Noise and vibration analysis

The NI Sound and Vibration Measurement Suite Version 7.0 extends analysis functionality with NI LabVIEW virtual instruments (VIs) for performing psychoacoustic measurements, making it possible for engineers to quickly set up tests for noise, vibration and harshness (NVH), machine condition monitoring and sound quality. Additionally, National Instruments announced the NI USB-4432, a portable bus-powered dynamic signal acquisition module for making high-accuracy sound and vibration measurements.

The Sound and Vibration Measurement Suite 7.0 supports full-featured sound quality analysis, so engineers can ensure high-quality acoustics in their designs. Engineers can quickly and efficiently get their applications started with the configuration-based Sound and Vibration Assistant or with more than 50 ready-to-run LabVIEW example code bases provided in the Sound and Vibration Measurement Suite.

For machine monitoring, machine health and machine efficiency applications, engineers can develop applications faster by using examples for tachometer processing, order spectra and waterfall plots. The Sound and Vibration Assistant now includes machine monitoring displays to quickly configure machine diagnostic utilities. These displays provide diagnostics for motor balance and shaft position in addition to more traditional order analysis displays.

The USB-4432 delivers 108 dB of dynamic range to properly capture high-frequency, low-amplitude vibrations in the presence of low-frequency, high-amplitude signals. The module consists of four analog input channels for reading from integral electronics (IEPE) sensors and a fifth channel for tachometer input. The five channels simultaneously acquire at rates up to 102.4 kSps, extending the frequency bandwidth and performing higher-frequency readings than other NI USB solutions. In addition, the USB-4432 features configurable AC/DC coupling to allow for a variety of vibration sensors on each channel.