How To Calculate A Resultant Vector
Whatever your NVH or refinement needs, Prosig can provide a system to suit your requirements and budget.
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The Prosig NVH Starter system is a complete hardware and software bundle that provides a test engineer with everything they need to capture and analyze data from NVH & refinement tests. An ideal starting point for an engineer starting out in-vehicle NVH testing or other refinement scenarios.
Includes...
The Prosig NVH Pro System provides everything that the Starter System contains, but adds extra input channels, CAN-bus capability and more NVH application software. The Prosig P8020 unit is configured with sixteen 24-bit analog inputs, dual CAN-bus inputs and a dedicated tacho input. As well as the DATS NVH software bundle the Pro system adds the Hammer Impact, Psychoacoustics and Structural Animation packages.
Includes...
The Prosig P8004 is an ultra portable, high quality, 24-bit data acquisition system. It is compact, rugged and has 4 analog inputs plus dedicated tacho input and is suitable for basic NVH tests.
The Prosig P8012 can hold up to 3 cards giving up to 24 analog input channels. The chassis is rugged and portable making it ideal for mobile NVH applications of all kinds.
The Prosig P8020 has the same rugged, portable chassis as the others systems and is ideal for mobile or laboratory NVH tests where a higher channel count is needed.
The P8048 consists of a 12 card chassis that can be packaged for rack mounting or in a portable case. Up to 1024 channels can be configured for more complex NVH requirements.
Prolog is a controller that can replace your laptop or PC to allow remote, unattended or standalone operation of a P8000 system. The system may include one or more P8000 chassis.
The 8440 card supports 2 independent inputs for CAN-bus monitoring and PID mode. A GPS option allows position, velocity & time to be recorded. Ideal for correlating NVH data with vehicle data.
The 8420 is intended as a solution for NVH tests where highly accurate rotational measurements are required.
DATS is a comprehensive package of data acquisition, NVH measurement & analysis and other signal processing tools.
Includes NVH analysis tools such as extensive tacho analysis, waterfall and order analysis, waterfall averaging, 1/nth octave analysis and sound quality metrics.
The Rotating Machinery option contains a complete set of tools for NVH analysis of vibration & noise caused by cyclic forces such as those found in engines, gearboxes, turbines & wheel excitations.
The software leads the NVH engineer through the measurement and analysis of data of structural response measurements. Provides time histories, H1, H2, Coherence, ASD, CSD.
Animates 3D test pieces in time or frequency domain. Uses frequency response functions (FRF), FFT or cross spectra for frequency animation. Includes 3D graphical editor & AVI output of animations.
The Modal Analysis suite determines modal frequencies, damping factors & modal amplitudes from either measured frequency response functions or from response-only NVH data.
Allows the user to listen to and analyze NVH audio data. Shows time histories, orders, SQ metrics with simultaneous audio output. Order and frequency filters provide powerful 'what if' scenarios.
The DATS Psychoacoustics Analysis Suite provides a host of functions for the objective description of subjective sounds. Key to understanding and solving NVH problems.
Maps sound pressure or sound intensity using an array of microphones or a sound intensity probe. Displays drawn over an image of the NVH test piece and can be shown as contours and color maps.
Includes transfer path analysis, source contribution analysis and path contribution ranking. Helps locate which sources are causing NVH issues and which transfer paths are most critical.
Includes wavelet analysis and a number of other time-frequency algorithms including Wigner Ville, Atlas Zhao Marks and Born Jordan.
Multi-plane Balancing analyzes the baseline vibrations and then the vibrations from adding a trial mass (inertia) at each balance plane in turn. The user interface is designed to automate repetitive NVH testing.
Using a Prosig P8000 and DATS software to investigate issues with an exhaust bracket on a single seater racing car.
The requirement was to develop a ‘standard’ NVH test for assessing the sound quality of power steering pumps in vehicles. Measurements needed to be objective so that the method would be suitable for evaluating dissimilar vehicles and different types of pump.
A simple NVH test to measure noise as experienced by the driver of a vehicle.
A discussion of the definition of a decibel and how 'noise floor' and 'dynamic range' are defined and measured.
How a major after market exhaust (muffler) manufacturer uses a Prosig P8000 system and DATS software to refine their products and meet local noise legislation requirements.
Visit the Prosig Signal Processing Blog and discover many more articles on the application of signal processing techniques to noise and vibration problems.
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