锅炉燃烧控制系统故障诊断观测器的仿真研究  

Simulation: Fault Diagnosis Observer Design for Boiler Combustion Control System

作　　者：吴迪[1] 冯志敏[1] 张刚[1] 周昕[1] 

机构地区：[1]宁波大学海运学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2014年第2期25-29,共5页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(61071198);浙江省科技计划项目(2013C31045);浙江省自然科学基金(LY12F03009);宁波市自然科学基金(2012A610004)

摘　　要：针对目前故障诊断观测器设计难以满足实际工程对多性能条件的技术要求,利用建立线性矩阵不等式方法,引入故障灵敏度指标,并分析多个指标之间的相容性问题,用极值的方法计算确定指标的取值范围,最终提出故障诊断观测器的设计方法.以锅炉燃烧控制系统为例,对恒偏差型故障、脉冲型故障进行计算机系统仿真研究.结果表明,与满足单一稳定性指标的观测器相比,所提出的故障诊断观测器对干扰有较强的抑制作用和较高的故障灵敏度.At present, the observer design does not meet the requirements of multi-performance constraints for real-time complex engineering system. This paper first analyzes the compatibility of multiple indices based on linear matrix inequality method, and calculates the range of performance index using the extreme value theory. Then, a fault diagnosis observer design is presented in detail. Finally, a system simulation is conducted for detecting both actuator constant bias fault and pulse fault in boiler combustion control system. The results show that, compared with the ordinary observer with pole assignment constraint, the proposed fault diagnosis observer has strong robustness to interference and higher sensitivity to the fault.

关 键 词：故障诊断 观测器 线性矩阵不等式 锅炉燃烧控制系统 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]