【作者】 郭华；

【导师】 任庆昌；

【作者基本信息】 西安建筑科技大学 ， 控制理论与控制工程， 2004， 硕士

【摘要】 从节能和提高室内环境质量的角度来看，暖通空调(heating ventilating & air conditioning,HVAC)自控系统是楼宇自动化中最重要的系统。因此采用有效的空气调节方式对智能建筑的能量管理控制(energy management control，EMC)具有重要意义。目前，变风量(variable air volume,VAV)空调系统以其巨大的节能潜力逐渐成为国内外空调系统的主流。但是，变风量空调系统具有多变量、强耦合、非线性、时变的特点，因此它的设计、运行和管理都比定风量(constant air volume,CAV)系统难度大。这也是限制VAV系统更广泛应用的一个重要原因。 对于各变量之间耦合严重的多变量系统，如果单独以各回路建立模型设计控制器，运行时可能会出现不稳定、强耦合等问题。针对这种情况，本论文以变风量空调系统的空气传送部分作为研究对象，提出基于极点配置方法的控制方案。首先利用多维逆M序列作为激励输入信号，用实验法建立出空气传送部分的多变量离散状态空间模型。然后在模型的基础上对系统的稳定性、能控能观性进行分析，用极点配置方法设计了控制器。用Matlab软件仿真，仿真的结果令人满意，证明了极点配置法对VAV控制系统的设计是一种有效的控制方法。同时，论文还给出了以Visual Basic工具开发的数据采集和控制系统应用软件。该软件操作界面良好，通过VB—DDE—METASYS的模式与Metasys系统软件实现了数据交换。更多还原

【Abstract】 Of all the Building Automation Systems (BAS), heating, ventilating and air-conditioning (HVAC) systems ate most important from the viewpoint of saving energy and improving the quality of the indoor environment. Therefore, adopting efficient control strategies lor air-conditioning plays a vital role in developing improved energy management control (EMC) systems for intelligent buildings (IB). Nowadays, VAV air-conditioning system has gradually become mostpopular in China and abroad because of its signifcant energy saving. However, since VAV system is multivariable,strongty counted, nonlinear and time variant, its design, performance and management are more difficult than CAV system’s. It’s an important reason that Iimits the VAV system for agreater use.As modeling and designing its controller for each loop whose interaction is significant, the stablility of the system must be considered According to this condition. the paper takes the air transmission unit as the object for studying And has concluded a control plan by pole-placement. Firstly, the paper models the multivariable discrete state-space model of the air transmission unit by the lab method, using multi-dimensional inverse M series as input stimulus signal. Secondly, the paper analyses stability, control-ability and observe-ability of the model, designs the controller based on pole-placement and simulates using MATLAB software.Simulation of the try are pleased. And they have proved the plan’s validity. Also,the paper has provided a program for the system’s data logging and control. It is designed by Visual Basic. The program exchanges data with the system of Metasys in the mode of VB-DDE-METASYS.And it has fine operating interface.更多还原