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采用基于模型预测控制策略的多输入多输出(MIMO)控制器对单通道变风量空调系统的控制问题进行了研究。在分析系统工作机理和系统动力学行为的基础上,建立了内部模型的结构,采用实验确定了模型的参数。通过设定参考轨迹、输入输出约束、控制步长、预测步长及加权矩阵,解决了系统的凸二次型优化问题。通过仿真研究和对实际系统的控制,验证了系统的控制效果。
The control problem of single-channel VAV air conditioning system is studied by using multiple input multiple output (MIMO) controller based on model predictive control strategy. Based on the analysis of system working mechanism and system dynamics, the structure of internal model is established, and the parameters of the model are experimentally determined. By setting the reference trajectory, input and output constraints, control steps, prediction steps and weighting matrix, the convex quadratic optimization problem is solved. Through the simulation research and the control of the actual system, the control effect of the system is verified.