基于知识的多变量非线性系统变结构解耦控制

Knowledge-based Variable-Structure Decoupling Control of A Nonlinear Multivariable System

提出了一种基于知识的变结构解耦控制策略，并用于多变量非线性系统的控制，避免了传统解耦控制所必须的建模过程，特别是避免了相应的大量复杂的矩阵运算．阐述了其控制知识库中的一些模块，给出了它们的算法要点．提出的策略已成功地用于一个３×３强耦合系统——三绕组加热标准温度源的恒温控制，得到了温度稳定性和温度均匀性都优于１℃的效果，传统方法用于本系统无法达到．

A knowledge-based variable-structure decoupling control strategy is developed and applied to the control of the nonlinear multivariable system so as to avoid the model-establishing process, especially avoid large amount of complex matrix operations necessary for the conventional decoupling control. Some modules in the knowledge base of this kind of control are described and its algorithmic main points are introduced. Strategies presented in this paper have been successively utilized in the homothermal control of a 3×3 strong coupled system a, three winding heater type standard temperature source, and an effect that the temperature stability and temperature homogeneity are better than 1℃ has been attained, which is impossible for the conventional control method.