化工过程中的例子进行仿真研究,证明该方法的有效性和优越性。
[Abstract]:There are a large number of multivariable time-delay processes in the chemical production process, because of the coupling between the output variables of the model and the influence of the time-delay factors. It is very difficult to control this kind of model. Firstly, the output of multivariable time-delay process is decoupled by adjoint matrix decoupling control method. This decoupling method can not only be used for multivariable systems with input and output delays, but also for multivariable systems with input and output delays. Considering the complexity of the decoupled subsystem, the decoupling model of the decoupled system is simplified based on the sampled input and output data of the system. Then the simplified model is used to design the PID controller based on the IMC) to realize the tracking control of the decoupling system to the fixed value signal. Finally, the simulation results of two chemical process examples show that the method is effective and superior.
【作者单位】：江南大学轻工过程先进控制教育部重点实验室;
【基金】：国家自然科学基金(61374047)
【分类号】：TP13;TQ018

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