摘要
常用的过热汽温调节系统是基于常规P ID的串级控制系统,但是对于大惯性和大延迟的热工对象,常规P ID控制往往不能取得令人满意的效果,分析表明,工况参数对汽温被控对象有较大的影响。针对过热汽温的这个特点,采用了状态反馈的方法。在线性工作区域,根据状态反馈配置对象极点分布,可以有效地解决系统在时间上的延迟和参数的不确定性。在此,也对状态反馈控制原理和全维状态观测器的设计原则进行了介绍。
Superheated steam temperature control system based on conventional PID serial controller is applied in many power plants, but this system can＇t get good transient response in large time-delay and inertial object. Experiment and analysis of the dynamic characteristics of the superheated steam temperature show that the steam temperature controlled object can be influenced much by the operating parameters. To tackle this problem,the scheme of state feedback is designed in this paper,in the region of linear, the paper designs the pole distribution of the system based on state feedback. The simulation of the superheated steam temperature control system shows the state feedback can effectively solves such problems as uncertain and time-delay, and the method can also perform well under different steam temperature burden. This paper also makes some introduction of the design of state feedback and the muhidimensional state observer.
出处
《机械工程与自动化》
2009年第1期138-141,共4页
Mechanical Engineering & Automation
关键词
过热蒸汽
常规PID控制
状态反馈
全维状态观测器
superheated steam
conventional PID control
state feedback
multidimensional state observer
