Thesis
Magnetorheological actuator with controllable permanent magnet array
Washington State University
Master of Science (MS), Washington State University
12/2019
DOI:
https://doi.org/10.7273/000003971
Handle:
https://hdl.handle.net/2376/123034
Abstract
This research presents a new magnetorheological brake (MRB) that uses only permanent magnets to produce variable torque output. A new magnet array was developed that can be operated by a tiny motor allowing the device to apply torque using only 1.4 Watts of electrical power. In many applications, it is desirable to have actuators with high torque output, low volume and low input power. In recent years, this has led to extensive study of MRBs because they can provide high torque-to-volume ratios when compared to electric motors of similar size. There have been many studies to optimize volume and torque, which usually leads to designs requiring complex internal magnetic flux paths and excessive power requirement resulting in joule heating and reduced performance in long-term use. Our results show that the new brake can operate for 22 hours using a small battery while cycling through full on/off torque output. It can also apply full torque output indefinitely with no power input required to keep it on. There is no joule heating since there are no coils in the design.
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Details
- Title
- Magnetorheological actuator with controllable permanent magnet array
- Creators
- Blake Nelson Wiley
- Contributors
- HAKAN BERAT GUROCAK (Advisor) - Washington State University, School of Engineering and Computer Science (VANC)
- Awarding Institution
- Washington State University
- Academic Unit
- Voiland College of Engineering and Architecture
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Identifiers
- 99900890803701842
- Language
- English
- Resource Type
- Thesis