Abstract: Two-degree-of-freedom (2-dof) proportional-integral-derivative (PID) controllers are better than the 1-dof counterpart in the sense that the former can predominantly reduce large overshoot ...

Abstract: In this article, we investigate the effects of dc bias voltage on characteristics for Aluminum Nitride (AlN)-based piezoelectric micromachined ultrasonic transducers (PMUTs). As dc bias ...