fault n. 1.过失,过错;罪过,责任。 2.缺点,缺陷,瑕疵。 3.(猎狗的)失去嗅迹。 4.【电学】故障,误差;漏电;【地质学;地理学】断层。 5.【网球】发球出界;犯规。 Faults are thick where love is thin. 〔谚语〕一朝情义淡,样样不顺眼。 fault detection 【机械工程】探伤。 The fault is his own. 这是他自己的错。 a grave fault in a theory 理论上的重大缺陷。 a fault in the machine 机械故障。 image fault 【物理学】像差,影像失真。 numerical faults 数值误差。 a fault on the right side 因祸得福。 be at fault 1. (猎犬追捕猎物等时)失去嗅迹,踌躇不前;不知所措,正在为难。 2. 出毛病,有故障。 3. = in fault (My memory is at fault . 我想不起来了)。 find fault in 看出…缺点。 find fault with 找…的岔子。 have no fault to find with 无错可寻。 hit off a fault (猎狗)闻出(曾一度错失的)嗅迹。 in fault 有过错,有责任 (Who is in fault 是谁的不是?)。 to a fault 过度,极端 (He is kind to a fault. 他过分老实)。 whip a fault out of sb. 鞭打某人使之改过。 with all faults 不保证商品没有缺点。 without fault 〔古语〕无误,确实。 vi. 1.【地质学;地理学】产生断层;有断层余迹。 2.发球出界;犯规。 3.〔方言〕责备,挑剔。 4.〔古语〕犯错误,做错。 vt. 1.找…的岔子,挑剔;〔方言〕责备。 2.【地质学;地理学】使产生断层。 3.把…做错。 He faulted my speech in two ways. 他认为我的讲话有两点不妥。 fault one's performance 表演发生失误。
signal n. 1.信号,暗号;信号器。 2.动机,导火线 (for)。 3.预兆,征象。 call signal 【无线电】呼号。 an alarm signal 警报(器)。 an information signal 〔美国〕暴风警报(旗)。 an international code of signals 国际通用信号。 a signal of distress =a distress signal 船只失事信号。 adj. 1.暗号的,作信号用的。 2.显著的,非常的,优越的。 a signal victory [defeat] 大胜[败]。 vt.,vi. (〔英国〕 -ll-) 发信号[警报]给(人、船等);用信号[警报]通知(暴风、危险等);用动作[手势]示意;预示。 a signaling bomb 信号弹。
In this paper , lipschitz exponent method was applied to identify the singularity in power system fault signal analysis and a simulation example was given in the last chapter 对于电力系统故障信号的分析,本文应用lipschitz指数对奇异点进行识别,并在论文中给出了仿真计算例子。
Having good time - frequency localization character , and correctly identifying singularity point in fault signal , wavelet is the main analysis method in this paper 小波变换具有良好的时频局部性,具有变焦距的特点,对故障信号中的奇异点能够准确识别,是论文中应用的主要分析方法。
The simulation results and the fault signal de - noising experiment of electrical machine show that the proposed method is better than the former ones with precision improved by 100 % 通过仿真计算和电机故障信号消噪表明,新的方法在电机故障信号消噪中比一般小波方法效果好,精度提高1倍以上。
By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time - frequency transform is validated for the transient components in complex signal 通过数字模拟实验与齿轮箱故障信号检测,验证了新的双线性时间频率分布对复杂信号中瞬时分量的探测效果。
In view of the superiority of wavelet transform to non - stationary signals , this paper focuses on how to detect and analyze the fault signals and the electric machine measurement signals by wavelet transform 考虑到小波变换处理非平稳信号的优越性,本文研究如何将小波变换应用于电机故障诊断和电机测试中。
In spite of the limited samples , the simulation result shows that using wavelet analysis to separate the character from the transient fault signals is an efficient way 尽管本论文中选择的仿真算例针对的情况有限,但是仿真结果表明:利用小波分析理论对电力系统故障暂态信号进行特征提取处理是行之有效的方法。
However , wavelet analysis has the excellent time - frequency local performance , it can detect the different frequency components of the fault signals by its adjustable time - frequency window 小波变换作为一种时频分析方法,它在时频域都具有表征信号局部特征的能力,能通过时频窗的灵活变换宋突出信号的不同频率成分。
One complete set of the fault signal ' s gathering and analyzing instrument is constructed . by repeatedly experiments the author concluded that the default signal in different stage has different characteristic 通过组建的一整套转子碰摩故障信号采集、分析系统,经过大量实验,得到不同阶段的碰摩故障信号特征的区别。
Secondly , because wavelet analysis can change the time and frequency windows according to the variation of signals " frequency , it can analyze the singularity of fault signals , and then confirm the accurate fault time efficiently 接着,文章利用小波变换“变焦距”的性质,对故障信号的奇异点进行分析,确定故障时刻。
Using fft and wavelet package analysis theory , the abrupt fault signals detection for power systems on amplitude and frequency is also mentioned to advance the wavelet mra signal detection approach . 2 结合fft技术,利用小波包分析给出了一种电力信号幅值突变和频率突变故障的检测方法,改善了小波多分辨分析信号检测方法的不足。