每一转换器都具有误差遥测特性和各种故障保护特性,包括连续的短路保护(自动恢复)输出特性。
The unit includes remote error sensing and numerous fault protection features, including continuous short circuit protection (with automatic recovery), output.
其缺点是系统的建模误差或外部干扰将对故障诊断的结果产生重大的影响。
Its defect is the system modeling error or external disturbance to the results of the fault diagnosis will produce significant influence.
由于采用相邻的两圈预测下一圈的温度分布,因此可以作为卫星热故障诊断的依据,避免了误差的积累。
Temperature distribution predicted by last two circles can be the basis on thermal fault diagnosis for satellites. Meanwhile the error accumulation can be avoided.
对每一个设备参数都采用最佳线性模型可以最大限度的减少模型误差对故障检测精度的影响,运用此方法建立的模型具有更高的检测精度和灵敏度。
To every equipment parameter that the optimum linear model can utmost reduces the influence to the fault detection precision of model error, and possess higher checkout precision and sensitivity.
例如,一家制造公司调整生产部件和设备故障率和误差使其接近正常水平。
For example, a manufacturing company tracks production parts and equipment failure rates and deviation around averages.
可根据跟随误差的报警,检查出问题,排除故障,保证系统的正常运行。
The fault can be found based on follower error alarm and removed to ensure the system running normally.
飞机的基本控制律采用非线性动态逆方法设计,对于模型不准确和舵面故障等因素导致的逆误差采用神经网络进行在线补偿。
The base control law is designed in nonlinear dynamic inversion, and neural networks are used to cancel the inversion error induced by many reasons, especially by actuator failures.
当交流系统发生三相不对称故障时,忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
该方法能够对传感器漂移故障做出判定,同时可实现测量误差的修正。
By this method the sensor drift can be detected accurately and the measurement error caused by sensor drift may be corrected at the same time.
并对产品测试任务共性特征、系统集成原理、测试安全性、系统故障诊断功能、系统误差进行了分析。
And the general character, system integration principle, test security, system fail diagnosis and systematic error of the test task are analyzed.
轴承是故障发生率比较高的部件,用简易诊断法难免会出现人为的判断误差。
The bearings are the parts with higher malfunction occurrence rate, and it is hard to avoid appearance of the man-made judgment errors to utilize the simple diagnosis method.
通过校验工作修正装配误差,调整示值精度;解决出现的故障。
After calibration, the assembling error was reduced, and the reading accuracy was adjusted, and the failure was removed.
提出了自适应学习率及动量因子的BP神经网络算法和误差逼近度渐近收缩学习的BP神经网络算法,并将其应用于汽轮发电机组振动故障诊断与识别。
The improved BP algorithms based on adaptive parameters adjustment and error contracting gradually are presented, which are applied successfully to fault diagnosis of steam- turbine generator unit.
研究了多传感器数据集成,实现了异常值探测、异常趋势识别、系统误差识别以及监测故障判别等功能。
Firstly, multi-sensor data integration is discussed and is applied to find out abnormal value, abnormal tendency, system error and monitoring default.
介绍了开关电流电路的基本单元结构,讨论了影响故障诊断精度的主要因素,重点分析了电荷注入误差。
The basic unit structure of the SI is introduced in this paper. It also discusses the main factors which affects the precision of fault diagnosis and analyzes the charge injection error in detail.
针对一类具有系统建模误差以及含传感器模型不确定项的非线性控制系统,本文提出了一种用于执行器故障检测与诊断的观测器方法。
Based on observer method, an algorithm of actuator fault detection and diagnosis is presented for a class of nonlinear control systems with system modeling errors and sensor modeling uncertainties.
综合自联想网络的最优估计与故障诊断,自动区分估计误差和传感器故障。
Sensor fault detection is accomplished by integrating the optimal estimation and fault detection logic.
因此,研究测量及测试系统的故障检测与误差分析,以有效减少故障和误差对测试结果的影响,提高测试精度成为必需。
Therefore, the study of fault detection and error analysis for the measurement and testing system is to effectively reduce faults and errors on the impact of the test results.
本课题是在虚拟仪器信号设备自动测试系统的研发基础上,针对此系统的故障检测与误差校准功能进行开发。
It is necessary to improve test accuracy. On the basis of the virtual instrument signaling test system, this paper research for the system fault detection and error calibration function.
它可以用于补偿误差垂距和获得种传感器,以及提供一个估计传感器故障。
It can be used to compensate for offset and gain errors in bridge-type sensors, as well as providing an indication of sensor malfunction.
通过求取相关系数平均值,避免数据采集不同步引起的计算误差,得到按照发生线路故障可能性大小排列的故障选线序列。
The average correlation coefficient is calculated to remove the errors caused by asynchronous sampling and the faulty line selection list is sorted according to the fault probability of line.
针对故障分布模型不唯一这一特点,本文提出采用图分析和误差面积比指数从定性和定量两方面确定其最优分布模型。
The model of failure distribution is not the single one, so the optimum distribution model is determined by applying method of chart analysis and error area ratio.
在所建立模型的基础上,根据平方预报误差(SPE)对传感器故障敏感的特点利用其进行传感器的故障检测。
Based upon the model established here, a square prediction error is used to detect that the sensor fault for SPE (Principle component analysis) is sensitive to the sensor fault.
行波色散是造成故障测距误差大的重要原因:利用行波故障定位时要考虑采用多相行波数据。
Traveling wave dispersion in the parallel line is more complex than that in the single line and is an important reason why the fault location error is large for traveling wave method.
使用自适应谐振理论(ART)和误差反向传播(B)两种神经网络,开发了汽轮发电机组振动故障诊断模型。
The vibrating fault diagnosis system for turbo-generator unit based on ART and BP network is developed in this work.
文章分析了现有测距设备的不足和测距方法存在误差的原因,并设计了基于虚拟仪器的电力电缆故障智能测距仪。
The authors analyzed the shortage in both existing fault location equipments and methods, and a virtual instrument based power cable fault location intelligent equipment was designed.
本文所提出的空白试验及误差分析方法,为测试微反装置的性能和判断故障提供了简捷可靠的手段。
The blank test and errors analysis suggested in this paper provide a simple and effective method to evaluate the performance of a microreactor.
结果表明,测量误差对过热元件的故障诊断影响较小。
The result shows that the method is useful for the fault diagnosis of the overheated components in electric control cabinets.
该方法物理意义明确,可以通过对故障诊断误差的学习,实时修正故障模型,实现对不确定性和慢时变性对象的鲁棒故障诊断。
The method which has definite physical meaning, can change fault diagnosis model to adapt to the variability and uncertainty of the plant by learning the fault diagnosis err.
该方法物理意义明确,可以通过对故障诊断误差的学习,实时修正故障模型,实现对不确定性和慢时变性对象的鲁棒故障诊断。
The method which has definite physical meaning, can change fault diagnosis model to adapt to the variability and uncertainty of the plant by learning the fault diagnosis err.
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