TY - GEN
T1 - Elimination of thermal instability in precise positioning of Galfenol actuators
AU - Ghodsi, Mojtaba
AU - Saleem, Ashraf
AU - Özer, Abdullah
AU - Bahadur, Issam
AU - Alam, Khurshid
AU - Al-Yahmadi, Amur
AU - Ghodsi, Mohammad Hadi
AU - Hoshyarmanesh, Hamidreza
AU - Sheykholeslami, Mohammad Reza
N1 - Publisher Copyright:
© 2016 SPIE.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - Galfenol
KW - Peltier element (TEC)
KW - Precise positioning
KW - Thermal instability
UR - http://www.scopus.com/inward/record.url?scp=84983364802&partnerID=8YFLogxK
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U2 - 10.1117/12.2222990
DO - 10.1117/12.2222990
M3 - Conference contribution
AN - SCOPUS:84983364802
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Behavior and Mechanics of Multifunctional Materials and Composites 2016
A2 - Goulbourne, Nakhiah C.
PB - SPIE
T2 - Behavior and Mechanics of Multifunctional Materials and Composites 2016
Y2 - 21 March 2016 through 23 March 2016
ER -