US 11,944,012 B2
Method for transmitting data from an actuator to a control unit, corresponding actuator, and corresponding control unit
Andreas Kneer, Koengen (DE); Andreas Hempel, Ludwigsburg (DE); Charlotte Summerer, Stuttgart (DE); Dieter Elshuber, Attnang-Puchheim (AT); Dieter Schuler, Stuttgart (DE); Markus Ditlevsen, Stuttgart (DE); and Yannick Chauvet, Stuttgart (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Sep. 22, 2021, as Appl. No. 17/448,479.
Claims priority of application No. 102020215549.6 (DE), filed on Dec. 9, 2020.
Prior Publication US 2022/0181539 A1, Jun. 9, 2022
Int. Cl. H10N 30/80 (2023.01); H10N 30/20 (2023.01)
CPC H10N 30/802 (2023.02) [H10N 30/20 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A method for transmitting data from an actuator to a control unit configured to control the actuator, the control unit configured to control a piezoelectric element contained in the actuator, the method comprising:
for transmitting the data, in the actuator, connecting or not connecting, a load in parallel with the piezoelectric element;
wherein the control unit applies a first predetermined voltage difference to the piezoelectric element for controlling the piezoelectric element and a second predetermined voltage difference to the piezoelectric element for transmitting the data; and
wherein the second voltage difference is not large enough to drive the actuator.