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

Claim 0:
1. A method of controlling a piezoelectric stick-slip motor, the method comprising:
a. Step A: applying to the piezoelectric stick-slip motor a cyclic sawtooth-waveform drive voltage signal with a constant frequency in which a drive voltage (V) increases to and decreases from a peak voltage (Vp) for operating the piezoelectric stick-slip motor with a constant speed; and
b. Step B: changing a piezoelectric stick-slip motor speed by gradually increasing or decreasing a 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 keeping a frequency of the cyclic sawtooth-waveform drive voltage signal constant.