POWER AMPLIFIERS FOR PIEZOELECTRIC ACTUATORS

摘要

In the year 2000 diesel injection valves with piezoelectric actuators for automobiles have been used in series production for the first time. The introduction of the piezo technology in a mass product is expected to increase the acceptance of piezoelectric actuators for other applications by leaps and bounds. In light of this the efficient electric operation of piezoelectric actuators is gaining interest. This paper presents different, not only commercially available amplifier concepts but also totally new power amplifiers for piezoelectric actuators and their application-relevant features.