Self-powered dynamic systems

Abstract: This article concerns the concept of energy harvesting associated with dynamic systems. The particular area of work is the concept of fully or partially self-powered dynamic systems requiring zero or reduced external energy inputs. A self-powered dynamic system, in this paper, is defined as a dynamic system powered by its own excessive kinetic energy, renewable energy or a combination of both. The technologies explored in the paper are associated with self-powered devices (e.g. sensors), regenerative actuators, and energy harvesting. The power produced by human motion is reported as a potential energy input to mechanical devices. A solar powered airship system is used as an example of a self-sustained system. A bio-inspired design is investigated to demonstrate the advantage of employing biomimetics in improving the power density of an energy harvesting system.

Abstract: The energy that is needed for operating a self-powered device is provided by the energy excess in the system in the form of kinetic energy, or a combination of regenerative and renewable energy. This paper addresses the energy exchange issues pertaining to regenerative and renewable energy in the development of a self-powered dynamic system. A rigorous framework that explores the supply and demand of energy for self-powered systems is developed, which considers uncertainties and optimal bounds, in the context of optimal uncertainty quantification. Examples of regenerative and solar-powered systems are given, and the analysis of self-powered feedback control for developing a fully self-powered dynamic system is discussed.