Patent ID: 11888415
Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method according to claim 2, wherein for decelerating the piezoelectric stick-slip motor speed, the Step B further comprises at least one or more of the following sub-steps of modifying the cyclic sawtooth-waveform drive voltage signal as compared to the Step A:
a. Sub-Step B1: gradually decreasing the gradient (dV/dt) of increasing the drive voltage (V) to the peak voltage (Vp) with each subsequent sawtooth-waveform drive voltage signal cycle (C) while maintaining the peak voltage (Vp) constant so as to extend the first phase (1) while shortening the second phase (2) to a same amount for compensating the extension of first phase (1); and/or
b. Sub-Step B2: gradually decreasing the peak voltage (Vp) as well as the gradient (dV/dt) of increasing the drive voltage (V) to the peak voltage (Vp) with each subsequent sawtooth-waveform drive voltage signal cycle (C) so as to extend the first phase (1) while eliminating the second phase (2) and possibly shortening the third phase (3) for compensating the extension of first phase (1).