多模型自适应预测函数控制及仿真

Multiple-model Adaptive Predictive Functional Control and Simulation

许多工业控制对象存在一定程度的非线性环节,经典控制方法很难满足控制要求。多模型预测函数控制法结合了多模型控制法和预测函数控制法的优点,在一些复杂的工业控制系统中获得了成功的应用。结合模型匹配计算公式,提出了基于参数在线辨识的多模型切换方法。它不依赖于典型工况下系统参数的模型,且能根据实际系统的运行情况及时地切换模型参数。将这种控制方法应用到蒸馏塔温度控制系统中去,研究表明,这种控制方法有较强的自适应能力,具有一定的实用价值。

Many industrial control objects have certain nonlinear parts. Conventional method can＇t satisfy the control requirements. Multi-model predictive functional control method which combines the virtues of multi-model and predictive functional control obtains successful application on some complicated industrial control systems. Combined model matching formula, a multi-model switching method based on online identification was put forward. It doesn＇t depend on the model of typical circumstance, and switches model parameter according to actual system. The method which is applied to distill column control system indicates that it has better adaptive ability and practical value.