摘要
针对火电厂过热汽温具有大迟延、时变、非线性等特性,在常规的串级PID控制基础上,提出基于多模型的切换控制策略,有效避免单一控制方式不能适应负荷变化的要求,主调节器参数根据内模控制的原理进行整定。仿真结果表明,多模型切换的过热汽温控制系统能够获得满意的动态响应。
Superheated steam temperature control system in thermal power plant features long time delay,time-varying and nonlinear.On the basis of conventional cascade PID control,the control scheme of multi-model switching which can adapt effectively conditions varying designed.Simulink results show that this control strategy has better dynamic characteristic than single model system.
出处
《电力科学与工程》
2010年第7期42-45,共4页
Electric Power Science and Engineering
关键词
过热汽温
多模型
串级控制
内模控制
superheated steam temperature
multi-model
cascade control
internal model control
