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非线性系统存在过程扰动时故障可分离研究
引用本文:郭其一,黄世泽.非线性系统存在过程扰动时故障可分离研究[J].同济大学学报(自然科学版),2017,45(8):1183-1190.
作者姓名:郭其一  黄世泽
作者单位:同济大学电子与信息工程学院,同济大学
基金项目:国家十三五重点研发计划(2016YFB1200402)
摘    要:通过详细推导,论证了故障可分离是客观存在的,并就存在过程扰动的连续线性系统和连续非线性系统给出了形式上一致的系统故障可分离的条件.还结合552732QT型电力机车、韶8电力机车、SS4G-0446机车的轮对轴承故障进行了故障分离的具体实践.

关 键 词:系统  状态故障  故障诊断  故障分离
收稿时间:2015/11/24 0:00:00
修稿时间:2017/6/2 0:00:00

Study on the Condition of Separable Fault of Serial Nonlinear System Under the Process Noise
GUO Qiyi and HUANG Shize.Study on the Condition of Separable Fault of Serial Nonlinear System Under the Process Noise[J].Journal of Tongji University(Natural Science),2017,45(8):1183-1190.
Authors:GUO Qiyi and HUANG Shize
Institution:College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China and Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
Abstract:As one of the most important step of fault diagnosis, fault-separation not only is an effective precondiction of fault diagnosis, but also can confirm where and why the fault takes place, so the fault-separation is very important. Through the detailed derivation, this paper proved that the separability and the condition of the fault-separation about serial linear system and serial nonlinear system when exist the process noise. Also, the form unity conclusion is given. This paper also combines the wheelsbearing fault of 552732QT electric locomotive, Shaoguan 8 electric locomotive, the locomotive SS4G-0446 of the concrete practice of the fault isolation.
Keywords:system  state-fault  fault  diagnosis  fault-separation
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