基于多变量内模解耦控制的室内舒适度全自动控制系统

An automatic control system for indoor comfort based on multivariable internal model decoupling control

研究设计一种利用空调对室内舒适度进行全自动控制的系统。设计监视管理主机单元,空调系统和新风系统等模块,实现室内舒适度闭环控制。选取室内温度、相对湿度和CO2浓度为舒适度参数,进行室内舒适度评价并反馈至主机单元作为模式切换判据。针对系统大时滞、大惯性和时变等动态特性以及参数耦合对舒适度控制的严重影响,采用多变量内模控制方法,设计基于V规范型解耦结构的3×3多变量内模解耦控制器(VIMC)。研究滤波器参数λ对控制器性能的影响,调试得到空调不同模式对应的不同λ最优值。对控制系统进行MATLAB仿真,与PID控制对比验证系统全自动闭环性能,解耦控制效果和鲁棒性。经实验验证,控制系统性能良好。

Introduces an automatic system of indoor comfort degree using the air conditioner. Designs modules including monitoring and management unit, air conditioning system and fresh air system to realize the closed loop indoor comfort control.Selects the indoor temperature,relative humidity,and CO2 concentration as comfort parameters, evaluates them and feeds back to the host unit as the mode switching criterion. In view of the system dynamic characteristics such as large time delay, large inertia and time varying, and parameter coupling's serious impact on the comfort control, designs 3×3 variable decoupling internal model decoupling controller(VIMC)based on the V specification decoupling structure, using the method of multivariable internal model control. Researches the effects of filter parameter λ on the performance of the controller, debugging and obtained different lambda optimal value corresponding to the different mode of the air conditioner. Compares the automatic closed-loop performance, efficiency and robustness of the decoupling control of the system to PID control with MATLAB simulation. The experimental verification shows that this control system has good performance.