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Technical Paper

Global Tool for Objective Data Acquisition for Brake NVH Tests

2013-03-25
2013-01-0053
Brake NVH is nowadays a first priority in braking system development for OEMs and Tier1 suppliers. Cheap and reliable solutions are constantly researched for identification and analysis of brake NVH phenomena. An innovative procedure for brake NVH durability testing has been developed by Applus+ IDIADA in order to investigate noise events during braking. An acquisition system (dbBrake) and software (dbSoft) have been developed with the aim of analyzing high and low frequency noise during braking and carrying out an automatic analysis of occurrence, frequency and SPL (Sound Pressure Level) of brake noise. Noise can be triggered using different parameters. Brake line pressure, temperature and speed conditions are also automatically recorded and analyzed when noise occurs In order to corroborate the objective results logged by dbBrake system, the correlation with subjective evaluation from expert drivers is also automatically carried out.
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