Patent ID: 7999438

Claim:
A piezoelectric driving device comprising: a laminated body comprising a base that is capable of being deformed by applying force, a first piezoelectric body that is formed on a first face of the base directly or via another layer, and a second piezoelectric body that is formed on a second face of the base substantially parallel to the first face, directly or via another layer; a driving voltage generating section that generates a driving voltage to displace the laminated body by a displacement amount; a compensating voltage generating section that generates a compensating voltage compensating for hysteresis caused by the displacement of the laminated body by the driving voltage so that the displacement amount of the laminated body becomes linear, wherein the compensating voltage generating section generates the compensating voltage according to the driving voltage on the basis of a measurement value obtained by previously measuring, for the driving voltage, i) a displacement voltage generated in the second piezoelectric body by the displacement of the laminated body or ii) the displacement amount of the laminated body, for each of the case that the driving voltage represents an increase in voltage and the case that the driving voltage represents a decrease in voltage; and a voltage applying section that applies each of the driving voltage and the compensating voltage to each of the first piezoelectric body and the second piezoelectric body.