According to wavelet neural network s part analytical ability and fusion characteristic and analysis of uncertainty fault with D-S evidence theory ,this paper introduces D-S evidence theory and wavelet neural network to diagnose the faults of engine, which will effectively enhance accuracy of engine fault diagnosis.
将小波神经网络技术和D-S证据理论引入到发动机故障诊断中,利用小波神经网络良好的局部分析能力和融合特性,以及D-S证据理论对于不确定性故障的分析,提高了发动机故障诊断的精确性。
The existing integrated engine fault diagnosis technol-ogy relies on sophisticated sensory system and expert knowledge and is not feasibleto be used in vehicle on-board applications.
该法在实测的80组Geely发动机排气压力波数据上检验时,发动机工况监测准确率达到了98%;(4)引入动态时间弯曲距离法进行发动机故障诊断。
Motor is a complex power system, whcih results in the complexity and uncertainty in motor fault diagnosis.
汽车发动机是一个复杂的动力系统,其设备之间的复杂性导致汽车发动机故障诊断的复杂性和不确定性。
In motor fault diagnosis fields, because of the complexity of the equipment and the uncertain factor of fault causation, the most important problem of solving motor fault diagnosis is to solve the uncertain problem.
在汽车发动机故障诊断领域,由于设备内部的复杂性和导致故障的不确定因素,使得解决不确定性问题成为目前发动机故障诊断的首要问题;文章提出了一种用于解决不确定性问题的贝叶斯网络模型,该模型的网络结构学习采用了基于簇的搜索算法;为了获得更高准确率的故障诊断结果,模型加入了对当前信息集的采用,进行结构和参数的在线学习,改进了网络结构,网络通过概率传播算法,推理出产生故障的原因节点;在实例中表明,该模型能准确有效地解决发动机故障诊断中存在的不确定性问题,并与专家系统故障诊断模型做出比较,验证了基于该算法的贝叶斯网络模型在信息不确定性条件下能够提高诊断的准确率。
On board self-tuning model for aero-engine fault diagnostics;
航空发动机故障诊断的机载自适应模型
Development of Expert System for Fault Diagnosis of Electrical Fuel Injection Engine;
电喷发动机故障诊断专家系统的研制
Study on Diagnosis Expert System of Electric Controlled Engine;
电控发动机故障诊断专家系统的研究
Fault Diagnosis of Engines Based on Grey Correlative Analysis;
基于灰关联法发动机故障诊断的研究
Application of the Fractal Theory on Diagnostic Method to Engine Faults;
分形理论在发动机故障诊断中的应用
Fault Diagnosis of Engine Based on Transient Speed
基于瞬时转速的发动机故障诊断研究
Application of Radial Basis Function Network in the Fault Diagnosis of Engine
RBF网络在发动机故障诊断中的应用
Research and Apply of Aero-engine Fault Diagnose Based on Artificial Neutral Network;
ANN在飞机发动机故障诊断中的应用研究
Applying the Artificial Neural Network to the Failure-diagnosis of Aero Engines;
应用神经网络技术的飞机发动机故障诊断研究
Fault Diagnosis Expert System for One Type Aero-engine in Our Army;
我军某型飞机发动机故障诊断专家系统
Study of the Intelligent Arithmetic on the Fault Diagnosis of Airplane Engine
基于飞机发动机故障诊断的智能算法研究
Study on Application of Support Vector Machine in Engine Fault Diagnosis
支持向量机在发动机故障诊断中的应用研究
Research of Diagnosis Method to Nocode Breakdown in Idling Engine
发动机怠速无故障码故障的诊断方法
Aero Starter Generator Fault-diagnosis Based on Volterra Series Model;
基于Volterra级数的起发电动机故障诊断
The Research on Aeroengine Intelligent Modeling and Fault Diagnosis;
航空发动机智能建模与故障诊断研究
Fault Diagnosis of Flameout on CROWN 3.0 Engine While Car Running
丰田皇冠3.0发动机行车熄火故障诊断
Diagnosis、Analysis and Removing of the Electronic controlled Brekdown about Engine
发动机电控系统故障诊断分析与排除
Malfunction diagnosis analysis of a bracket mounting boss for engines
发动机支架安装凸台的断裂故障诊断分析
Research on Aero-Engine Fault Diagnosis Based on Its Whole Body Vibration Signals;
航空发动机整机振动故障诊断技术研究