ROGA offers a wide range of data acquisition systems specifically designed for the monitoring and measurement of sound and vibration.
The RogaDAQ4 Set is a powerful package of 4-channel USB-based data acquisition hardware and comprehensive NVH-FFT software that enables accurate and efficient data analysis.
In combination with a standard notebook and a triaxial accelerometer, the RogaDAQ4 Set becomes a portable vibration analysis laboratory with integrated tools for signal processing and visualisation of sound and vibration data.
Technical Details
Analog Input | 4 channels DC / AC / IEPE |
|---|---|
Frequency range | DC Hz to 80 kHz |
Frequency range with IEPE | 0.3 Hz to 80 kHz |
Input voltage range | ±10 V / ±1 V selectable |
Input coupling | DC/AC/IEPE selectable |
Sensor supply | 4 mA @ 24 V |
Input impedance | 1MΩ, 20pF |
Overvoltage protection | ±40 V |
Anti-aliasing filter | 800 dB/octave |
Dynamic range | > 123 dB |
Amplitude accuracy | 0.10% |
Resolution | 24 bits |
Sample Rate in kHz | 8/16/24/32/48/96/192 |
Size | 80 x 118 x 64 mm |
Weight | 400 g |
Operating temperature range | 0 to 55 °C |
Power Supply | 5 Volt @ 1.5 Ampere |
NVH Analyzer RogaDAQ4 Getting Started
The NVH Analyzer and RogaDAQ4 are powerful tools for measuring and analyzing noise, vibration, and harshness in various applications. Rogá, the developer of these tools, provides a getting started presentation to help users better understand their capabilities and functions.
The presentation covers the basic features, setup requirements, and usage of the NVH Analyzer and RogaDAQ4. Additionally, the video demonstrates the steps involved in configuring and using these tools for successful data acquisition and analysis.
Whether it is for automotive, aerospace, or any other application that requires the measurement and analysis of noise, vibration, and harshness, the NVH Analyzer and RogaDAQ4 can provide users with accurate and detailed data to optimize their products and processes.
Rotor dynamics with NVH-FFT
Impulse hammer test with NVH-IMP
NVH-FFT | NVH-IMP | NVH-ODS Function Overview
REALTIME DATA PROCESSING | GRAPHICS AND VISUALISATION |
|---|---|
User interface | Configurable graph screens |
Time domain | Recorder (1 to 16 Ch, real-time autoscaling) Scope (trigger, persistence, envelope), Analog/digital meter, tabular display, overload indicator |
Multi domain | XY recorder (Lissajous), 2D graph, Orbit graph FRF plot (amplitude/phase/real/imaginary vs frequency) |
Application specific | FRF geometry, Modal circle, Rotor balancer, Harmonic FFT, Vector scope Auto-generating of displays with typical application setup |
DATA IMPORT | ASCII *.txt WAV *.wav MP3 *.mp3 Stiegele Datasystems MicroEdition, *.mdf TEAC TAFFmat Format, *.hdr, *.dat |
DATA EXPORT | ASCII *.txt Excel *.csv WAV *.wav |
FILTERING | |
IIR | Low pass/high pass/band pass/ 2nd to 6th order, Butterworth |
STATISTICS | |
Calculation base | Time based |
Types | RMS, Average, Peak-Peak |
Data range | Running, Triggered, Start-Stop |
REFERENCE CURVES | |
Types | time, value, dual-value, vector, XY, frequency domain with interpolation |
TIME DOMAIN | ANALYSIS |
Integration/Derivation | single/double with adjustable filter, automatic unit conversion (e.g. acceleration to velocity to displacement) FFT |
FFT ANALYSER | |
General | multiple independent FFT analyzers at the same time |
Amplitude types | amplitude FFT (Ampl, RMS, Power, PSD, RMS SD), Complex FFT (Real/Imag/Ampl/Phase) |
Windowing | Hanning / Hamming |
Window overlap | 0, 10, 25, 50, 66, 75, 90 % |
Triggered FFT | triggered time-range with pre- and post-trigger as input, auto calculation of window resolution, averaging of triggered FFT‘s, e.g. for bump – impulse hammer test application |
DC cut off | 0,5 Hz |
FFT block size | 26, 51, 101, 201, 401, 801, 1601, 3201, 6401, 12801, 25601 |
Acoustic weighting | A, B, C, Lin (Z) |
Octave | 1/3, type; Lin/A/B/C weighting, Lin/Pk avg with overlap |
Visualization | amplitude axis with real-time autoscaling: Lin/log/0dB/reference dB/Sound(A) |
Post processing | possible to add/change all calculations offline on the stored raw data |
Spectrum markers | Free |
ORDER TRACKING | |
Frequency source | Counter: optical tacho, proximity, pick-up probe (1 pulse/rev), optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero RPM channel: any analog speed channel, virtual (synthesized RPM channel, also in post-processing) Analog pulses: analog signal (e.g. 60-2) / analog tacho + angle sensor math |
Input Ch. for analysis | any analog input channel, e.g. IEPE accelerometer, microphone, etc… |
Visualization | 3D graph, Order and Frequency spectrum, Waterfall FFT real time extraction of single spectral lines of matrix Orbit plot, XY recorder, Bode plot, Nyquist plot of any order, any signal vs RPM |
Calculation criteria | Runup / Coast down / Both directions with RPM limits and Delta RPM and/or Delta Time |
Order FFT | from 8 to 256 orders, resolution from 1 to 1/64 |
Harmonics | extract overall RMS and amplitudes/phases/Real/Imag of selectable orders (from sub-orders e.g. 0.1x, 1x, 2x, 3x to max order) in Time domain & RPM domain |
Post processing | possible to add/change all calculations offline on the stored raw data |
Data export | Complex data (Real/Imag/Ampl/Phase) in any format, see Software Export section |
TORSIONAL VIBRATION | |
General | high precision rotational and torsional vibration and slippage measurement, by use of 2 rotary encoders |
Frequency source | optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero |
Angle accuracy | up to 0,00075° at 10 000 rpm |
Angle resolution | up to 0,06° at 10 000 rpm |
Features | Rotational DC filter (0,1 to 10 Hz), compensation of uncentered encoder mounting |
Output | Rotational angle/velocity, Torsional angle/velocity |
Visualization | angle based view, time domain |
MODAL TEST | |
Impact hammer method | roving hammer/roving accelerometer moving through points, averaging of multiple hits, double hit rejection, rejecting of hits (action buttons), grouping of sensors, adjustable excitation, and response window |
Free-run mode | Function generator (Apollo Series) for shaker excitation (swept sine, burst, chirp…) Hanning/Hamming windowing with overlap 0, 25, 50, 66, 75 % operating deflection shapes (Spectral ODS) |
FRF | Receptance, Effective Mass, Mobility, Impedance, Dynamic Compliance, Dynamic Stiffness, Transmissibility |
Modal Parameters | Mode Indicator Function (MIF), extract exact frequencies and damping factors with Modal circle fit (Option) |
Post processing | FRF from stored raw data, in free-run mode |
Geometry | Geometry editor, load, save, import models in UFF (UNV) format (Option) |
Animation | movement of nodes for selected frequency (place marker), change speed and amplitude (Option) |
Data export | Complex data (Real/Imag/Ampl/Phase) in UFF (UNV) format or any other, see Software Export section |
HUMAN BODY VIBRATION | |
General | module for judging vibration levels for risk of damage to the human body |
Supported types | Hand arm |
Compliance | to ISO 8041, ISO 2631-1, ISO 2631-5, ISO 5349 standards |
SOUND LEVEL | |
Frequency weighting | A, B, C, Lin (Z) |
Time weighting | Fast, Slow, Impulse |
Octave plot | 1/3 Lin/A/B/C/ weighting, Lin/Pk avg with overlap |
Supported standards | IEC 60651, IEC 60804, IEC 61672 |
Outputs | Sound pressure level, any combination of Frequency and Time weighting, Leq, Lpk, Lim, LE overall or on custom statistical rate, percentile levels (1, 5, 10, 50, 90, 95, 99 %) |
More features | real-time narrow band FFT, frequency weighted raw channel |
Calibration | auto-calibration of scaling factor with reference calibrator (1kHz, 94dB, 114 dB acc to IEC 60942:2003) |
BALANCING | |
Application | for rigid rotor running below its resonance frequency, based on order tracking (amplitude & phase), single- and dual-plane |
Supported tacho inputs | Counter: optical tacho, proximity, pick-up probe (1 pulse/rev), optical strip tape probe (with bl/wh tape, algorithm for determining number of pulses), 1-, 2-, 3- tracks encoder, gear tooth with missing teeth (e.g. 60-2), CDM, CDM with zero RPM channel: any analog speed channel, virtual (synthesized RPM channel, also in post-processing) Analog pulses: analog signal (e.g. 60-2) / analog tacho + angle sensor math alarm output if velocity exceeds predefined value weight splitting |
Visualization | Vector polar plots of 1st order of all runs |
Sequence | step-by-step guidance through procedure: initial run, trial mass run, correction mass run, repeat steps if needed |
Features | x and y direction balancing at the same time, when using triaxial sensor |
SOUNDPOWER | |
Standards | ISO 3741 (noise source in reverberation test room), ISO 3744 (engineering grade, free field over reflective plane), ISO 3745 (precision grade, anechoic or hemi anechoic room) |
Geometries | Parallelepiped, Cylindric, Hemisphere, Sphere |
Microphones | 10 number of microphones; positions will be calculated according to entered geometry and size, floor / 1 wall / 2 wall setup |
Measurement | Guided sequence, previous/next group (action buttons), background noise/sound measurement, with repeatability check, minimum measurement duration & level plausibility check and warnings, grouping of microphones |
Octave | 1/3 octave |
Correction methods | C1 and C2 meteorological, K1 background noise and, K2 room noise (mean absorption grade, reverberation time, K2 editor) |
Applications
- Impact hammer test
- Structure analysis
- Modal analysis
- Housing vibration
- Shaft vibration
- Balancing condition
- Ultrasound measurement
- Shock measurement
- Building vibration
- Bridge vibrations
- Machine maintenance
- Building acoustics and building vibration analysis
- Process monitoring
- End of line test
RogaDAQ4 Setup First steps with DASYLab