Patent ID: 8466601

Claim:
An operating method of a piezolinear drive having a group of piezo stack actuators which drive a rotor, in which the actuators constitute a multilayer ceramic arrangement situated on a common substrate, wherein a first stack part within the stack of the multilayer arrangement is formed as a longitudinal actuator, and a second stack part as a shearing actuator, and the latter being at least indirectly in clamping and shearing contact with the rotor, and at least two identical actuators being situated next to each other in order to perform alternate clamping and advancing movements in a step operation for a rough positioning operation in a step mode, wherein the adjacent actuators of the group are controlled to perform alternate clamping and advancing movements, with control signals being derived from a speed-proportional control variable, and wherein a cycle time of a shear voltage cycle and clamping voltage cycle and a maximum shear voltage for controlling the longitudinal actuators and the shearing actuators are tuned to each other and are derived as actuating variables from the control variable.