摘要
锅炉蒸汽温度受控对象的全程仿真数学模型,是控制策略研究的依据以及控制系统设计的仿真试验平台,探索一种实用有效的建模方法,可由一个数学模型统一描述过热器温度受控对象的动态特性,避免了以往采用多个传递函数分段线性建模方式所带来的一些技术问题,模型中的参数是工程值。在原来的各分段点处,由仿真实验知,新模型与原模型的出口蒸汽温度偏差在1℃左右,最终到达相同的稳态值,充分说明了本模型的有效性。同时给出了全程仿真图形,受控对象的全程运行特性得以充分展现,可得到不同工况点的运行情况。建模方法简洁,方便了对象的过程研究,对象的可知性增强,模型和对象的研究工作得到了拓展。
The full scope mathematic model of controlled object as steam temperature provides a rule for control strategy as well as designed a platform for simulation testing.To explore one practicably model method which can use a mathematic model to describe controlled object dynamic characteristic of steam temperature,the model avoides some technique problems which brings by linear subsection model as before to use many transfer function to describe model,the parameters in model is engineering value.In the original sub-section point,the model can be testified effective known from simulation test: the output steam temperature bias of new model and original model is no more than one,and they all reach to the same static point.The whole process simulation test is present,it is shown the full scope operation characteristic of controlled object,and the operation condition in different point can be gotten.Modelling method is simple and convenient,the process of research can be advantaged and the knowability of model be enhanced,meanwhile,the research work has been expanded.
出处
《控制工程》
CSCD
北大核心
2009年第S3期142-145,共4页
Control Engineering of China
关键词
数学模型
非线性
过热器
动态特性
传递函数
系统辨识
mathematical model
nonlinear
super-heater
dynamic characteristic
transfer function
system identification
