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INDIVIDUAL CARE DEVICE HAVING SELF-ADJUSTING AMPLITUDE CONTROL BY NONLINEARITY AND ACTIVE REGULATION OF EXCITATION OF EXECUTIVE DEVICE, AND PERFORMED BY THEIR METHOD
INDIVIDUAL CARE DEVICE HAVING SELF-ADJUSTING AMPLITUDE CONTROL BY NONLINEARITY AND ACTIVE REGULATION OF EXCITATION OF EXECUTIVE DEVICE, AND PERFORMED BY THEIR METHOD
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机译:具有非线性和主动调节执行装置激励的自我调节放大器控制的个人护理装置,并通过其方法执行
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摘要
A personal care appliance 10 comprises an actuator 14, a current sensor 28 for monitoring a driving current, and a controller 24. The actuator 14, operable according to a non-linear response characteristic 58 of amplitude versus frequency, includes a movable shaft 18 configured for resonant movement 38 in response to a drive signal 25, further for being coupled with a workpiece 20. The controller 24 (i) detects at least one of a plurality of different characteristic load states (100,102,104,106,108,110) in response to a perturbation in the monitored driving current 29 and (ii) actively delivers the drive signal 25 to the actuator 14 selected from at least two different drive signals (66,70) as a function of a detected characteristic load state. In this manner, the controller 24 implements self-adaptive amplitude regulation of the movable shaft's resonant movement 38 among the plurality of difference characteristic load states that include additional loads of force, spring, mass, and/or damping to a given load state of a resonant spring mass system of actuator 14 coupled with workpiece 20.
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