CPC H10N 30/802 (2023.02) [H10N 30/20 (2023.02)] | 8 Claims |
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.
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