A novel approach on power quality disturbance detection is presented in this paper.
提出了一种新的电能质量扰动识别与定位方法。
Wavelet soft-threshold de-noising method was applied to preprocess the noisy signal, and the noise interference in disturbance detection was reduced to a great extent.
采用小波软阈值去噪方法对信号噪声进行预处理,很大程度地减小了噪声对扰动检测的干扰。
In a realistic radar detection scenario, the disturbance power generated by thermal noise and clutter is unknown.
在实际的雷达检测环境中,杂波、热噪声等产生的干扰功率通常是未知的。
It features with simple circuit, accurate position detection, immunity from noise and common mode disturbance and wide speed scope.
该控制系统的优点是电路简单,位置检测准确,免受噪声和共模干扰影响,调速范围增加。
The method not only disposes the disturbance yawp , but also shortens the response time of leaks detection, and heightens the precision of leaks location.
两种方法的结合不但可以有效地去除干扰噪声,而且缩短了泄漏检测的响应时间,提高了泄漏定位的精度。
A method for fault detection and identification in control system under external disturbance and variations of plant parameters is presented.
提出了一种在模型参数变动和存在外部扰动条件下的控制系统故障检测与识别方法。
This paper realizes disturbance de-coupled with model error and system uncertainty by using a combination of full-order nonlinear unknown input observer and fault detection filter.
该文设计了全维非线性未知输入观测器,实现检测滤波器对于被控对象模型误差和系统不确定性因素的干扰解耦。
Therefore, and approach to the detection of power quality disturbance using short duration Lipschitz exponent is presented.
为此提出用短时李氏指数检测电能质量扰动的方法。
Then the design of fault detection filter with robust eigenstructure assignment is investigated in a class of residual signal for the unknown input disturbance can not be completely decoupled.
同时,针对残差信号与未知输入干扰不能完全解耦的情况,本文采用特征结构配置方法进行鲁棒故障检测滤波器设计。
The type of disturbance during TEM detection and the attributes of noise on curves were analyzed.
简要分析了瞬变电磁法探测时的干扰类型,对于噪音在曲线上的表象特征进行了分析。
Sea clutter is the undesired radar echoes from sea surface. The existence of sea clutter contribute a serious disturbance to the target detection performance of radar.
海杂波是海面反射的雷达回波,海杂波的存在严重干扰了雷达对海面目标的检测性能。
Because of the disturbance of environment and apparatus, the detected signal is very faint and the detection is very difficult.
由于需要检测的生物体信号非常微弱,极易受到外界环境和器件本身的干扰,所以测量困难。
With the problem of noise disturbance in leak detection and location of pipeline, a signal process method based on empirical mode decomposition (EMD) and cross-correlation was presented.
针对长输管道泄漏检测与定位中噪声干扰问题,提出了一种基于EMD分解和相关分析的管道泄漏检测与定位方法。
Practice demonstrated to reduce lateral influence avoid other electromagnetic signal disturbance rationally select inducing mode and position have prodigious influence on detection effects.
实践证明,为减小旁侧影响,避免其它电磁信号干挠,合理选择激发方式、激发位置对探测效果影响很大。
RFDF(robust fault detection filter) of a class of uncertain linear state multi-delay systems with external disturbance is studied.
研究一类具有外部扰动的不确定线性时滞系统的鲁棒故障诊断滤波器设计问题。
This paper discusses several kinds of disturbance in mobile vehi- c1e detection station. Concrete methods to solve the disturbance are given.
讨论了流动式机动车检测站微机系统数据采集中的抗干扰问题,分析了干扰的来源,并提出了抗干扰的措施.。
The robust fault detection filter design for singular systems with uncertain disturbance is studied.
研究了受不确定性扰动影响下奇异系统的鲁棒故障诊断滤波器设计问题。
This paper considers the simultaneous fault detection and control problem for a class of time-delay systems with both disturbance and faults.
针对一类状态时滞系统,研究了控制器与故障诊断器集成设计问题。
The results indicate that non-detection zone of active frequency drift with feedback method is obviously less than non-detection zone of active frequency drift with fixed disturbance method.
结果表明,带反馈的主动移频式孤岛检测的检测盲区明显小于固定扰动的主动移频式孤岛检测的检测盲区。
The results indicate that non-detection zone of active frequency drift with feedback method is obviously less than non-detection zone of active frequency drift with fixed disturbance method.
结果表明,带反馈的主动移频式孤岛检测的检测盲区明显小于固定扰动的主动移频式孤岛检测的检测盲区。
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