Shared inductor hybrid topology for weight constrained piezoelectric actuators

16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Elliott, A.D.T.^1 ; Caccia, A.^2 ; Thomas, A.^2 ; Astolfi, A.^1 ; Mitcheson, P.D.^1

AMCC Consulting Ltd, London, United Kingdom^1

Animal Dynamics, Oxford, United Kingdom^2

关键词: Control circuits;    Hybrid topologies;    Off-the-shelf components;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/773/1/012067/pdf
DOI  :  10.1088/1742-6596/773/1/012067

来源: IOP

【 摘 要 】

This paper presents a new circuit topology designed to minimise the weight of the control circuit required to actuate multiple piezoelectric actuators. It can independently set the phase and bias voltage on each piezoelectric actuator through the use of a single inductor. This is highly desirable in weight constrained applications such as unmanned aerial vehicles as the ferroelectric material required for the inductor is heavy. Furthermore, the circuit topology can also use the same inductor to generate the high bias voltage required to drive the actuators. The full system has been verified in PSpice and a pair of piezoelectric actuators have been successfully driven using off the shelf components.