故障信号

This paper use sensor to diagnose antifriction bearings' vibration signal for failure examination and diagnosis. It can study different kinds of vibration signals of different bearings which expressed out.

本文利用传感器检测滚动轴承的振动信号进行故障检测与诊断，可以研究不同的滚动轴承的不同的故障所表现的出来的不同的振动信号。

Remote signal analysis and fault diagnosis technology is the integration of network technology, computer technology, signal analysis and fault diagnosis technology, which is the result of development of science and technology.

摘要远程信号分析与故障诊断技术是网络技术、计算机技术、信号分析以及故障诊断技术的结合，是生产发展的需要和科技发展的必然结果。

Signal acquisition, signal processing, Fault Diagnosis Expert System for data transmission and remote fault diagnosis are the key issues which need to be resolved.

信号的采集、信号处理、数据的传输和故障诊断专家系统是远程故障诊断中需要解决的关键问题。

Besides this, we have studied the special function and significance of impulse vibration signal in the gear case's malfunction diagnose.

承、齿轮、轴系三类零件各自的故障特征信号，同时研究冲击振动信号在齿轮箱故障诊断中的特殊作用和意义。

The simulation signal and experimental results show that this method can effectively diagnosis the faults of the gearbox.

通过仿真信号和对齿轮磨损故障实验信号的分析，表明该方法能有效地诊断齿轮的故障。

Company Profile Beijing Xinyu win equipment limited liability company operating mainly in the production and domestic and international advanced testing equipment, instrumentation, and diagnostic tools, as well as introduce advanced test, measurement of new technology for operating purposes. A: electrical fire, building fire detection and public safety facilities, equipment detectors B: lightning protection, lightning protection device detection equipment, mine detection device safety box C: Fire Fire Safety Inspection and Testing equipment, and investigate the cause of the fire equipment, police station fire alarm Services and equipment D: fire inspection and fire investigation equipment boxes, fire investigation kits, fire detection equipment to determine the scene Product E: Fire Engineering Detect boxes, cartons Detect building fire service installations, fire detection electrical box F: Airport Fire fire inspection equipment, subway Fire Safety Detect Box G: boilers, pressure vessels and special equipment, elevator equipment Detect H: Victoria seized power telecommunications equipment boxes, mechanical state patrol boxes I: Detect safety boxes, traffic accident investigation boxes, property management Detected me J: Public environmental hygiene Detect boxes, boxes of food safety at the scene detection, occupational health care at the scene Detect boxes, cartons Detect Radiological Protection at the scene, the situation of sanitation and disinfection Detected me, health production supervisor at the scene seized me K: Ultrasonic leak detector, ultrasonic spectrum analyzer, ultrasonic full-function fault detection system L: fire using infra-red thermal imaging, infrared imaging system for industrial use, the security-type infra-red thermal imaging M: Energy Conservation Supervision and Testing Instruments instrument N: Private Product: 3 1/2- 8 1 / 2 handheld / desktop Digital Multimeter, cross-DC clamp level pressure ammeter, temperature gauges, tachometer, digital megohm table, grounding resistance tester, desktop multimeter, digital frequency meter smart, figure synthesis / function signal generator, desktop digital electric bridge, oscilloscopes, infrared thermometer, vibrometer, digital DC regulated power supply, 5 1 / 2 hand-held multi-function calibrator field process instrumentation. O: agent Products:, infrared thermometer, infrared, ultrasonic full-function fault leakage / discharge detection device, flammable / toxic gas detector, harmonic power quality analyzer, portable ultrasonic flowmeter, insulation / Ground Resistance Tester, temperature, current / voltage, the process of signal, thermal resistance / thermocouple, pressure, loop calibrator, such as electronics, telecommunications, electricity, petroleum chemical industry, safety inspection, steel smelting, public environmental protection, fire detection Secret rescue, fire detection equipment, special equipment testing, military field equipment dedicated monitoring equipment and tools.

公司简介北京新宇胜利仪器有限责任公司主要以生产和经营国际，国内先进的检测仪器仪表和设备诊断工具以及介绍先进的测试，测量新技术为经营宗旨。A：消防电气、建筑消防设施检测和公共安全侦检仪器设备B：防雷、避雷装置检测仪器设备、防雷装置安全检测箱C：消防防火监督检测装备、火灾原因调查装备、公安派出所消防警务装备D：防火检查与火灾勘查仪器箱、火灾勘查工具箱、消防产品现场判定检测仪器E：消防工程检测箱、建筑消防设施检测箱、消防电气检测箱F：机场消防防火检查仪器设备、地铁消防安全检测箱G：锅炉、压力容器和特种设备、电梯检测仪器H：电信电源维检仪器箱、机械状态巡检箱I：交通安全检测箱、交通事故勘查箱、物业管理检测箱J：公共卫生环境检测箱、食品安全现场检测箱、职业健康监护现场检测箱、放射防护现场检测箱、卫生消毒状况检测箱、健康品生产现场监检箱K：超声波泄漏检测仪、超声波频谱分析仪、超声波全功能故障检测系统L：消防用红外热像仪、工业用红外热像仪、本安型红外热像仪M：节能监督检测仪器仪表工具N ：自有产品：3 1/2-8 1/2位手持/台式数字多用表，交、直流钳形高低、压电流表，温度仪表，转速表，数字兆欧表，接地电阻测试仪，台式多用表，数字智能频率计，数字合成/函数信号发生器，台式数字电桥，示波器，红外测温仪，测振仪，数字直流稳压电源，5 1/2位手持式多功能现场过程仪表校验仪。O：代理产品：，红外测温仪，红外热像仪，超声波全功能故障泄漏/放电侦测仪，可燃/有毒气体检测仪，电力质量谐波分析仪，便携式超声波流量计，绝缘/接地电阻测试仪，温度、电流/电压、过程信号、热电阻/热电偶、压力、回路校验仪等电子、通讯、电力、石油化工、安全检查、钢冶、公共环保、消防特勤侦检救援、消防检测设备、特种设备检测、军事领域的专用仪器监测设备与工具。

Aiming at difficulty of weak impactive roller bearing fault feature extraction of composite faults, a demodulation method based on the second generation wavelet and the empirical mode decomposition is proposed to separate the coupling features of a composite fault and to extract the fault feature of a roller bearing.

针对复合故障中滚动轴承微弱冲击性故障特征难于提取的问题，提出基于第二代小波和EMD的解调方法，进行复合故障的耦合特征分离和轴承损伤性故障微弱信号的特征提取研究。

In this thesis, the method of combining neural network with Expert System has been used for fault diagnosis in ore grinding firstly, while wavelet analysis is also used for signal process. Ore Grinding Intelligent Fault Diagnosis Consult System is developed.

本文根据磨矿生产过程中的故障特点，首次将人工神经网络与专家系统相结合的思想和方法运用于磨矿生产过程中的故障诊断和故障处理咨询，并把小波分析技术应用于信号的处理，并开发了磨矿智能故障诊断咨询系统，发展了磨矿系统的故障诊断理论。

The treating plant mainly has the following input signal in this set of control system: Che Neinei was mad that outside the temperature signal, the vehicle the external Qi temperature signal, the water temperature temperature signal, the air blower feedback signal, the mix air throttle feedback signal, the back light lamp signal and so on, the output device is the VFD fluorescence vacuum display monitor, the control device is mainly on control panel''s pressed key, realizes the plan acts according to the vehicle speed, Each temperature value''s situation comes the intelligent control air-conditioning system various air throttles electrical machinery and compressor''s work, causes in compartment''s temperature basis hypothesis temperature in the physical sensation comfortable scope, simultaneously controls the blowing through the air throttle electrical machinery''s movement the direction, the cold hot blast proportion, the automatic control, forces to defrost, the inside and outside circulates the wind transformation and the breakdown situation demonstration is the concrete function which this set of control system can realize.

在这套控制系统中处理装置主要有以下输入信号：车内内气温度信号、车外外气温度信号、水温温度信号、风机反馈信号、混合风门反馈信号、背光灯信号等，输出装置为VFD荧光真空显示屏，控制装置主要是控制面板上的按键，实现的方案是根据车速，各个温度值的情况来智能控制空调系统各风门电机和压缩机的工作，使得车厢内的温度根据设定温度在人体感觉舒适的范围之内，同时通过风门电机的动作来控制吹风的方向、冷热风的比例，自动控制，强制除霜，内外循环风的转换和故障情况的显示都是这套控制系统所能够实现的具体功能。

After observing the physical course of the single-phase grounding of transmission line, analyzing by the wavelet transformation the transient signals sampled during the fault period from the moment that single-phased grounding occurs to the moment that line breakers work, we can distinguish temporary fault from permanent one through the wave form.

本文提出了一种不同于现有故障类型判别的思路，通过考察线路单相接地故障的物理过程，利用小波变换理论分析处理线路单相瞬时性故障和永久性故障在故障发生后断路器开断前时间段的暂态信号，通过波形识别区分两种故障。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。