| 摘要 |
A piloting unit, preferably but not exclusively aimed at actuating vibration apparatus (110), of the type comprising means for drawing energy from a source, means for actuating and de-actuating at least one electromagnetic actuator (28) of said apparatus and means for setting the work cycle, characterised in that it also comprises means for indirectly identifying the resonance frequency of the apparatus and for maintaining the vibration frequency close to said resonance frequency. |
