查询词典 fault time

In this project, we have tackled the robust fault detection and diagnosis problem for affine nonlinear sampled-data systems based on nonlinear H∞ filtering theory,and focused on the design of robust fault dtetction filter. The main contribution of this project is that we (1)present design methods of robust fault estimator for nonlinear discrete-time systems based on least square estimation and linear matrix inequality;(2)improve the bounded real lemma of systems with finite discrete jumps;(3)develop the robust fault detection filters for affine nonlinear sampled-data systems with parameter uncertainties based on the improved bounded real lemma.

本项目以提高故障的正确检测率为目的，以非线性H∞滤波理论为基础，对不确定仿射非线性采样系统的鲁棒故障检测与诊断问题进行了研究，重点研究了不确定仿射非线性采样系统的鲁棒故障检测滤波器设计问题，取得了一些新的成果，主要成果有：(1)基于最小二乘估计和线性矩阵不等式，给出了非线性离散系统的鲁棒故障估计器设计方法；(2)改进了有限跳跃点系统的有界实引理；（3）基于改进的有界实引理，给出了不确定仿射非线性采样系统的鲁棒故障检测滤波器的设计方法。

Therefore, systemically research on distribution and activity of fault system in the middle part of Huanghua depression is done in this paper, including the quantitative analysis of planar distribution and activity of fault system ,the anatomization of the activity and evolution of the major fault, in order to determine the relativity and cause of the fault system. Conbined with the found reservoirs and the evidences of oil and gas displaying .The relationship between fault activity time and activity characteristic, planar distribution and the displacement type of the fault system, the contact relationship of lithology with the formation of oil and gas pools is discussed and finally the faults developing model to form oil and gas pools of upper Tertiary system are found in middle part Huanghua depression.

本论文以黄骅坳陷中区为主系统的研究了断裂系统的展布和活动特征，包括断裂平面展布与活动的定量分析、主干二级断层的几何特征和活动演化历史的详细解剖，来分析断裂系统的相关性和断裂系统的成因，并与黄骅坳陷已发现的油气藏及已有的油气显示成果结合，探讨断层的活动时间和活动特点、断层的平面分布、平面和剖面组合关系、断层两盘的岩性对接关系等方面与油气成藏的关系，最终建立黄骅坳陷中区新近系油气成藏的断裂发育模式。

According to this principle, for example, Hongliu regional fault, by analyzing the size and features of unusual acoustic travel time on the upper wall and footwall and the breakpoint, we analyzed and judged mechanical properties of the fault and the dense of the filling materials in the fault belt, determining the enclosing ability of the fault and summing up the three model to judge the sealing ability of the fault.

以红柳地区断层为例，通过分析断层上下盘及断点处声波时差异常值大小，判断断层的力学性质及断裂充填物的致密程度，从而确定断层的封闭性，并总结出3种声波时差判断断层封闭性的判别模式。

Finally, the controlling role of structure to sedimentary was analyzed. It is showing that time-transgressive different structural zone developed different sedimentary system; the thickness of sedimentary formation and lithic facies were different on the simultaneous lateral layer of growth fault; the expansive orientation of sedimentary system was controlled by the strike of fault; the sedimentary system developed differently became of the tectonic activity was differently; step thrust slip fault can built-up multistage fault fans.

最后分析构造对沉积的控制作用，主要表现在：不同时期不同的构造带发育不同的沉积体系；生长断层造成断层两侧同期地层沉积厚度与岩相的明显差异；断层的走向控制沉积体系的展布方向；构造活动导致沉积体系的发育有显著的差异；阶梯式逆冲断层可形成多级断崖扇。

According to the superposition principle of electric circuits, the post-fault power network is equivalent to the superposition of network in normal state and that composed by fault components; then taking single-phase system for example, the fault distance and asynchronous time are taken as unknown numbers and the fault location equations for normal voltage and current phasors as well as fault components are established; and then the analytical expression for fault distance is deduced, in addition the recognition method of false root is given.

该算法根据电路叠加原理，将故障后的网络等效为正常状态网络和故障分量网络的叠加，然后以单相系统为例，以故障距离和非同步时间作为未知数，对正常电流电压相量和故障分量分别建立测距方程组，推导出故障距离的解析表达式，并给出了伪根的识别方法。

The main research work and its results are: 1Empirical results are analysed for the relations of fault displacement and earthquake magnitude, and difference between permanent ground deformation and maxium dynamic relative displacement on the two sides of fault; 2An analytic method is proposed for resopnse of a buried pipeline due to earthquake fault movement; 3A new shell model with an equivalent boundary and relted finite element analysis method are proposed for estimating response of a buried pipeline under large fault movement; 4By the proposed method, damage performance of water supply steel pipelines with large diameter is simulated to the real cases in Kocaeli Earthquake and Ji-Ji Earthquake, and simulating results show the real failure mode of pipes is revealed; 5Effects of overlying soil and soft/hard interlayers are analyzed on ground rupture mode and degree due to earthquake fault, and some earthquake rupture phenomena in soil layers are theoretically described for the first time; 6Pipeline response characters are discussed for the case of considering effects of soil layers on ground rupture mode; 7Research results and proposed method are applied in seismic analysis of pipline acrossing fault in the Gas Tansportation Project from West to East in China.

主要工作和成果包括：1）分析了不同断层位错形式下地表破裂位错量与震级之间的经验关系，并基于集集地震近断层记录分析了断层两侧永久地面变形和地震动相对位移幅值之间的差别，为合理地考虑地震断层位错地面变形动态影响提供了依据；2）发展了断层位错地面大变形下管线反应分析模型并给出物理概念明确、简单实用的解析分析方法；3）建立了断层位错下埋地管线反应分析的等效边界壳模型有限元方法，方法中引入了以非线性弹簧形式模拟离断层较远处管段影响的等效边界，简化了计算模型并突出了近断层处管体反应；4）利用等效边界壳模型方法，对土耳其地震和集集地震中大口径埋地管线震害进行了模拟，结果表明所提方法可以更清地解释震害所表现的管体破坏特征；5）研究了覆盖土层和软硬夹层的存在对断层位错地面破裂形式和程度的影响，首次从理论上解释了某些地震地表破裂现象；6）探讨了考虑土层对断层位错地面变形影响的管体反应特征；7）本项目成果已在西气东输工程的管道跨断层抗震问题分析中得到了应用。

The Hilbert amplitude envelope of the stator current includes the low frequency of fault characteristic, thus it can reduce the signal length by resample the Hilbert amplitude envelope of the stator current by downsampling, which can avoid spectrum aliasing. Then it can reduce the computation time of the MUSIC Method for the spectrum analysis to the resampled signals for the given bandwidth. Meanwhile combining continuous subdivision Fourier transform and rotor slot harmonics based slip estimation it can in advance estimate the concrete values of the fault characteristic frequency, and then inquiry purposely the fault feature component information in the stator current spectrum in order to accomplish the broken rotor bar fault with high sensitivity and h reliability, which eliminates adverse effect of issuable false peaks to the fault detection and formed a novel scheme to detect broken rotor bar fault.

定子电流Hilbert幅值包络信号包含了低频的故障特征频率调制信号，故通过对定子电流Hilbert幅值包络信号进行降采样率重采样、减少分析信号长度，可避免低频段频谱混叠，再对减少的重采样数据进行具有超分辨率的MUSIC低频段估计，可大大降低MUSIC算法频谱估计时间；运用连续细化傅里叶变换和转子齿槽谐波转差率估计技术，可预知故障特征频率精确值，从而可有目的地查询故障分量，消除MUSIC虚假波峰对故障检测混淆的影响，大大提高了故障检测的灵敏度和可靠性，以此形成异步电动机转子断条故障检测新方法。

So during the collection of fault sample data and checking data, the paper sets up the mathematics model of control system first. We cause all kinds of fault in the control system, then collects a variety of fault data. After unitarily dealing, the fault data server as the sample data of training neural network. At the same time, according to the collection of checking data, it examines whether the trained neural network have the function of fault diagnosis.

在故障样本数据及检验数据的采集过程中，首先建立了控制系统的数学模型，人为地让控制系统发生各种故障，从而采集到各种故障数据，经过归一化处理后，作为训练神经网络的样本数据；同时，也采集检验数据，用以检验训练出的神经网络是否能够起到故障诊断的作用。

Transmission network"s fault affects power system"s safe and reliable operation directly. Accurate judgement of fault locality and fault type can shorten the time in disposing fault, realize the power supplys quick resumption and lessen the economic losses because of fault.

输电网络故障直接影响电力系统的安全稳定运行，准确的故障区域、故障类型的判断能缩短故障处理的时间，实现故障后的快速恢复供电，减少因停电造成的经济损失。

At the same time, along with the increment of cities' railway transportation, it isharder and harder for the traditional protection equipments to distinguish the remote shortcircuit fault or the train starting correctly, especially for the fault with electricity arc ortransition resistance. This always results in the equipment operation time longer that it can'tcut off the short fault rapidly.

同时，随着城市轨道交通系统运量的不断加大，传统的保护装置越来越不能正确可靠地区分远端短路故障状态与机车起动状态，尤其是当发生远端电弧故障或经大过渡电阻故障时，往往造成保护动作时限加长。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。