MFAC和前馈补偿组合的VAV系统解耦控制仿真  

The Decoupling of VAV Based on the Combination of MFAC and Feedforward Compensation

作　　者：冯增喜[1] 任庆昌[1] 

机构地区：[1]西安建筑科技大学,陕西西安710055

出　　处：《计算机仿真》2014年第9期402-406,共5页Computer Simulation

基　　金：住房和城乡建设部科学技术项目(2012-K1-35);陕西省教育厅自然科学专项基金项目(11JK0914)

摘　　要：在空调机风量优化控制的研究中,变风量(Variable Air Volume,VAV)系统存在多变量、耦合强烈、非线性及带有时延等特点。针对子系统耦合严重的现象,提出了无模型自适应控制(Model Free Adaptive Control,MFAC)和前馈补偿相结合方法,建立了两个空气处理机组成的耦合系统的数学模型,设计了MFAC控制器和前馈补偿解耦网络,对所建立的耦合系统进行了解耦控制。仿真结果表明:相对PID与前馈补偿组合解耦而言,无模型自适应控制配合前馈补偿的方法可以大幅减少调节时间,且超调量为0,具有很好的解耦效果,可以解决变风量系统的耦合问题。Variable Air Volume system （VAV） is character of muhivariable, serious coupling, nonlinear and time delay. In order to decoupling the variable air volume system, the combination method of Model Free Adaptive Control （MFAC） and feedforward compensation control is designed in this paper. The math model of two coupling air handle units is built, and the decoupling net based on the control is realized. The decoupling net is used to decouple two air handle units, and the simulation results show that the proposed combination method has good decoupling performance with 0 overshoot and little settling time, which is batter than the combination method of traditional PID and feedforward compensation control. It can golve the coupling problem of Variable Air Volume system.

关 键 词：变风量 无模型 自适应 解耦 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]