Application and improvement of grey relevant in the fault diagnosis for diesel engine 灰色关联度在柴油机故障诊断中的应用与改进
Application of the instantaneous speed in fault diagnosis of the multi - cylinder diesel engine 瞬时转速在多缸柴油机故障诊断中的应用
The torsional vibration measuring system of diesel plant has several good qualities such as : measuring easy , without making direct contact , sensor cheap and long life 利用扭振信号进行柴油机故障诊断，具有传感器简单、安装方便、价格便宜、使用寿命长等优点。
At the same time , the new approach based on lw and k - l information is introduced in order to identify style and degree of diesel faults , and is implied in faults diagnosis flexibly 对于故障类型和故障程度的识别上，提出了局域波k - l信息量故障诊断方法，并灵活的用于柴油机故障诊断中。
By reviewing the diesel engine fault diagnosis research , this paper illustrates the fault mechanism of diesel engine , studies the realization of the rsmfdde theory method , and establishes the rsmfdde system 回顾了柴油机故障诊断的研究背景,阐述了柴油发动机故障机理,研究了实现rsmfdde的理论方法,建立了rsmfdde系统。
On the basis of diesel engine ' s fault modules , the mining of knowledge rules about diagnosis of diesel engine are outlined in detail , including simple knowledge rules mining , cluster analysis and association rules mining 本文在分析柴油机的各种故障模式的基础上，详细分析了柴油机故障诊断规则的挖掘，包括采用常用油液分析方法的简单规则挖掘、聚类分析挖掘及关联规则挖掘。
A diesel fault diagnosis system ( ietvds ) using torsional vibration is invented in this paper . there are two parts in the system , one is measuring part , the other is diagnosis part . torsional vibration can be measured by a 40mhz crystal oscillator 本文研制了国内第一套基于扭振的柴油机故障诊断系统，该系统共有两个部分组成，在扭振测量部分中，计数晶振频率达到40mhz ，是目前国内计
Under similar working condition have similar value while different working condition have different value , so the correlation dimension can usefully reflect working conditions . this way promote the technique about condition monitoring and fault diagnosis of diesel engine into further step 该方法能够通过对各基本模式分量的分析，获取柴油机的故障类型和故障程度，从而把分形技术在柴油机故障诊断中的应用推进了一步。
This method of diesel engine fault diagnosis is feasible theoretically . while the fault diagnosis system using this method is rare , just because the crankshaft instantaneous angular acceleration measurement is demanding , such as , good frequency response , high precision 这种柴油机故障诊断的方法在理论上是可行的,但目前这种成型的系统不多,究其原因是测量曲轴的瞬时角加速度需要系统具有良好的频率响应特性与高精度。
Micro - controller was programed to measure the width of engine running speed signal successively , via pdiusbd12 these measured data are transmitted to pc , according to some algorithm , for pc program to analyze , process and display angular acceleration , thus diagnose diesel engine 单片机连续采集转速信号的脉冲宽度,同时通过pdiusbd12将采集的数据上传到个人电脑,供电脑按照特定的算法分析和处理,以进行角加速度波形显示和柴油机故障诊断。
