US 11,988,826 B2
Method for controlling a drive apparatus of a micro-oscillation mirror, control device and deflector mirror apparatus
Jürgen Nies, Bietigheim-Bissingen (DE); Jochen Schenk, Bietigheim-Bissingen (DE); and Michael Kleiser, Bietigheim-Bissingen (DE)
Assigned to VALEO SCHALTER UND SENSOREN GMBH, Bietigheim-Bissingen (DE)
Appl. No. 16/973,199
Filed by Valeo Schalter und Sensoren GmbH, Bietigheim-Bissingen (DE)
PCT Filed Jun. 4, 2019, PCT No. PCT/EP2019/064435
§ 371(c)(1), (2) Date Dec. 8, 2020,
PCT Pub. No. WO2019/238467, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 10 2018 114 388.5 (DE), filed on Jun. 15, 2018.
Prior Publication US 2021/0255454 A1, Aug. 19, 2021
Int. Cl. G02B 26/08 (2006.01); G01S 7/481 (2006.01); G02B 26/10 (2006.01); G01S 17/931 (2020.01)
CPC G02B 26/0841 (2013.01) [G01S 7/4817 (2013.01); G02B 26/105 (2013.01); G01S 17/931 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling a drive apparatus of a micro-oscillation mirror, the method comprising:
generating at least one actuation signal for actuation of the drive apparatus in such a way that the driver apparatus drives the micro-oscillation mirror in an oscillating manner;
sensing at least one position signal which characterizes the deflection of the micro-oscillation mirror,
wherein the at least one actuation signal is closed-loop controlled on the basis of the at least one position signal in such a way that the micro-oscillation mirror is driven at its resonant frequency;
continuously comparing an amplitude of the at least one position signal at least one threshold value; and
determining at least one time interval between at least two passes of the at least one position signal through at least one threshold value, wherein the at least one actuation signal is closed-loop controlled on the basis of the at least one time interval,
wherein a time interval between a pass of the at least one position signal through a first threshold value and the next pass through a second threshold value is determined and a deflection of the micro-oscillation mirror is determined therefrom.