In this paper, a linear tubular generator is presented. It is used for an energy harvesting
system equipped in a footwear, scavenging power from forward motion during a walk.
Configuration of the generator is studied, and geometric optimization by finite-element
analysis is detailed. A prototype is built, validating that the simulation and test results have a
good agreement.

This paper presents a linear generator used for energy harvesting system equipped in
footwear, which scavenges power from back-and-forth motion during walk. Structure of the
electric machine is studied, and sizing optimization by finite element analysis (FEA) is
detailed. A prototype has been built, validating that the simulated and test results have a
good agreement.