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给出的基于模型的多变量协调控制技术将被控变量的动态控制问题与操作变量的静态优化问题有机地结合起来.对于操作变量多于被控变量的“胖”系统,本控制技术在保证对关键变量实施定点控制的同时,综合考虑操作变量的控制速度、操作成本等经济因素,尽可能将一些操作变量协调至理想操作区内,达到优化(节能、降耗)的目的.对于操作变量少于被控变量的“瘦”系统,则据被控变量的重要程度对其施加不同的控制.给出了控制器的唯一解条件、稳态无差和稳定性性质.针对催化裂化主分馏塔给出的仿真结果说明本协调控制有良好的控制性能,适合生产过程的需要.
The proposed model-based multivariable coordinated control technology organically combines the dynamic control of controlled variables with the static optimization of operational variables.For the “fat” system with more manipulated variables than controlled variables, While implementing the fixed-point control on key variables, we should consider the economic factors such as the control speed of operation variables and operating costs, and coordinate some operating variables into the ideal operation area as far as possible so as to optimize (save energy and reduce consumption) Which is less than the “lean” system of the controlled variables, different control of the controlled variable is given according to the degree of importance of the controlled variable. The unique solution condition of the controller is given, The simulation results given by the tower show that the coordinated control has good control performance and is suitable for the production process.