| 1. | Since the signals of power quality disturbances are nonstationary , it is a tough task to analyze them
然而，电能质量扰动信号属于非平稳信号，对这类复杂信号进行分析并非易事。 |
| 2. | It is efficiency in analysis the power quality . rule - based expert system is schemed for automatism identifies power quality disturbance signal
西安理工大学硕士学位论文规则基专家系统的设计实现了自动的识别电能质量扰动信号。 |
| 3. | Standard h control : because standard h control has a strong restrain for loaded disturbance , it is applied for control of servo system
标准h _控制：由于标准h _控制对于不确定性外部扰动信号具有良好的抑制作用，在伺服系统中得到了很好的应用。 |
| 4. | This thesis is mainly concerned with problems of power quality disturbance signal ' s deal and wavelet transform , after study the character of power quality signal , we select propriety wavelet
本文主要的研究内容是电能质量扰动信号的处理、小波变换的理论及专家系统的扰动分类。首先研究了电能质量扰动信号小波变换后的特点，选取了合适的小波。 |
| 5. | Initial growths of disturbances are measured by means of hot - wire anemometry . due to the detected signals with low signal to noise ratio , the coherence function is used to eliminate background noise during data reduction
在扰动增长的初始阶段，信号的信噪比非常地低，根据相关谱分析方法，应用相干函数，将扰动信号有效地提取出来，测量了初始扰动的增长。 |
| 6. | It first classifies power quality disturbancesinto stable one and transient one by wavelet ’ s multi - resolution analysis , and thencompresses the stable and transient disturbance signals by fourier transform andorthogonal wavelet packet transform , respectively
在此基础上,提出一种针对复杂电气信号的基于傅立叶变换和小波包变换的综合电能质量扰动信号数据压缩新方法。 |
| 7. | The paper provides a new approach for recognize power quality character thorough experiment . processing the signal through time - domain and wavelet - domain , the following simulation results show that the arithmetic fully meets the requirements of classification
通过对各种扰动信号的特征进行反复分析，提出了一种新型的混合算法，分别从时域或小波多分辨率分解算法进行处理，区分其特征。 |
| 8. | Simultaneously , samplingdata are usually overlapped by noise which will impact on the analysis results . forraising the snr of the signal and reducing data storage , the de - noising and datacompression methods of power quality disturbance signal are studied in this paper
为提高扰动信号的信噪比,减小扰动信号数据存储和传输量,本文对电能质量扰动信号的去噪和数据压缩方法分别进行了研究。 |
| 9. | In order to analyze and reduce thedisturbances phenomenon , a large number of power quality monitors are applied . generally speaking , the sampling frequency of the monitor may be very high , whichwill bring a large data storage and communication cost
但为完整记录扰动信息,该类装置一般采用高频采样率,造成信号存储和传输成本增加;另外采集到的扰动信号中常叠加着噪声,会影响信号监测分析的效果。 |
| 10. | H self - tuning regulator control : although standard h control has a strong restrain for uncertainly loaded disturbance , it can not guarantee a good robustness for uncertain parameters therefore h self - tuning regulator control is used in this system
H _自校正调节器控制：虽然标准h _控制对于不确定性外部扰动信号具有良好的抑制作用，但是它不能保证对所有允许的参数不确定性同样具有鲁棒性。 |
