ROGA Instruments offers a complete system for the following measurement tasks: Bump test generator, bump test vibration, rotor dynamics and resonance analysis.
ROGA Instruments offers specialized measurement systems and software for psychoacoustics and sound design. These solutions combine precision sensors (e.g., microphones and accelerometers) with analysis software to evaluate noise not merely in purely physical terms (in decibels), but based on human perception.
Core Areas of ROGA Psychoacoustic Measurement Setups: The use of USB measurement microphones and sensors (primarily IEPE-based), which connect directly to a PC via Plug.n.DAQ systems.
In this presentation, I demonstrate how you can use the NVH Analyzer software to perform vibration analyses on rotating machinery, gearboxes, and generators as a function of rotational speed. Subsequently, order analyses can be applied, and the filtered vibrations can be listened to as a function of rotational speed.
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 |
All necessary components are included in the Rotor Vibration SET as follows. Pocket Laser Tachometer , accelerometer, RogaDAQ2, sensor cable 2 meters long, NVH-IMP and NVH-FFT software.
Analog Input | 2ch single ended BNC, IEPE, AC, DC |
|---|---|
Simultaneously sampling ADCs | 2 |
ADC Resolution | 24 Bit |
Sampling rate | 48 kHz |
Range input Tacho input | ±10 Volt for IEPE Accelerometer ±30 Volt for 24 Volt RPM Signal |
AC- or DC-coupling | Selectable |
IEPE sensor supply | 4 mA – 24 Volt |
Anti-Aliasing filter | Self adjusting |
Accuracy | better ± 0,1 dB |
Dynamic Range | 124 dB（FFT-based) |
THD | < 0,005%, |
Frequency Response | DC – 24 kHz (± 0,05 dB)
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With IEPE Supply |
0.3 – 24 kHz (± 0,05 dB) |
Powered by USB Port | Power consumption < 1W |
Temperature range | 0 to + 50 °C |
Dimensions | 85 (w) x 132 (d) x 35 (h) mm |
Weight | 230 g |