摘要
提出了一种基于神经网络和逐次模糊推理理论,构建了逐次的模糊神经网络,对齿轮装置故障进行逐次诊断。该方法能自动精确地识别齿轮装置故障。提出了5个时域中的无量纲特征参量,并应用可能性理论,把由实测数据求得的特征参量的概率密度函数转换为可能性分布函数,可表征特征参量与设备状态间的模糊关系。逐次模糊神经网络能处理特征参量与故障状态的模糊关系,实现对故障的自动诊断。齿轮诊断实例验证了该方法的有效性及可行性。
This paper proposed a new method called a "sequential fuzzy neural network" to diagnose gear equipment failures automatically and precisely. The symptom parameters in time domain, by which each gear equipment failure can be detected sequentially, were selected according to values calculated from the signals measured in each gear condition. To express the relationship between the gear condition and the symptom parameters, the probability density functions were translated to possibility distribution functions by possibility theory. The diagnostic process can be carried out automatically by a neural network combined with sequential fuzzy inference. Examples of practical diagnosis are shown to verify the efficiency of this method.
出处
《重庆大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2008年第11期1231-1236,共6页
Journal of Chongqing University
基金
重庆市科技攻关计划资助项目(CSTC2007AA7003)
关键词
齿轮装置
故障诊断
逐次模糊推理
可能性分布函数
gear equipment
failure diagnosis
fuzzy inference
possibility distribution function