针对热轧带钢连轧过程中，张力干扰引起厚度控制精度降低的情况，在综合分析厚控系统与活套系统之间相互作用基础上，建立了多变量、强耦合厚度活套非线性动态模型，提出将逆系统理论应用于该模型的解耦控制策略。在证明AGCLP系统可逆的条件下，建立了该模型的逆系统，将原非线性系统解耦成为AGCLP复合伪线性系统，采用线性控制理论设计解耦控制器，实现了AGCLP非线性系统解耦控制。仿真结果验证了所建模型的合理性和控制方案的可行性。
Aiming at improving the gauge control affected by the tension disturbance in hot strip finishing mills, a multivariable strong coupled AGCLP nonlinear model was established by analyzing the interaction of the gauge control system and the looper system to present a decoupling control strategy of inverse system theory. Demonstrating the inversion of AGCLP system and building the inverse system, the nonlinear system could be decoupled to a pseudo linear system, then, a decoupling controller was designed by linear control theory to complete the decoupling of multivariable nonlinear AGCLP system. The simulation results showed the validity of the model and feasibility of inverse control strategies.
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