Invention Grant
- Patent Title: Method of controlling at least two interacting piezoelectric actuators
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Application No.: US17912634Application Date: 2021-03-12
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Publication No.: US12074540B2Publication Date: 2024-08-27
- Inventor: Koc Burhanettin
- 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
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: EP 165674 2020.03.25
- International Application: PCT/EP2021/056298 2021.03.12
- International Announcement: WO2021/190953A 2021.09.30
- Date entered country: 2022-09-19
- Main IPC: H02N2/06
- IPC: H02N2/06 ; H02N2/02

Abstract:
A method is provided of controlling at least two interacting piezoelectric actuators for commonly displacing an object attached thereto. The method comprises the following steps: a. Step A: applying a first cyclic drive voltage signal with a constant frequency to the first piezoelectric actuator, b. Step B: applying a second cyclic drive voltage signal with a constant frequency to said second piezoelectric actuator, whereby the frequencies of the first and second cyclic drive voltage signals are substantially identical and whereby the frequencies of the first and second cyclic drive voltage signals are substantially oppositely phased, and in which at least in a predetermined time period the cyclic drive voltage signals in step A and B are synchronized such that at least one time phase is comprised in which the drive voltage signals of the first and second piezoelectric actuators have both a gradient of decreasing or increasing the respective drive voltage signal having the same sign or one of these gradients is zero and the other is not zero.
Public/Granted literature
- US20230188057A1 METHOD OF CONTROLLING AT LEAST TWO INTERACTING PIEZOELECTRIC ACTUATORS Public/Granted day:2023-06-15
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