一种时滞系统的控制策略及仿真研究  

Control Strategy and Simulation Research of a Time-Delay Systems

作　　者：蔡景章 张世峰[2] 

机构地区：[1]江西省景德镇市焦化工业集团有限责任公司,江西景德镇市333000 [2]安徽工业大学电气信息学院,安徽马鞍山市243002

出　　处：《自动化与仪器仪表》2013年第1期1-3,共3页Automation & Instrumentation

基　　金：安徽省教育厅自然科学研究项目(KJ2008B104)

摘　　要：针对工业生产过程中一类具有大滞后特性的被控对象,采用时滞时间削弱器的预测输出反馈方法,将大时滞过程转化为弱时滞过程,并利用改进的削弱器参数的优化方法进一步提高输出反馈精度,用以简化主控制器--PI型广义预测控制器(PIGPC)的结构和提高其算法的实时性。仿真结果表明,所设计的控制系统提高了系统响应速度性和稳态精度且控制系统鲁棒性和自适应性也得到较明显的改善。控制算法简洁参数易调,可降低工程实现难度,对解决工业生产过程的时延问题和提高生产过程的控制品质具有良好的效果。For a class of industrial processes with large time delay, makes large time delay process into a weak time delay process by the Delay time decreasing predict output feedback method, and improved weakening parameter optimization methods to further improve the accuracy of output feedback. With the delay time weaken device to simplify the structure of the main con- troller PI-GPC （generalized predictive controller） and improve real-time of the algorithm in the way of identification. These mea- sures not only enhance the regularity of the input control signal but also improve the efficiency and accuracy of the response. Due to the simple algorithm and easily adjustable parameters, the control system reduces the difficulty of the reality of the proj- ect and has the significant theoretical and practical significance of solving the delay problems in the production process and im- prove the quality of the control by simulation.

关 键 词：时滞 广义预测控制 模型辨识 优化 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]