关键词: 变风量系统（VAV）, 模型预测控制（MPC）, 约束限制, 加权矩阵

Abstract: A single-duct VAV system can be controlled successfully by a Multi-Input-Multi-Output（MIMO） controller with a Model Predictive Control（MPC） strategy.However，an obvious drawback of this way is that it is computationally intensive，when the moderate number of inputs is large.In this paper，a internal model has been built by analyzing the working mechanism and the dynamics of the system，and the whole system is decomposed into four subsystem based on distributed predictive control strategy.MPC solves a constrained convex quadratic plant-wide and Nash optimization by defining weighting factors and constraint limits.Simulation results demonstrate the validity of the approach proposed.

Key words: VAV system, distributed predictive control, constraint limit, weighting matrices