查询词典 disturbances

Due to its good effect in the reservation of information of signal abrupt change, mathematical morphology is often applied in the detection and location of short-term power quality disturbance, however, there is still a defect of invalid detection existing in partial detection methods based on mathematical morphology while some zero-crossing disturbances are detected. In this paper three mathematical morphology based disturbance detection and location methods, i.e., the method based on first-order derivation and morphological gradient, the method based on morphological gradient and soft threshold processing and the method based on dq decomposition and top-hat transform, are analyzed, that is, by means of simulation the adaptability of these methods in the analysis on the signals of voltage sag, voltage swell and electromagnetic transient oscillation is compared.

数学形态学因其在保留信号突变点信息方面有很好的效果，因此常用于短时电能质量扰动的检测和定位，但基于数学形态学的部分方法仍存在对某些过零点扰动检测失效的缺点，文章分析了3种基于数学形态学的扰动检测和定位方法，即基于1阶求导和形态梯度的方法、基于形态梯度和软阈值处理的方法、基于dq分解和高帽变换的方法，通过仿真比较了3种方法在分析电压暂降、电压暂升、电磁暂态振荡等信号方面的适应性，结果发现基于dq分解和高帽变换的方法在检测过零点扰动时具有很好的效果，因此选取这种方法对实测扰动数据进行了检测和定位分析。

It is generally agreed that a major elem in the tendency of economic systems to overshoot in response to disturbances.

一般都同意这一看法，即主要因素在于经济制度倾向于对失调作出过度的反应。

By re-constructing the system, the residual error dynamic characteristics of unknown input and fault signals including unknown disturbances and modelling error are obtained. The energy norm indexes of disturbance and fault signals of residual error are selected separately to reflect the restraint of disturbance and the sensitivity of faults, and the design of fault detection observer is described as an optimization problem.

通过对系统进行重构，获取了包括未知扰动、建模误差等未知输入信号和故障信号的残差动态特性，分别选取残差的扰动信号和故障信号的能量范数指标来体现其对扰动的抑制作用和对故障的灵敏性，并将故障检测观测器的设计描述为一个优化问题。

We studied the constraints and impacts of inhomogeneous climatic mean state of Tropical Pacific Ocean on air-sea disturbances using the relationship between the epilimnion and variation of sea bottom orography in the Eastern and Western Pacific Ocean, and provided dynamical explanation.

利用东西太平洋地区海底地形的变化与温跃层之间的关系，研究了热带太平洋非均匀的气候基态对海气扰动形成和发展的影响和制约，并作出了动力学解释。3。

Elevated PTH levels have been associated with uremic neuropathy and other metabolic disturbances, which include altered pancreatic response, erythropoiesis, and cardiac and liver function abnormalities.

甲状旁腺激素水平升高已与尿毒症神经病变和其他代谢紊乱，其中包括改变胰腺的反应，红细胞和心脏，肝功能异常。

Strong headaches and nervous disturbances also are removed experientially.

猛烈头疼和神经紊乱也被体验去除。

The above analysis may readily be extended to general plane disturbances not necessarily harmonic.

上面的分析可以很容易地引申到普遍的而不一定是简谐的平面扰动。

When making plans for biodiversity conservation for a forest management unit such as forestry bureau or forest farm, we should firstly make conservation priority for different forest types according to the resistance and adaptability of forest to disturbances.

在一个森林经营单位进行生物多样性的保护时，首先应根据不同森林类型对干扰的适应和抵抗力大小确定对各类森林优先保护的次序，然后再在各类森林的不同小班中进行生物多样性间接评价打分表的填写，最后根据不同小班生物多样性得分的多少确定其保护的等级或先后次序。

Therefore,the Low Pass Filter is introduced on base of common sliding mode control.The control law can guarantee fast convergence of trajectory tracking error as well as robustness for external disturbances and parameter uncertainties.

在一般滑模控制的基础上引入低通滤波器，则保证了轨迹跟踪误差的快速收敛，同时使系统具有很强的鲁棒性。

This method is much efficiency in test finite sample financial time series data with non-Gaussian disturbances.

该检验方法对于具有非高斯分布扰动项的有限样本金融时间序列的检验非常有效。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。