ZHU Hong-lu, LIU Ji-zhen, CHANG Tai-hua, et al. RECONSTRUCTION OF REHEATED STEAM TEMPERATURE SIGNALS BASED ON LMS ALGORITHM[J]. Thermal power generation, 2009, 38(9): 40-43.
ZHU Hong-lu, LIU Ji-zhen, CHANG Tai-hua, et al. RECONSTRUCTION OF REHEATED STEAM TEMPERATURE SIGNALS BASED ON LMS ALGORITHM[J]. Thermal power generation, 2009, 38(9): 40-43.DOI:
基于LMS算法的再热蒸汽温度信号重构
摘要
电站锅炉再热器对象具有大迟延、大惯性和参数非线性的特性
因此在噪声背景下难以获得较为准确的数学模型。在分析再热蒸汽温度过程机理的基础上
构建了再热蒸汽温度的热量扰动信号
提出了基于最小均方(LMS)算法的再热蒸汽温度信号重构方法
进而将LMS算法滤波得到的有限脉冲响应(FIR)模型逼近再热器惰性区域燃烧扰动
可以有效地抑制干扰
使原始信号得到较为准确的恢复。
Abstract
The object
reheater of utility boilers
has properties of large time delay
big inertia
and nonlinearity of parameters
so it is very difficult to get an accurate mathematical model under the background of noise.On the basis of analysing the propcess mechanism of reheated steam temperature
a signal of heat disturbance for reheated steam has been constructed
and a signal reconstruction method of reheated steam temperature based on LMS algorithm being proposed.Furthermore
a finity impulse(FIR) model has been obtained from LMS filtering
approaching to the combustion disturbance in the inertia part of the reheater
so the original signal can more accurately be resumed.