| 1. | Wavelet theory more excellent in wiping off yawp of steady signal and unsteady signal than conventional ftp theory
小波理论对平稳信号及非平稳信号的消噪处理比传统的傅立叶分析更优越。 |
| 2. | Wavelet transform becomes the main subject of image compression coding for it has the advantage of describing non - steady signal
小波变换由于具有能够有效描述非平稳信号的独特优点而成为当前图像压缩编码研究的主要方向。 |
| 3. | Improving the result of system based on the fx - lms structure while dealing with non - steady signal , the rls algorithm based qr decompose has been used in the the fx - lms structure
为改善基于fx - lms结构的系统对非平稳背景噪声的抵消性能，在fx - lms结构的系统中应用了基于qr分解的rls方法。 |
| 4. | Continuous wavelet transform ( cwt ) is the strong tool to analysis the non - steady signals , also it ' s algorithm is more suitable for data compression than that of discrete wavelet transform ( dwt )
而连续小波变换( cwt )是分析非平稳信号的有力工具，且其算法在数据压缩等方面的性能优于离散小波变换。 |
| 5. | The wavelet ' s characteristic of focus " varieties make wavelet better analyses ability in the time field and the frequency field . it is a perfect method of analyzing non - steady signal , and it is fit to analysis ultrasonic pulse echo signal
而小波的“变焦距”特性使得小波分析在时域和频域中都具有良好的分析能力，是一种理想的分析非稳态信号的途径，适于对超声脉冲回波信号的分析。 |
| 6. | This paper analyses the transient character of line fault when the neutral point connects to ground in different ways . from the angle of signal processing , the wavelet packet analysis theory is introduced to selecting fault , in which the fault character is not the steady signal but the transient signal
本文在中性点不同接地方式下，研究和分析了线路故障特征量的暂态特点，主要从信号处理的角度，提出将小波包分析理论运用到故障选线。 |
| 7. | Due to the unsteadiness of the vibration signal , conventional methods of gear fault diagnosis based on steady signal processing , which consist of time domain and frequency domain analysis method , are not as effective to local defect as to dispersed defect of gear
传统的齿轮故障诊断方法（包括频域分析方法和时域分析方法）对于齿轮的分布故障有很好的诊断效果。但当齿轮产生局部故障时，失效的轮齿间断地进入啮合，产生冲击振动，使得齿轮振动信号包含了非平稳或时变成分。 |
| 8. | This paper researches the non - direct - grounded system fault detection from software arithmetic view , whose main content is as follows : the paper analyses the system running characters before and after fault . and the paper analyses the fault transient signal and fault steady signal and all parts in fault steady signal after the single line - to - earth fault occurs , and discovers the fault laws and appearance of fault signal . the analyzing of the fault laws and fault phenomenon of non - direct - grounded system all above is the base of analyzing arithmetic
本文针对小电流接地系统选线的问题，从软件算法的角度进行了研究，主要内容如下：对小电流接地系统故障前和故障后系统的运行特点进行了分析，并且对小电流接地系统发生单相接地故障后，故障暂态信号、故障稳态信号以及故障稳态信号的各种成分进行了深入的分析，找到了故障的规律以及其故障信号的表现形式，为对各种算法的分析比较打下了基础。 |
| 9. | The current break arithmetic and net arithmetic use fault steady signal as defection gist which is steady and easily identified , and the two arithmetic inherits the excellence of the tradition breadth comparing and phase comparing , which overcomes the effect of the changing of the system parameters which brings the difficult for fault defection
电流突变量算法和网络算法以故障后稳态基波信号作为选线依据，信号稳定，容易识别，并且这两种算法吸取了传统比幅比相算法的优点，有效的克服了系统参数变化等影响带来的选线困难。 |
| 10. | This paper analyses the steady and transient character of line fault when the neutral point connects to ground in different ways . from the angle of signal processing , the wavelet analysis theory and the artificial neural networks are introduced to fault location , in which the fault character is not the steady signal but the transient signal
本文在中性点不同接地方式下，研究和分析了线路零序故障特征量的稳态和暂态特点，主要从信号处理的角度，提出将小波分析理论和人工神经网络原理运用到故障定位，将基于稳态信号的定位原理转移到基于故障特征量暂态信号的定位原理。 |
