PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement
SMA fibers can be used as mechanical actuators, since like electrical muscles, they modify their length as temperature changes. Metallographic transformation, which causes shape variation, takes place in a narrow temperature margin, requiring a controller that causes mechanical position feedback, i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universidad del Zulia
2010-11-01
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| Series: | Revista Técnica de la Facultad de Ingeniería |
| Subjects: | |
| Online Access: | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5717 |
| _version_ | 1811188539067465728 |
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| author | Rafael Francisco López Fernández Luis Manuel Tomás Balibrea Ginés Doménech Asensi |
| author_facet | Rafael Francisco López Fernández Luis Manuel Tomás Balibrea Ginés Doménech Asensi |
| author_sort | Rafael Francisco López Fernández |
| collection | DOAJ |
| description | SMA fibers can be used as mechanical actuators, since like electrical muscles, they modify their length as temperature changes. Metallographic transformation, which causes shape variation, takes place in a narrow temperature margin, requiring a controller that causes mechanical position feedback, in order to adjust the power supply needed to reach desired position. The alloy used has been NiTi, heated by an electrical current, and cooled by natural convection. Two main problems are the strong transformation hysteresis and the great cooling time, because of natural convection. To control the hysteresis, two PID regulators have been used, which are chosen depending on the transformation direction. As to cooling time optimization and relaxation, they have been reduced in certain cases by modifying the point at which transformation moment occurs, using electrical fiber resistance measurement. Finally, after presenting experimental results, a discussion is developed about SMA actuator restrictions.
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| first_indexed | 2024-04-11T14:21:38Z |
| format | Article |
| id | doaj.art-d68a426e3aac4067bedf538ee65f0558 |
| institution | Directory Open Access Journal |
| issn | 0254-0770 2477-9377 |
| language | English |
| last_indexed | 2024-04-11T14:21:38Z |
| publishDate | 2010-11-01 |
| publisher | Universidad del Zulia |
| record_format | Article |
| series | Revista Técnica de la Facultad de Ingeniería |
| spelling | doaj.art-d68a426e3aac4067bedf538ee65f05582022-12-22T04:19:03ZengUniversidad del ZuliaRevista Técnica de la Facultad de Ingeniería0254-07702477-93772010-11-01233PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurementRafael Francisco López Fernández0Luis Manuel Tomás Balibrea1Ginés Doménech Asensi2Universidad de Murcia-EspañaUniversidad de Murcia-EspañaUniversidad de Murcia-España SMA fibers can be used as mechanical actuators, since like electrical muscles, they modify their length as temperature changes. Metallographic transformation, which causes shape variation, takes place in a narrow temperature margin, requiring a controller that causes mechanical position feedback, in order to adjust the power supply needed to reach desired position. The alloy used has been NiTi, heated by an electrical current, and cooled by natural convection. Two main problems are the strong transformation hysteresis and the great cooling time, because of natural convection. To control the hysteresis, two PID regulators have been used, which are chosen depending on the transformation direction. As to cooling time optimization and relaxation, they have been reduced in certain cases by modifying the point at which transformation moment occurs, using electrical fiber resistance measurement. Finally, after presenting experimental results, a discussion is developed about SMA actuator restrictions. https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5717SMAcontrolmechanical actuatorPID |
| spellingShingle | Rafael Francisco López Fernández Luis Manuel Tomás Balibrea Ginés Doménech Asensi PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement Revista Técnica de la Facultad de Ingeniería SMA control mechanical actuator PID |
| title | PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement |
| title_full | PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement |
| title_fullStr | PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement |
| title_full_unstemmed | PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement |
| title_short | PID control of SMA fibers. Hysteresis consideration, and time extension reduction using electrical resistance measurement |
| title_sort | pid control of sma fibers hysteresis consideration and time extension reduction using electrical resistance measurement |
| topic | SMA control mechanical actuator PID |
| url | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5717 |
| work_keys_str_mv | AT rafaelfranciscolopezfernandez pidcontrolofsmafibershysteresisconsiderationandtimeextensionreductionusingelectricalresistancemeasurement AT luismanueltomasbalibrea pidcontrolofsmafibershysteresisconsiderationandtimeextensionreductionusingelectricalresistancemeasurement AT ginesdomenechasensi pidcontrolofsmafibershysteresisconsiderationandtimeextensionreductionusingelectricalresistancemeasurement |