End-of-line noise testing of rotating machinery
E-motor, gearbox, pump, fan, compressor, actuator and steering: SonicTC.NVH evaluates the airborne and structure-borne noise of every part objectively within the production cycle.
End-of-line noise testing with SonicTC.NVH objectively evaluates airborne and structure-borne noise of rotating machinery within the production cycle; the OK/NOK result is available in under one second and is sent to the machine control via industrial communication interfaces.
Test object, fault pattern, method.
| Test object | Typical fault patterns | Method |
|---|---|---|
| E-motor | Bearing damage, magnetic noise, imbalance, rubbing | Order analysis, envelope, psychoacoustics |
| Gearbox | Gear mesh faults, bearing damage, assembly errors | Order analysis, modulation analysis, envelope |
| Pump | Bearing damage, imbalance, rubbing | Order analysis, envelope |
| Fan | Imbalance, rubbing, bearing damage | Order analysis, psychoacoustics |
| Compressor | Bearing damage, imbalance, assembly errors | Order analysis, envelope |
| Actuator | Gear mesh faults, rubbing, bearing damage | Order analysis, psychoacoustics |
| Steering | Gear mesh faults, rubbing, bearing damage | Order analysis, envelope, psychoacoustics |
Sequence within the production cycle
The part is driven and runs through a defined run-up. SonicTC acquires airborne and structure-borne noise, evaluates the signals with order analysis, envelope analysis and psychoacoustics and compares them with the limits. The OK/NOK result is available in under 1 s and is passed to the machine control via PROFINET, OPC UA, EtherNet/IP, Modbus, TCP/IP or digital I/Os.
Limits learned from good parts
Limits are derived from good-part references (statistically, control chart) or in anomaly mode, which learns the behaviour of good parts – bad parts are not required to get started. Variants and limits are configured, not programmed.
System variants: Mobile, Cube, Line
SonicTC.Mobile for feasibility and service work, SonicTC.Cube as a manual bench test station with sound insulation, SonicTC.Line as a fully automated inline system. Software licence and hardware are decoupled: start mobile and scale into the line later.
Frequently asked.
Which rotating machines can be tested acoustically at end of line?
E-motors, gearboxes, pumps, fans, compressors, actuators and steering systems – wherever bearings, gear mesh or imbalance produce a speed-related noise.
Why order analysis instead of a simple frequency spectrum?
Order analysis shows vibrations as multiples of the rotational speed. Speed-related faults such as gear mesh, bearing damage or imbalance therefore remain clearly assignable even during the run-up.
How does the test result reach the machine control?
SonicTC reports the OK/NOK result to the machine control via PROFINET, OPC UA, EtherNet/IP, Modbus, TCP/IP or digital I/Os; results remain traceable.
Ready to experience acoustic test technology in your line?
Send us your part or schedule an online demo. First assessment within 24 hours.