Invention Grant
- Patent Title: Piezoelectric stick-slip-motor and method of controlling same
-
Application No.: US17640142Application Date: 2020-08-25
-
Publication No.: US11888415B2Publication Date: 2024-01-30
- Inventor: William Culpi , Jerome Kneipp
- Applicant: Physik Instrumente (PI) GmbH & Co. KG
- Applicant Address: DE Karlsruhe
- Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
- Current Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
- Current Assignee Address: DE Karlsruhe
- Agency: BUCHANAN INGERSOLL & ROONEY PC
- Priority: EP 195819 2019.09.06
- International Application: PCT/EP2020/073749 2020.08.25
- International Announcement: WO2021/043636A 2021.03.11
- Date entered country: 2022-03-03
- Main IPC: H02N2/06
- IPC: H02N2/06 ; H02N2/02

Abstract:
The present disclosure relates to a piezoelectric stick-slip-motor and control method. An exemplary method to enable speed variation of the piezoelectric stick-slip-motor with a reduced noise generation, includes: applying a cyclic sawtooth-waveform drive voltage signal with a constant frequency in which the drive voltage (V) increases to and decreases from a peak voltage (Vp) for operating the motor with a constant speed; and changing the motor speed by gradually increasing or 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 keeping the frequency of the drive voltage signal constant.
Public/Granted literature
- US20220321030A1 PIEZOELECTRIC STICK-SLIP-MOTOR AND METHOD OF CONTROLLING SAME Public/Granted day:2022-10-06
Information query