CAJ | 학술논문

针对柴油机失缸故障检测排除工作效率低的问题，利用瞬时转速分析方法实现柴油机失缸故障快速检测。通过坦克实车故障模拟试验，测量了柴油机气缸失火时的瞬时转速信号，采用非线性插值方法对瞬时转速序列进行整周期调整。利用小波包分解方法对瞬时转速信号提取了转速波动信号，分析提取了瞬时转速信号的复杂度和时域、频域特征，建立了基于支持向量机的故障诊断模型，实现了气缸失火故障诊断，并利用瞬时转速波动率作为判定参数，实现了故障定位。
침대시유궤실항고장검측배제공작효솔저적문제，이용순시전속분석방법실현시유궤실항고장쾌속검측。통과탄극실차고장모의시험，측량료시유궤기항실화시적순시전속신호，채용비선성삽치방법대순시전속서렬진행정주기조정。이용소파포분해방법대순시전속신호제취료전속파동신호，분석제취료순시전속신호적복잡도화시역、빈역특정，건립료기우지지향량궤적고장진단모형，실현료기항실화고장진단，병이용순시전속파동솔작위판정삼수，실현료고장정위。
Aiming at low work efficiency of detecting misfire fault of tank diesel engine,an approach to quick detecting misfire fault of diesel engine through instantaneous speed analysis is put forward,in order to speed detecting work.The instantaneous speed signal of diesel engine is measured through simulating the misfire fault on a tank engine,and is adjusted in a whole period by nonlinear interpolation.The speed wave is extracted from the instantaneous speed signal by wavelet analysis.Complexity of the original speed signals and features of the instantaneous angular speed in time and frequency domain are extracted as fault features.A model based on support vector machine is established to diagnose the cylinder misfire fault,and then the misfiring cylinder can be recognized by calculating the wave ratio of instantaneous speed.