基于小波分析的某型装备发动机分布式在线检测系统设计

摘要

针对现代战车大型发动机强干扰下的在线故障检测需求,设计了一种基于小波分析的某型发动机分布式在线检测系统;整体设计基于分布式设计思想,在某型发动机合适部位设置检测节点,通过CAN总线传递数据到显控中心;利用CAN总线进行数据传送,提高了测量与控制的精确度,减少了传送误差,增强了故障分析的准确度;显控中心综合运用了小波变换和模式识别技术进行故障诊断,具有快速故障定位能力和拓扑适应能力;应用表明,该系统能够较好地应用于某型发动机的在线监控,使用方便,故障诊断快速有效,解决了发动机在线预警和故障诊断的问题.%Aimed at the requirements of the fault detection system for the modern large engine of tank,which worked under strong interference conditions,one online fault detection system based on wavelet analysis was designed.The detection nodes were set in a certain type of the engine,the information was transmitted to the center through the CAN bus.Using CAN bus to transmit information could improve the precision of the measurement and control;the wavelet transform and the pattern recognition technology were used for the fault analysis in the control center,by which the people could locate the fault quickly.The application showed that the system would be better applicable to modern digital chariots of maintenance support,and which was used easily,the fault could be detected quickly and efficiently.