CAJ | 학술논문

考虑到自动机的高速运动过程及其振动信号的非线性、短时、瞬态、冲击特性，对自动机的故障机理进行了分析，找到了故障的易发生位置；根据枪械的现实使用状况和理论分析的结果，运用机械加工的手段设置了三种典型故障，并设计实验采集和记录了自动机的振动响应信号。提出使用聚合经验模态分解( EEMD)结合相关系数法对自动机故障信号进行预处理。然后，运用覆盖法求各工况自动机振动信号的广义分形维数。最后，根据序列单值优化逼近法实现自动机故障的识别。
고필도자동궤적고속운동과정급기진동신호적비선성、단시、순태、충격특성，대자동궤적고장궤리진행료분석，조도료고장적역발생위치；근거창계적현실사용상황화이론분석적결과，운용궤계가공적수단설치료삼충전형고장，병설계실험채집화기록료자동궤적진동향응신호。제출사용취합경험모태분해( EEMD)결합상관계수법대자동궤고장신호진행예처리。연후，운용복개법구각공황자동궤진동신호적엄의분형유수。최후，근거서렬단치우화핍근법실현자동궤고장적식별。
Considering the high-speed automaton movement process and its nonlinear vibration signal, short time, transient, impact properties, in this paper, the fault mechanism are analyzed, and finds the prone to fault location;According to the reality of gun usage and the results of the theoretical analysis to set up three kinds of typical faults with machining means, and design the experiment to collect and record the vibration response signal of the automaton. A method which is proposed to preprocess the fault signals by applying the Ensemble Empirical Mode Decomposition ( EEMD) with correlation coefficient method, and then using the covering method to calculate the generalized fractal dimension of the automaton vibration signals in the vari-ous states. Finally, realizing automaton fault diagnosis according to sequence of single value judging optimal approximation method.