This paper presents the construction, modeling and properties of a compact, efficient electro-mechanical device called a 'pendulum actuator', used for generating periodic dynamic forces. Essentially, the device is composed of a transducer based on a smart material (e. g., a piezoelectric stack or a magnetostrictive rod), placed in a mechanical structure dedicated to hosting the electric or magnetic circuit for transducer excitation, and the mechanical displacement amplifier. This type of actuator can potentially cover a wide range of applications, but it also presents some fundamental challenges. In particular, generating periodic force signals demands special provisions due to the inherent nonlinear kinematics of the actuator device. This paper illustrates the potential and the limits of the device by developing an accurate mathematical model and presenting an extensive experimental investigation.
|Titolo:||Generating periodic forces with the pendulum actuator|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||10.1177/1077546311403183|
|Appare nelle tipologie:||1.1 Articolo in rivista|