Systems and methods for identifying problems with PZT elements of micro-actuators are provided. In certain example embodiments, a voltage (e.g., a sine voltage) may be applied to a reference unit causing it as well as a test unit to vibrate. Characteristics of the respective resonances (e.g., frequency,...http://www.google.de/patents/US7768276?utm_source=gb-gplus-sharePatent US7768276 - Systems and methods for identifying problems with PZT elements of micro-actuators
