Abstract
This paper presents a new method to eliminate deviation in positioning caused by coil's heat generation in magnetostrictive actuators. The advantages of the proposed system are compactness, high controllability and high reliability. The actuator package consists of Galfenol as active element and a magnification mechanism combined with a Peltier element or thermoelectric cooler (TEC). By using the temperature sensor, a thermoelectric cooler (TEC) is activated to reduce the temperature of the coil. However, the reduction of temperature by TEC alone is not enough to eliminate the error and controlling of applied voltage is also required. A simple PI controller for coil's current is combined with TEC and by reducing the temperature and current simultaneously, the positioning error is vanished completely.
Original language | English |
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Title of host publication | Behavior and Mechanics of Multifunctional Materials and Composites 2016 |
Publisher | SPIE |
Volume | 9800 |
ISBN (Electronic) | 9781510600416 |
DOIs | |
Publication status | Published - 2016 |
Event | Behavior and Mechanics of Multifunctional Materials and Composites 2016 - Las Vegas, United States Duration: Mar 21 2016 → Mar 23 2016 |
Other
Other | Behavior and Mechanics of Multifunctional Materials and Composites 2016 |
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Country/Territory | United States |
City | Las Vegas |
Period | 3/21/16 → 3/23/16 |
Keywords
- Galfenol
- Peltier element (TEC)
- Precise positioning
- Thermal instability
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering