Vibration control of an optical arm

Abstract

Several nonlinear treatments of piezoelectric voltages have been studied and developed. These techniques greatly improve the switching capabilities of piezoelectric materials. There are active and passive vibration control techniques: Passive technology involves connecting piezoelectric elements to a passive grid; and active technology requires a bulky system that contains at least a sensor, a controller, and a feedback actuator. In addition, control units and actuators require external power supplies and amplifiers. In addition, control units and actuators require external power supplies and amplifiers. SSD (Synchronous Switch Damping) technology allows optimal management of energy transfer in multiphysical couplings, especially electromechanical couplings created by piezoelectric elements. Based on nonlinear manipulation of the voltage of active elements embedded in the host structure, they greatly increase the extracted mechanical energy, which is then converted into electrical energy. Two main areas can benefit from this optimization: vibration control (SSD) technology, because more energy is extracted from the structure to minimize its energy vibration, and energy harvesting (SSH) technology, because the harvested electrical energy becomes sufficient to supply low consumption electronic circuits. This work focuses on vibration control and energy harvesting using embedded piezoelectric elements. First, the SSD principle applied to piezoelectric materials is introduced. Then, a summary is presented of the work consisting on estimating the attenuation obtained on the vibrations of an optical arm by non-linear SSD techniques.