Elimination of thermal instability in precise positioning of Galfenol actuators

Mojtaba Ghodsi; Ashraf Saleem; Abdullah Özer; Issam Bahadur; Khurshid Alam; Amur Al-Yahmadi; Mohammad Hadi Ghodsi; Hamidreza Hoshyarmanesh; Mohammad Reza Sheykholeslami

doi:10.1117/12.2222990

Elimination of thermal instability in precise positioning of Galfenol actuators

Mojtaba Ghodsi^*, Ashraf Saleem, Abdullah Özer, Issam Bahadur, Khurshid Alam, Amur Al-Yahmadi, Mohammad Hadi Ghodsi, Hamidreza Hoshyarmanesh, Mohammad Reza Sheykholeslami

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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
Title of host publication	Behavior and Mechanics of Multifunctional Materials and Composites 2016
Publisher	SPIE
Volume	9800
ISBN (Electronic)	9781510600416
DOIs	https://doi.org/10.1117/12.2222990
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
Country	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

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Elimination of thermal instability in precise positioning of Galfenol actuators. / Ghodsi, Mojtaba ; Saleem, Ashraf ; Özer, Abdullah ; Bahadur, Issam ; Alam, Khurshid ; Al-Yahmadi, Amur; Ghodsi, Mohammad Hadi; Hoshyarmanesh, Hamidreza; Sheykholeslami, Mohammad Reza.

Behavior and Mechanics of Multifunctional Materials and Composites 2016. Vol. 9800 SPIE, 2016. 980008.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ghodsi, M , Saleem, A , Özer, A , Bahadur, I , Alam, K , Al-Yahmadi, A, Ghodsi, MH, Hoshyarmanesh, H & Sheykholeslami, MR 2016, Elimination of thermal instability in precise positioning of Galfenol actuators. in Behavior and Mechanics of Multifunctional Materials and Composites 2016. vol. 9800, 980008, SPIE, Behavior and Mechanics of Multifunctional Materials and Composites 2016, Las Vegas, United States, 3/21/16. https://doi.org/10.1117/12.2222990

Ghodsi, Mojtaba ; Saleem, Ashraf ; Özer, Abdullah ; Bahadur, Issam ; Alam, Khurshid ; Al-Yahmadi, Amur ; Ghodsi, Mohammad Hadi ; Hoshyarmanesh, Hamidreza ; Sheykholeslami, Mohammad Reza. / Elimination of thermal instability in precise positioning of Galfenol actuators. Behavior and Mechanics of Multifunctional Materials and Composites 2016. Vol. 9800 SPIE, 2016.

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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.",

keywords = "Galfenol, Peltier element (TEC), Precise positioning, Thermal instability",

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AU - Alam, Khurshid

AU - Al-Yahmadi, Amur

AU - Ghodsi, Mohammad Hadi

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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.

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KW - Peltier element (TEC)

KW - Precise positioning

KW - Thermal instability

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