Electromagnetically-excited noise and vibrations in medical appliances

Electrical systems involved in medical appliances must be particularly quiet. They can represent acoustic annoyances during surgery, stay in hospital and home convalescence or rehabilitation for the medical staff, the patient and his relatives.

As an example, the following electromechanical systems can vibrate and create unpleasant acoustic noise due to electromagnetic forces:

- high speed spindle motors used for surgery, dental drills
- ventilatory support machines
- pacemakers
- motorized exoskeletons

Besides reducing the overall noise level of these device, it is more generally important to control their psychoacoustic effect. EOMYS knows the influential design parameters of electromechanical device on psychoacoustic indices.

EOMYS can characterize the NVH behaviour of electric motors and electric components with specialized electrical, vibration and acoustic measurements, and can offer both electrical engineering and mechanical noise reduction solutions. EOMYS also works at design stage helping the electrical engineers to assess the NVH performances of these components (for instance with MANATEE simulation software), and realizing technical trainings on the control of electromagnetically-excited noise and vibration.

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