Electromagnetically-excited noise and vibrations in home appliances

Home appliances can involve electromagnetically-excited noise and vibrations, including noise of electric motors.

More generally consumer goods contain numerous electronic systems. They operate close from the users, in a low background noise environment. Their so-called electrical hum or buz can therefore be heard more easily and result in acoustic annoyances.

These products may include:

- compressors for refrigerators
- electric motors for washing machines, cooking robots
- HVAC motors
- small transformers for charging electronic goods (e.g. laptops, smart phones)
- power electronics (e.g. chopper, inductors, capacitors) integrated in electronic goods (e.g. LED lamps, fluorescent lamps, halogen lamps)
- induction heating devices (e.g. cooktops, oven)
- electrical curtains
- electronic displays

In some cases, it is more important to reduce the degree of subjective annoyance (e.g. loudness, roughness reduction) rather than decrease the overall noise level. EOMYS knows about psychoacoustics of electrical systems and their most influential electrical system design parameters.

EOMYS characterizes electromagnetic audible noise with specialized electrical, vibration and acoustic measurements, proposing both electrical engineering and mechanical solutions. EOMYS also works at design stage helping the electrical engineers to assess the vibroacoustic performances of these components (for instance with MANATEE software), and realizing technical trainings on the control of electromagnetically-excited noise and vibration.

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