过热汽温多内模控制

针对火电厂过热汽温被控对象具有大迟延、大惯性的特点，且对象特性随负荷变化较大等因素，很难实现稳定和高性能的控制。针对这一特点，提出了基于多模型的内模控制策略，通过在不同工况辩识得到局部模型，根据加权因子计算出全局多模型，设计出相应的内模控制器，根据运行工况选择相应的控制器，从而实现全工况运行的自适应控制。仿真结果表明，该控制策略比常规的单内模控制在更大范围具有较好的控制品质。

Multiple internal model control of superheated steam temperature of power plant

According to the performance of superheated steam temperature,Multiple internal model control(MIMC) design strategy was developed,the localization models are obtained by the weighted-sum,and the general multiple models are calculated according to the weighter factor,their corresponding internal controllers are designed.By choosing an appropriate controller according to the operating conditions,the self-adaptive control of the total operating conditions is realized.The simulation results show that the method is effective.