GÖPEL electronic has introduced its CARoLINE acoustic testing system for detecting and analyzing unwanted noise and vibration in mechatronic electric motor vehicle components. The system is designed to support quality assurance in electric vehicle (EV) manufacturing by identifying early indicators of assembly errors or component faults that could lead to noise issues and increased wear over time.
Noise and vibration in mechatronic components are not only undesirable from a user perspective but may also signal underlying manufacturing defects. If undetected, these issues can result in costly warranty claims, dismantling, and damage to brand reputation.
To help manufacturers avoid such risks, GÖPEL electronic has developed the CARoLINE series, a solution tailored for real-time acoustic evaluation during production.
The CARoLINE system collects noise data from multiple sensor types, including airborne and structure-borne sound, and processes the information through GÖPEL electronic’s analysis software. The CARoLINE advanced model supports up to eight channels and is available as a stand-alone device or as a plug-in module for integration into 19-inch racks.
Additional input channels for analog displacement, rotation angle, and digital trigger signals allow for detailed operational context. Speed-dependent testing is also supported via ripple current analysis. A more compact option, the CARoLINE smart model, includes four sensor channels and is designed for applications with reduced input requirements.
During operation, sensors are positioned relative to the noise source of the test object (such as on seat frames or motor housings) and connected to the CARoLINE system. When the test sequence is triggered, the system synchronously records and evaluates the noise behavior in relation to pre-defined thresholds, enabling immediate detection of anomalies.
CARoLINE also supports advanced acoustic evaluation techniques. Modulation analysis, for example, assesses the stability of a specific frequency during movement, helping engineers detect early signs of tonal noise like whining. Third-octave analysis allows for psychoacoustic assessments, identifying tonal issues such as squeaks or beeps that may otherwise go unnoticed in standard frequency analysis.
With this solution, GÖPEL electronic offers manufacturers a reliable method for integrating acoustic quality control into their production workflows, helping ensure that components meet both performance and customer satisfaction expectations before vehicle assembly.
Filed Under: Technology News