A shaker for transmitting vibrations to an application has a frame; magnet unit that provides a magnetic field in a gap; coil assembly including a voice coil mounted to a former. The former is attached to the frame at a former attachment surface and configured to position the coil in the gap, when the shaker is at rest. The magnet unit moves relative to the coil along an axis when the shaker is activated by supplying current to the coil. The magnet unit is suspended from the frame by a suspension arrangement including proximal and distal suspensions which interconnect the frame and magnet unit. The proximal suspension is closer to the former attachment surface than the distal suspension when the shaker is at rest. One of the proximal and distal suspensions has a stiffness K1, and the other K2, wherein K2>K1, and the ratio K1/K2 is 0.4 or less.
SHAKER
2024-09-19
Patent
Electronic Resource
English
IPC: | G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
NTRS | 2014
|Robuste Trajektorienfolgeregelung elektromagnetischer Shaker
Tema Archive | 2007
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