(另起页:外文摘要范例;英文摘要和关键词应该是中文摘要和关键词的翻译)
Abstract
(小三号,Times New Roman字体,加粗,居中,上下空一行)。
(正文:Times New Roman字体,小四号,行距为固定值20磅)
In this paper, multivariable predictive control algorithm and its application to the control of the environmental test device are introduced particularly. The temperature and humidity control system of the environmental test device is characterized as long time delay and severe coupling. Therefore, the routine PID control effect is unsatisfactory. In this case, the simulation of the temperature and humidity control of the environmental test device based on multivariable predictive control algorithm is made.
Predictive control algorithm is one of control algorithm based on description of system’s input-output. Its three basic principles are predictive model, rolling optimization and feedback correction. It chooses unit step response as its predictive model, so that the modeling process is simplified. In addition, good control and decoupling effects could be possessed by means of selection suitable parameters.
In this paper, the environmental test device is introduced briefly and the existing problems are showed. Then multivariable predictive control algorithm is presented particularly, including multivariable auto-balance system predictive control algorithm and multivariable auto-unbalance system predictive control algorithm. Next, system modeling process and corresponding system model are proposed. Further, the multivariable predictive control algorithm is applied to the temperature and humidity control system of the environmental test device. Finally, the simulation results are compared.
Results of the simulation show that multivariable predictive control algorithm could be used in those multivariable system like the temperature and humidity control system of the environmental test device and the control result would be more satisfactory than that of the routine PID control.
Keyword(Times New Roman字体,小三号,加粗,居左): Multivariable system, Predictive control, Environmental test device(Times New Roman字体,小四号)