动态信号分析仪原理

某水电站机组动平衡及振动试验介绍发表时间：2020-12-22T07:09:50.301Z 来源：《云南电业》2020年7期作者：何忠华[导读] 本文介绍了某水电站机组动平衡及振动试验的目的、内容、方法，并提出试验安全措施及注意事项，为同类试验提供参考。

何忠华（湖南黑麋峰抽水蓄能有限公司湖南长沙 410213）摘要：本文介绍了某水电站机组动平衡及振动试验的目的、内容、方法，并提出试验安全措施及注意事项，为同类试验提供参考。

关键词：动平衡试验；振动试验1 试验目的机组良好的稳定性是水轮发电机组安全、经济运行的重要保证。

如果机组长期处于异常振动状态下运行将导致机械结构和部件的疲劳与破坏；定子铁心振动将破坏定子线圈的绝缘，引起绕组接地和短路等电气事故；过大的轴系振动会产生很大的径向动态力直接作用于导轴承，改变轴承间歇并加剧轴系的振动，使轴颈和导轴承遭到损坏，振动过大将影响机组的安全稳定运行，减少机组运行寿命。

通过做稳定性试验，分析各工况下质量不平衡、磁力不平衡、水力不平衡等因素对机组稳定性的影响；确定机组可能存在的振动区域。

为保证水轮发电机组的安全稳定运行，需对机组振动、摆度进行全面的测试分析及动平衡试验。

2 试验项目及内容 2.1额定空转试验升速并记录起机过程和额定空转试验。

根据额定空转试验情况，分析和评价转子的质量平衡状态。

2.2升流升压试验升流升压试验工况： 100％空载额定电流； 100％空载额定电压。

根据变励磁试验情况，分析和评价转子的磁力平衡状态。

2.3变负荷试验变负荷试验工况：180MW至300MW。

根据带负荷试验情况，分析和评价机组的运行稳定性，判断和确定机组可能存在的振动区域。

2.4甩负荷试验甩负荷试验工况：25%、50%、75%、100%额定负荷等工况。

根据甩负荷试验情况，分析和评价机组在非正常工况下（甩负荷），判断和预估机组的摆度和振动水平。

2.5抽水及水泵突然断电试验机组在水泵额定抽水工况下，水泵突然断电试验。

动态信号分析仪安全操作及保养规程动态信号分析仪是一种被广泛应用于各类工业生产领域的高科技仪器设备，它能够通过采集物体振动的动态信号并将其进行分析，从而帮助用户检测出物体内部的缺陷和故障，辅助用户制定有效的维修和保养方案。

为了更好地保证动态信号分析仪的正常使用和延长其使用寿命，以下将为您介绍它的安全操作和保养规程。

安全操作1. 操作员应具备一定的技术知识在进行动态信号分析仪的操作时，操作员应具备一定的技术知识，了解其原理和工作方式。

如果是初次操作，操作员应事先进行相关的培训和指导，跟随有经验的人员参与实操，熟悉仪器的使用方法和操作流程，确保技能水平和安全意识符合要求。

2. 正确连接电源和信号线在接入电源前，应检查电源和电压是否符合动态信号分析仪的电气参数要求，避免供电不足或过大，导致设备损坏。

接线时应注意线路接法是否正确，电源线和信号线要分别接在相应的接口上，以免设备受到电击或触电事故发生。

3. 使用过程中应注意安全防护措施操作过程中应佩戴防静电手套，并注意保护设备不受损伤，设备外壳应经常擦拭，避免受到外界污染。

保持操作现场清洁、整洁、安全，避免绊倒、滑倒等意外事故的发生。

在设备运转时，应保持身体稳定，防止摇摆和跌倒。

4. 关闭设备前，应注意操作步骤在关闭设备之前，应先关闭设备的软件，在断开电源之前，给设备一定的停机时间，保证设备内的部件安全、准确、稳定地停止运转，然后再关掉电源，避免短路和电流浪涌对设备的损害。

保养规程1. 定期清理设备动态信号分析仪的频率转换器、计算机等部件上会积累灰尘、油污和异物，影响设备正常工作，因此需要定期进行清洗。

清洁时应避免使用含有酸性、碱性、易挥发的化学药品，轻微的灰尘可以用柔软的毛刷或清洁布擦拭。

2. 注意电源接口的保养动态信号分析仪的电源口很容易受到污染，长时间不进行干净的保养和维护，会使电源接口损坏，该接口损坏后会影响设备使用，因此要定期进行检查和清洁。

3. 驱动器的保养动态信号分析仪中的驱动器是重要部件，如果不注意保养就会出现摩擦、磨损等情况。

动态信号分析仪的特点都有哪些呢动态信号分析仪是用于测量和分析机械和电子设备中的振动、震动和噪音等动态信号的精密仪器。

它具有高精度、高速度、高灵敏度和高可靠性等特点。

本文将对动态信号分析仪的特点进行详细介绍。

1. 高精度动态信号分析仪采用了高精度、高速度的模数转换技术，可以对微弱的信号进行高精度的测量和分析。

它能够在高噪声环境下进行信号采集和分析，提高数据的可靠性和准确性。

同时，其具有高辨析度和高灵敏度，能够准确地检测和诊断机械设备中的故障和缺陷。

2. 高速度动态信号分析仪具备高速度的数据采集和处理能力，可以在短时间内采集和处理大量数据。

其采用了实时监测技术，能够对设备运行状态进行持续监测和分析，及时捕捉故障信号，快速反应和解决设备故障，有效提高设备的可靠性和安全性。

3. 多功能性动态信号分析仪具有多种功能，可以进行振动分析、频谱分析、时间频率分析、谐波分析、共振测试、幅值分析、相位分析等多项功能。

它能够满足不同范围的检测要求，适用于各种机械和电子设备中的振动、震动和噪音分析。

4. 易于操作动态信号分析仪采用了人性化的操作界面和简便的操作方式，可以快速上手操作。

同时，其具有自动化测试和诊断功能，能够自动识别和分析故障信号，提高工作效率和准确性。

此外，动态信号分析仪还支持远程监控和控制，使得远程工程师可以通过互联网等远程通信手段对设备进行监控和诊断。

5. 高可靠性动态信号分析仪采用了高品质的元器件和制造工艺，具有高可靠性和长寿命。

其外壳采用高强度、防水、防尘、防腐蚀的材料，能够在恶劣环境下工作。

同时，其具有自诊断和自校准功能，能够保证设备的稳定性和准确性。

6. 可拓展性动态信号分析仪具有良好的可拓展性，可以与其他测试设备、数字信号处理器等设备相连接，实现更为精细的检测和分析。

其支持多种接口和通讯协议，具有较高的兼容性和可扩展性。

综上所述，动态信号分析仪具有高精度、高速度、高灵敏度、高可靠性、多功能性、易于操作和可拓展性等多项特点，是工业领域中进行振动、震动和噪音分析的理想设备之一。

动态信号分析仪的特点都有哪些呢分析仪操作规程动态信号分析仪是一款便携式多通道并行同步采样的动态信号测试分析系统；包含动态信号测试分析系统所需的直流电压放大器、抗混滤波器、A/D转换器、DSP实动态信号分析仪是一款便携式多通道并行同步采样的动态信号测试分析系统；包含动态信号测试分析系统所需的直流电压放大器、抗混滤波器、A/D转换器、DSP实时信号处理系统、锂电池组及采样控制和计算机通讯的全部硬件；以及操作简便的管理和分析软件，用于多通道电压、电荷、ICP 传感器及4～20mA变送器的输出信号的采集和分析。

特点：高度便携：利用计算机的1394接口实时进行数据传送, 实现了热拔插和即插即用；并且较大程度上满足了对便携式仪器和采样速度的要求,测试系统不仅可在实验室使用,也可方便地应用于生产现场；高度集成：模块化设计的硬件，每个测量机箱可插入两个4通道数采和1通道转速测量模块；每台计算机可控制8通道数采和2通道转速同步并行采样，满足了多通道、高精度、高速动态信号的测量需求；每通道包含独立的DSP实时信号处理系统：可选择的模拟滤波 + DSP实时数字滤波，构成高性能抗混滤波器，还可根据转速周期,实时完成连续的整周期采样；每通道独立的16位A／D转换器：实现了多通道并行同步采样，通道间无串扰影响及采样速率不受通道数的限制，大大提高了系统的抗干扰能力；准确的采样速率：先进的DDS数字频率合成技术产生高精度、高稳定度的采样脉冲，保证了多通道采样速率的同步性、准确性和稳定性；数字磁带机信号记录功能：利用计算机海量的存储硬盘,长时间实时、无间断记录多通道信号；DMA方式传送数据：测试数据通过嵌入式实时操作环境下,DMA方式实时传送，保证了数据传送的高速、稳定、不漏码；先进的工艺：多层线路板,全贴片工艺,大大提高了硬件的可靠性和抗干扰能力；供电：智能化管理的可充电锂电池组供电；完全便携：防潮、防振设计，工作温度范围可拓宽至-10℃～60℃；信号适调器：配套各种可程控的信号适调器(包括电压适调模块、应变适调模块、电荷适调模块、双恒流源应变适调模块)；不仅具有极强的抗干扰能力,而且由于参数由数采统一控制,系统的单位量纲实现了“傻瓜”设置。

网络分析仪培训资料在当今的电子通信领域，网络分析仪作为一种重要的测试测量仪器，发挥着不可或缺的作用。

无论是研发新型电子设备，还是对现有网络进行维护和优化，都离不开网络分析仪的精准测量和分析。

为了帮助大家更好地掌握网络分析仪的使用方法和技术，本文将对其进行详细的介绍和培训。

一、网络分析仪的基本原理网络分析仪是一种用于测量网络参数的仪器，它可以测量诸如反射系数、传输系数、阻抗、增益、相位等参数。

其基本原理是通过向被测网络施加激励信号，并测量响应信号，然后通过计算和分析得到网络的各种参数。

网络分析仪通常由信号源、接收机、测试装置和数据分析处理单元组成。

信号源产生特定频率和功率的测试信号，接收机用于测量被测网络的响应信号。

测试装置则将测试信号和响应信号进行适当的处理和转换，以便于数据分析处理单元进行计算和分析。

二、网络分析仪的类型根据不同的应用需求和测量精度，网络分析仪可以分为多种类型。

常见的有标量网络分析仪和矢量网络分析仪。

标量网络分析仪主要测量信号的幅度特性，如衰减和增益等。

它相对简单，价格较低，但无法提供相位信息。

矢量网络分析仪则不仅可以测量信号的幅度，还可以测量相位信息，能够更全面地描述被测网络的特性。

但矢量网络分析仪通常价格较高，操作也相对复杂。

此外，还有手持式网络分析仪和台式网络分析仪之分。

手持式网络分析仪便于携带，适用于现场测试；台式网络分析仪则精度更高，功能更强大，适用于实验室和研发环境。

三、网络分析仪的主要技术指标在选择和使用网络分析仪时，需要了解一些重要的技术指标，以确保其能够满足测量需求。

1、频率范围：网络分析仪能够测量的频率范围，这是根据具体的应用需求来选择的。

2、测量精度：包括幅度精度和相位精度，精度越高，测量结果越准确。

3、动态范围：表示网络分析仪能够测量的最大信号和最小信号之间的比值。

4、分辨率：指能够分辨的最小频率间隔和幅度变化。

四、网络分析仪的操作步骤1、连接设备首先，将网络分析仪与被测网络正确连接。

振动测量仪器知识一、概述（一)用途振动测量仪器是一种测量物体机械振动的测量仪器.测量的基本量是振动的加速度、速度和位移等,可以测量机械振动和冲击振动的有效值、峰值等，频率范围从零点几赫兹~几千赫兹。

外部联接或内部设置带通滤波器，可以进行噪声的频谱分析.随着电子技术尤其是大规模集成电路和计算机技术的发展,振动测量仪器的许多功能都通过数字信号处理技术代替模拟电路来实现。

这不仅使得电路更加简化,动态范围更宽,而且功能和稳定性也大大提高，尤其是可以实现实时频谱分析，使振动测量仪器的用途更加广泛。

（二）分类与特点振动测量仪器按功能来分:分为工作测振仪、振动烈度计、振动分析仪、激振器(或振动台）、振动激励控制器、振动校准器测量机械振动，具有频谱分析功能的称为频谱分析仪,具有实时频谱分析功能的称为实时频谱分析仪或实时信号分析仪，具有多路测量功能的多通道声学分析仪。

振动测量仪器按采用技术来分：分为模拟振动计、数字化振动计和多通道实时信号分析仪。

振动测量仪器按测量对象来分：分为测量机械振动的通用振动计,测量振动对人体影响的人体（响应）振动计、测量环境振动的环境振动仪和振动激励控制器。

●工作测振仪特点通常是手持式，操作简单、价格便宜，只测量并显示振动的加速度、速度和位移等。

以前用电表显示测量值,现在都是用数字显示。

通常不带数据储存和打印功能,用于一般振动测量。

振动烈度计是指专用于测量振动烈度（10 Hz～1000 Hz频率范围的速度有效值）的振动测量仪器。

●实时信号分析仪特点实时信号分析仪是一种数字频率分析仪，它采用数字信号处理技术代替模拟电路来进行振动的测量和频谱分析。

当模拟信号通过采样及A/D转换成数字信号后,进入数字计算机进行运算,实现各种测量和分析功能。

实时信号分析仪可同时测量加速度、速度和位移，均方根、峰值（Peak）、峰—峰值（Peak—Peak)检波可并行工作。

不仅分析速度快，而且也能分析瞬态信号，在显示器上实时显示出频谱变化，还可将分析得到的数据输出并记录下来.●动态信号测试和分析系统特点包含多路高性能数据采集、多功能信号发生、基本信号分析，还可以选择高级信号分析；以及模态分析、故障分析等应用。

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Build on that capabilitywith options that either add newmeasurement capability or enhanceall measurement modes.Versatile two- or four-channel high-performanceFFT-based spectrum/network analyzer122 µHz to 102.4 kHz 16-bit ADCKey SpecificationsFrequency Range:102.4 kHz 1 channel51.2 kHz 2 channel25.6 kHz 4 channelDynamic Range:90 dB typicalAccuracy:±0.15 dBChannel Match:±0.04 dB and ±0.5 degreesReal-time Bandwidth: 25.6 kHz/1 channelResolution:100, 200, 400 & 800 linesTime Capture:0.8 to >6 Msamples (option UFC)Source Types:Random, Burst random,Periodic chirp, Burst chirp, Pinknoise, Sine, Swept-Sine (option1D2),Arbitrary (option 1D4)The Agilent 35670Ashown with fourchannels (option AY6)AY6Add Two Channels (Four Total)1D0Computed Order Tracking1D1Real-Time OctaveMeasurementsUK4Microphone Adapter andPower Supply1D2Swept-Sine Measurements1D3Curve Fit and Synthesis1D4Arbitrary Waveform Source1C2Agilent Instrument BASIC1001D0 - 1D4 bundle2Agilent 35670ADynamic Signal AnalyzerShown with option AY6 - Add Two ChannelsInput Channels•Analog A-weighted fil-ters (switchable)•Transducer sensitivity input•Engineering units: g, m/s 2, m/s, m, in/s 2, in/s, in, mil, kg, dyn, lb,N, and pascals •Built-in 4 mAconstant current power supply(17 cm) display Display area is not compromised by portabilityPrecisionMeasurements •16-bit ADC•±0.15 dB spectrum amplitude accuracy •±0.04 dB, ±0.5degrees channel match (full scale)•90 dB dynamic range (typical)•130 dB dynamic range with swept-sine (option 1D2)•Up/Down autorange •Up only autorangeMath FunctionsPowerful math and data editing functions to quickly modify meas-urement results. (Curve fit and frequency responsesynthesis available with option 1D3.)Built-In 3.5 inch Flexible Disk Drive Store instrument states,programs, time captured data, waterfall data,trace data, limits, math functions, data tables,and curve fit/synthesis tables.Supported disk formats are HP-LIF andMS-DOS. Internal RAM may also beformatted as storage disk.Powerful Markers Extract information from measurement data with trace and special markers:•Individual Trace •Coupled Trace•Absolute or Relative •Peak Search •Harmonic •Band•Sideband Power •Waterfall•Time Parameter •Frequency and DampingVersatileMeasurement Modes Standard and optionalmeasurement modes include:•FFT Analysis•Real-Time Octave Analysis (option 1D1)•Order Analysis (option 1D0)•Swept-Sine (option 1D2)•Correlation Analysis •Histogram Analysis •Time CaptureAll measurement options may be retrofitted.RPM Display Read RPM in any measurement modeAgilent Instrument BASIC (Option 1C2)Develop a customuser-interface, integrate several instruments and peripherals into a system using the 35670A as the system controller, or simply automate measurements.Online Help Applications oriented help is just a few keystrokes away.Source Types •Random Noise •Burst Random Noise •Periodic Chirp •Burst Chirp •Pink Noise •Fixed Sine •Arbitrary Waveform Source (Option 1D4)•Swept-Sine Source (Option 1D2) Note: The source is located on the front panel of a standard two-channel 35670A.GPIB ConnectorIntegrate the35670A with otherinstruments andperipherals forsystem operationor printing/plotting.System controllerfor GPIB (IEEE-488.1and 488.2) compati-ble instrumentationvia AgilentInstrument BASIC(option 1C2).Provides direct con-trol of GPIB printers,plotters,and HP SS80 diskdrives.Serial PortPlot to HP-GLplotters or print toHP-GL and rasterprinters.Parallel PortPlot to HP-GL plottersor print to HP-GL andraster printers.DC PowerAccepts 12 to 28 voltsdc (nominal). Use the35250A power cable forDC power source con-nection, or the 35251Apower cable with ciga-rette-lighter adapter.Low Noise FanFan may be turnedoff for acousticapplications.Running speed dependsonambienttemperature.External MonitorDrive a VGA monitorfor remote viewing bylarge groups.Tachometer(42 Volt Peak Max)No external signalconditioning hardwarerequired. Readsfrequency (RPM) onselected levelsbetween ±20 Volts.External Trigger(42 Volt Peak Max)No external signalconditioning hardwarerequired. Triggers onselected levelbetween ±10 Volts.KeyboardUse a standard PCkeyboard to title data,edit Agilent InstrumentBASIC programs,or to operate theinstrument.Power SelectSwitch betweenAC and DC powersources withoutinterrupting instru-ment operation.AC PowerUniversal powersupply will operatewith anycombination ofvoltage between100 and 240 VACand line frequencybetween 47 and440 Hz. Themaximum powerrequirement is350 VA.34Laboratory-qualitymeasurements in the fieldObtain all of the performance of your bench-top analyzer in a portable instrument.Ease-of-usePortability, versatility, and perfor-mance are valued attributes, but to be really valuable an instrument must also be easy to use. The 35670A has a friendly front panel,plus online help that’s alwaysavailable to answer your questions.An interactive measurement state lets you configure the instrumentsetup from a single display.Two spectrums of road induced vibration measured at different speeds are comparedusing the front/back modeof the Agilent 35670A.FFT-based spectrum analyzers, such as the 35670A, are ideal for measuring the spectra of low-frequency signals like speech or mechanical vibration. Transient components,usually missed with swept-frequency analyzers, are easily measured and displayed at speeds fast enough to follow trends. The 35670A has both the performance and features required to take full advantage of this technology.16-Bits for High PerformanceWith a 16-bit ADC (90 dB typical dynamic range) and a real-time bandwidth of 25.6 kHz, you can be sure nothing will be missed. Resolve signals using 100 to 1600 lines resolution, or for really close-in analysis, use frequency zoom to resolve signals with up to 61 µHz resolution. Use time or RPM arming to develop waterfalls of sequential vibration spectra for trend analysis or for an overview of device vibration.Power and Linear SpectrumsMatch your spectrum measurement mode to the signal being tested. Use linear spectrum analysis to measure both the amplitude and phase of periodic signals such as the spectra of rotating machinery.Power spectrum analysis is provided for averaging nonrepetitive signals.AveragingVarious averaging modes let you further refine spectrum analysis measurements. Time averaging extracts repetitive signals out of the noise while rms averagingreduces the noise to its mean value.Exponential averaging, available for both time and rms averaging, is useful for reducing the noise while following changing signals—tracking the resonance shifts in a fatiguing structure for example.Spectrum Analysis5Time DomainUse your spectrum analyzer as alow-frequency oscilloscope or view signals in the time and frequency domains simultaneously. (Note: anti-alias filters can be switched off.) Special markers for time-domain data facilitate extraction of key control system performance parameters: overshoot, rise time,setting time, and delay time.Data TableUse a tabular format to keep track of key frequencies in the spectra of rotating machinery. The amplitude and frequency of the signal and a 16-character entry label field are listed for each selected point.Automatic Units ConversionDisplay vibration data in the units of your choice. Select g, m/sec 2, in/sec 2, m/s, in/s, m, mil, inch, Kg, lb, N, dyn,or pascals as appropriate for your application.The instrument automatically converts frequency-domain data from specified input transducer units to the units you select for display. For example, accelerometer data is automatically converted and displayed as mils when mils are selected. Of course, dB, dBV, dBm and volts are available for electrical applications.MarkersMarkers streamline analysis by helping you select and display specific data. Marker functions include marker to peak, next right peak, and coupled markers for selecting points in multiple data displays. Markers readouts are absolute or relative to your selected reference.Special MarkersThree special marker functions facilitate analysis of your spectral data. Sideband markers aid analysis of modulation signals. Use thisfunction to quickly locate sidebands in the complicated spectra of rotating machines. A band-power marker reads the total power in a selected band of frequencies and a total harmonic distortion marker lets you calculate total harmonic distortion without including the effects of noise.Measurement results at key frequencies can be labeled and listed using data table.Harmonic markers are used to calculate the THD of a signal without including the effects of noise.Simultaneousdisplay of frequency and time domain data facilitates analysis of gear mesh vibration.6The 35670A has the flexibility to make measurements of both electrical networks and mechanical devices. FFT-based network analysis is fast enough to allow real-time adjustments of circuit parameters while the swept-sine option provides exacting measurements over more than six frequency decades, and a 130 dB dynamic range.SourceSelect the optimum stimulus for each application—random noise,periodic chirp, pink noise, fixed sine, burst random, and burst chirp.For zoomed network analysismeasurements, the source is band-translated to match the zoom span at frequencies up to 51.2 kHz. An optional arbitrary source lets you test your product using real-world signals. A ±10 Volt DC source offset facilitates tests of control systems.Impact TestingForce and exponential windows allow impact testing for modal and structural analysis. Quality measurements are ensured using preview and accept/reject during averaging. A 4 mA constant current transducer power supply is built-in for true portability.Frequency ResponseMeasurementsLimits are used for go/no go testing in production. The response of an accelerometer is being checked inthis example.Characteristics of a selected resonance are automatically calculated from an impact measurement using the frequency and damping marker.LimitsTest network measurements against preset limits. Up to 800 separate line segments are available for setting upper and lower limits.Limits are also used for testing spectrum measurements.Four Channels (option AY6)Test up to three devicessimultaneously with a four-channel 35670A. Channel one is the common reference channel and two, three,and four are the response channels.Alternatively, select channels one and three as reference channels for two totally independent network measurements. See option AY6 description for more information.7MarkersA frequency and damping marker provides the resonant frequency and the damping ratio of single-degree-of-freedom frequency response measurements.Gain and phase margin markers extract key frequency-domain stability data from frequency response measurements of control systems.Signal Injection for Control LoopsUse one of three Agilent signal injection devices for testing control loops. The 35280A summing junction provides convenient DC to 1 MHz signal injection for most control loops. Use the 35281A clip-on transformer when it is not possible to temporarily open the loop, or use the 35282A signal injection transformer when secondary voltages are up to 600 Vpk.Capture transient events or time histories for complete analysis in any measurement mode (except swept-sine). Use either the entire time-capture record or a selected region of interest for repetitive analysis in the FFT, octave, order track, correlation or histogram instrument modes.Standard 16 Mbytes of memory for deep time-capture capability.Time CaptureAn interval of time-capture data has been selected for analysis in the octave mode.8Taking the measurement is only half the job. Raw measurement data must be stored, recalled, printed,plotted, integrated with other data for analysis, and reported. The 35670A has a variety of tools to help you finish the job.Enhanced Data Transfer Utilities for PCsStandard Data Format (SDF)Utilities, provided with the 35670A,allow you to easily move data from the instrument to wherever it’s needed:Using Measurement ResultsSelf-contained—no ratio synthesizer or tracking filter required Order Maps Order Tracking RPM or Time Trigger Display RPM ProfileTrack Up to Five Orders/Channel Up to 200 Orders Composite Power RPM MeasurementsOrder tracking facilitates evaluation of spectra from rotating machines by displaying vibration data as a function of orders (or harmonics)rather than frequency.All measurement spectra is normalized to the shaft RPM.Now you can have order tracking without compromising portability.Traditional analog order tracking techniques require external tracking filters and ratio synthesizers. With Agilent’s computed order tracking algorithm, external hardware is gone.Because order tracking isimplemented in the software, data is more precise and your job is easier. Compared to traditional analogorder tracking techniques, computed order tracking offers:Computed Order Tracking(Option 1D0)The slice marker feature is used to select and display an order or suborder from an order map.•For general digital signal processingand filtering , translate data files to formats compatible with MATLAB and MATRIX X , Data Set 58, or ASCII for use in popular spreadsheets.•For specific applications, useapplication software that reads SDF files directly, such as STARModal and STARAcoustics from SMS and CADA-PC from LMS.•Transfer data to and from the 35665A, 3566A, 3567A, 3562A,3563A.•Use the viewdata feature to display data on your PC or to convert to the HP-GL format for transfer to Microsoft’s Word for Windows or Lotus’ AMI PRO word processing software.•Convert between HP-LIF and MS-DOS ®formats.•Read data files into a program.Documented ResultsThe 35670A supports a variety of GPIB, serial and parallel printers and plotters for direct hardcopy output.The internal 3.5 inch flexible disk drive stores data, instrument states,HP-GL plots and Agilent Instrument BASIC programs in HP-LIF or MS-DOS formats for future recall or use on HP workstations or a personal computer.Entire display screens can be import-ed directly into your word processing program by plotting HP-GL files to your named DOS file. HP-GL files are interpreted and displayed directly by Microsoft’s Word for Windows and AMI PRO from Lotus Development Corp.•Improved dynamic range athigh orders•More accurate tracking of rapidly changing shaft speeds•Accurate RPM labeled spectra with exact RPM trigger arm •Wide 64:1 ratio of start to stop RPMsOrder MapUse order maps for an overview of vibration data versus RPM or time.Display the amplitude profile of individual orders and suborders using the slice marker function. Alternatively, use trace markers to select individual traces for display.MS-DOS and Microsoft are U.S. registered trademarks of Microsoft Corp.9Order TrackingMeasure only the data you need.Order tracking lets you measure the amplitude profile of up to five orders plus composite power simultaneously on each channel. Up to four orders or three orders and composite power can be dis-played simultaneously.RPM ProfileUse RPM profile to monitor the variation of RPM with time during order tracking measurements.Composite PowerComposite power provides the total signal power in a selected channel as a function of RPM.Run-Up and Run-Down MeasurementsRun-up and run-down measurements of any order are made using external trigger as the phase reference.Display the results as bode or polar plots; both are available.Markers allow convenient notation of important shaft speeds.OrbitsObtain oscilloscope-quality orbit measurements with your 35670A.Unlike traditional FFT analyzers, the 35670A equipped with computed order tracking displays a selected number of loops (usually one) as theshaft RPM is varied.Order tracking is used to simultaneously display up to four orders or a combination of orders,composite power and RPM profile.Markers are used to annotate shaft speeds at selected points in a run-up measurement.Oscilloscope-quality orbit diagrams mean you carry only one instrument onto the shop floor.10Real-Time Third Octave to 40 kHz ANSI S1.11-1986 Filter Shapes Microphone Inputs and Power A-Weighted Overall SPLRPM or Time-Triggered Waterfalls Eliminate the expense and inconvenience of multiple instruments in the field. With optional real-time octave analysis,and the optional microphoneadapter and power supply, you have a complete real-time octave analyzer added to your 35670A at a fraction of the cost of a second instrument.Now you can carry both your FFT and real-time octave analyzers to the job site in the same hand.Real-Time 1/3-Octave to 40 kHz on One ChannelWith two input channels of1/3-octave real-time measurements at frequencies up to 20 kHz, you get all of the information you’ll ever need to understand the noise performance of your product. No misinterpreted measurementsbecause transient components were missed. When the frequency range requirement is 10 kHz or less, use four channels to characterize spatial variations. For those exceptional circumstances, use 1/3-octave resolution at frequencies up to 40 kHz on a single channel.Resolutions of 1/1- and 1/12-octave are also available.Real-Time Octave Measurements (Option 1D1)Microphone Adapter and Power Supply (Option UK4)Overall sound pressure level and A-weighted sound pressure level can be displayed with the octave bands individually, together, or not at all.A fan-off mode lets you use the instrument in the sound field being measured.ANSI S1.11-1986All octave filters comply with filter shape standards ANSI S1.11-1986(Order 3, type 1-D), DIN 45651, and IEC 225-1966. An 80 dB dynamic range for the audio spectrumprovides the performance required by acousticians. Switchable analog A-weighting filters in the input channels comply fully with bothANSI S1.4-1983 and IEC 651-1979 Type 0.Advanced AnalysisUse waterfall displays of octave data for an overview of device noise versus time or RPM. Display individual frequency bands as a function of RPM or time using the slice marker function. Alternatively,use trace markers to select individual traces for display.A pink noise source is available for testing electro-acoustic devices.Sound LevelMeter MeasurementsPeak hold, impulse, fast, slow, and L eq are all provided with optional Real-time Octave Measurements. All measurements conform toIEC 651-1979 Type 0 - Impulse.Real-time 1/3-octave measurements at frequenciesup to 40 kHz.T his waterfall display of a flyover test can be analyzed trace-by-trace or by selecting time slices along thez-axis.Agilent 35670A with option UK4 microphone adapter and power supply.11130 dB Dynamic Range Logarithmic or Linear Sweeps “Auto” Frequency Resolution While FFT-based network analysis is fast and accurate, swept-sine measurements are a better choice when the device under test has a wide dynamic range or coversseveral decades of frequency e swept-sine measurements to extend the network measurement capabilities of the 35670A.Network Analysis Over a 130 dB RangeWith traditional swept-sine, the 35670A is optimally configured to measure each individual point in the frequency response. The result is a 130 dB dynamic range. With FFT-based network analysis, all frequency points are stimulated simultaneously and the instrument configures itself to measure thehighest amplitude response—thereby limiting the dynamic range.Characterize Nonlinear NetworksUse the auto-level feature to hold the input or output amplitude constant during a sweep. This provides the device response for a specific signal amplitude. With FFT-based network analysis using random noise, the randomamplitudes of the stimulus tend to “average out” the non-linearities and therefore does not capture thedependency of the response on the stimulus amplitude.Logarithmic SweepTest devices over more than six decades of frequency range using logarithmic sweep. In this mode,the frequency is automatically adjusted to provide the same resolution over each decade offrequency range. With FFT-network analysis, resolution is constant—not a problem when measuring over narrow frequency ranges.FlexibleMake the measurement your way.Independently select logarithmic or linear sweep, sweep up or down,automatic or manual sweep, and autoresolution.Automatic Frequency ResolutionUse autoresolution to obtain the fastest sweep possible without sacrificing accuracy. With autoresolution, the 35670Aautomatically adjusts the frequency step according to the deviceresponse. High rates of amplitude and phase change are matched with small frequency steps. Low rate-of-change regions are quickly measured with larger frequency steps.Test Multiple Devices SimultaneouslyIncrease throughput in production.Swept-sine measurements up to 25.6 kHz can be made on three devices simultaneously using swept-sine on a four-channel 35670A. Channel one is the common reference channel for these measurements.Alternatively, channels one and three can be designated asindependent reference channels for two totally independent swept-sine measurements.Swept-Sine Measurements(Option 1D2)The stability of a control loop is quickly character-ized using the gain and phase margin marker function.12Agilent Instrument BASIC (Option 1C2)Realize the advantages of using your instrument with a computer without sacrificing portability. Agilent Instrument BASIC provides the power of a computer inside your 35670A.Keystroke RecordingMost program development begins with keystroke recording. Each keystroke is automatically saved as a program instruction as you set up your measurement using the front panel. The recorded sequence can be used as the core of asophisticated program or run as an automatic sequence.Program entry and editing Program debugging Memory allocation Relation operators General math Graphics control Graphics plotting Graphics axes and labeling Program controlBinary functions Trigonometric operations String operations Logical operators GPIB control Mass storage Event initiated branching Clock and calendar General device I/O Array operationsOver 200 Agilent InstrumentBASIC Commands13Add Two Channels (Option AY6)Curve Fit and Synthesis (Option 1D3)51.2 kHz Frequency Range On One and Two Channels 25.6 kHz Frequency Range On Four ChannelsOne or Two Reference Channels Enhance your productivity by adding two additional inputchannels to your portable analyzer.Having four channels often means the difference between solving a problem in the field and having to schedule time in a test bay.Monitor four signals simultaneously or use channel one as thereference channel for up to three simultaneous cross-channel measurements. Two totally independent cross-channel measurements are made by selecting channels one and three as independent reference channels.All channels are sampled e triaxial measurements to simul-taneously characterize the motion of mechanical devices in three axes. For control systems, simultaneously measure several points in a single loop.20 Poles/20 Zeros Curve Fitter Frequency Response Synthesis Pole/Zero, Pole/Residue and Polynomial FormatUse curve fit and synthesis in the 35670A to take the guesswork out of your design process. The 20-pole and 20-zero multiple-degree-of-freedom curve fitter calculates a mathematical model of your system or circuit from measured frequency response data.The model can be expressed in pole/zero, pole/residue, orpolynomial format.Curve fit provides an exact mathematical model of your circuit or device.Transfer the circuit model to the synthesis function to experiment with design modifications. Add and delete poles and zeros, change gain factors, time delays, or frequency scaling, then synthesize the frequen-cy response from the modified model. Design modifications are tested without ever touching a sol-dering iron.14Standard 16 Mbytes RAMArbitrary Waveform Source (Option 1D4)Expand the data storage and time-capture capacity of your 35670A.Frequency or Time Domain Entry Data EditStore Up to Eight Arbitrary WaveformsTest your products using real-world signals. Measure a signal in either the time or frequency domain, then output it via the arbitrary waveform source. Use math functions and data edit to obtain precisely the output waveform you need. An arbitrary waveform may be output once or repeatedly.Standard source types can beoptimized for specific applications.For example, random noise can be shaped to improve the effectivedynamic range of your measurement.Alternatively, you can use data edit and math functions to create an arbitrary waveform.Use time capture as a digital tape recorder, then playback captured signals through the arbitrarywaveform source.Math functions are used to optimize a burst chirp signal for a frequency response measurement.Expand the data storage and time-capture capacity of your 35670A.Number of Spectra Stored Per ChannelStandard 16 MbyteFFT - 1 Channel 11400FFT- 2 Channels 2600FFT - 4 Channels 33001/3-Octave Spectra 448000Time Capture 1>6 MSamplesStandard 2 Mbyte Nonvolatile RAMUse the 2 Mbyte nonvolatile RAM in environments too harsh for the 3.5inch flexible disk drive. The memory functions as a high-speed disk for storage of the following information.•Instrument Setup States •Trace Data•User Math Definitions •Limit Data•Time Capture Buffers•Agilent Instrument BASIC Programs •Waterfall Display Data •Curve Fit/Synthesis Tables •Data TablesInformation stored in nonvolatile RAM is retained when the power is off.1Conditions: Preset with instrument mode switched to 1 channel.2Conditions: Preset3Conditions: Preset with instrument mode switched to 4 channels.4Conditions: Preset with instrument mode switched to octave.。

基于动态信号分析仪的便携式振动校准器的测量方法董平【摘要】It can also provide rapid calibration and inspection for those measuring, monitoring and recording system which be connected with. Based on the working principle of the portable vibration calibration and window function theory, taking dynamic signal analyzer (B&K PULSE 3560C) and standard accelerometer set (8305 / 2626) for detecting tool, using the experimental data as the evidence, this paper studies and sums up the effect degree of detection data’s accuracy influenced by the selection of window function during the process of the portable vibration calibrator detection.% 以便携式振动校准器工作原理和窗函数理论为基础，以B&K公司的PULSE 3560C动态信号分析仪和标准加速度计套组8305/2626为检测工具，以实验数据为佐证，研究并归纳出便携式振动校准器检测过程中窗函数的选择对检测数据准确性的影响程度【期刊名称】《上海计量测试》【年(卷),期】2012(000)004【总页数】3页(P10-12)【关键词】便携式振动校准器;动态信号分析仪;窗函数【作者】董平【作者单位】江苏省计量科学研究院【正文语种】中文0 引言振动校准器是一种便于携带并能用于测振仪和振动传感器（压电加速度探头）的校准激励器。