Design and tuning of a bi-stable compliant mechanism

Design and tuning of a bi-stable compliant mechanism: For use in energy harvesting using frequency up conversion

Rietmeijer, Stijn (TU Delft Mechanical, Maritime and Materials Engineering; TU Delft Precision and Microsystems Engineering)

Blad, Thijs (mentor)
Steeneken, P.G. (graduation committee)
Alijani, F. (graduation committee)

Delft University of Technology

Mechanical Engineering | Mechatronic System Design (MSD)

2022-05-20

Vibration energy harvesting is a growing field of research. Harvesting energy from vibrations can be of use in devices in hard to reach places, such as sensors on a train track or a pacemaker. These devices makes use of batteries, which need to be replaced. Using energy harvesting this battery life could be improved.
The difficulty lies in harvesting low frequency vibrations. These vibrations are hard to harvest using a transducer such as a piezo. A solution could be using a frequency up converter, which can raise a vibrations frequency. This thesis shows the design of a Bi-stable Impact-driven Snap-through frequency up converter (BISup). Enhancing the behaviour of this bi-stable design could improve the energy harvesting capabilities. Different designs are made using ortho planar spring design, these designs are simulated and compared using ANSYS. These simulations are experimentally verified.

Bistability
Energy Harvesting
Ortho Planar Spring
Vibration Energy Harvesting

http://resolver.tudelft.nl/uuid:f77bb2d4-73dd-4d5d-ab01-f440b2c18e5a

Student theses

master thesis

© 2022 Stijn Rietmeijer