Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage
Permanent magnet linear motors have been increasingly used in many machine applications that need precise and high speed motions since the last decade. A major drawback which is the heat trap in the coil cannot be dissipated to the environment fast enough, and much of the heat is transferred to the...
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| Format: | Thesis |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/51777 |
| _version_ | 1811691749712592896 |
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| author | Chow, Kelvin Joon Ho |
| author2 | Zhong Zhaowei |
| author_facet | Zhong Zhaowei Chow, Kelvin Joon Ho |
| author_sort | Chow, Kelvin Joon Ho |
| collection | NTU |
| description | Permanent magnet linear motors have been increasingly used in many machine applications that need precise and high speed motions since the last decade. A major drawback which is the heat trap in the coil cannot be dissipated to the environment fast enough, and much of the heat is transferred to the carriage The thermally induced deformations and stresses of the carriage, due to high heat influx from the coil, will distort the carriage and any specimens fix on the carriage top. The resulting distortion will produce a positioning error. The lumped-parameter method is adopted here to model the temperature and heat flux from the joining top of the coil to the carriage. The model has several essential elements such as a heat source sub-model, heat loss convective coefficients for complex geometry, and contact conductance values between structure parts. The developed method for predicting the positioning error is real-timed and flexible to any process of a specific precision machine structure. |
| first_indexed | 2024-10-01T06:24:50Z |
| format | Thesis |
| id | ntu-10356/51777 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:24:50Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/517772023-03-11T17:57:57Z Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage Chow, Kelvin Joon Ho Zhong Zhaowei Khoo Li Pheng School of Mechanical and Aerospace Engineering A*STAR Singapore Institute of Manufacturing Technology DRNTU::Engineering::Mechanical engineering::Mechatronics Permanent magnet linear motors have been increasingly used in many machine applications that need precise and high speed motions since the last decade. A major drawback which is the heat trap in the coil cannot be dissipated to the environment fast enough, and much of the heat is transferred to the carriage The thermally induced deformations and stresses of the carriage, due to high heat influx from the coil, will distort the carriage and any specimens fix on the carriage top. The resulting distortion will produce a positioning error. The lumped-parameter method is adopted here to model the temperature and heat flux from the joining top of the coil to the carriage. The model has several essential elements such as a heat source sub-model, heat loss convective coefficients for complex geometry, and contact conductance values between structure parts. The developed method for predicting the positioning error is real-timed and flexible to any process of a specific precision machine structure. DOCTOR OF PHILOSOPHY (MAE) 2013-04-11T04:13:09Z 2013-04-11T04:13:09Z 2013 2013 Thesis Chow, K. J. H. (2013). Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/51777 10.32657/10356/51777 en 236 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Mechatronics Chow, Kelvin Joon Ho Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title | Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title_full | Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title_fullStr | Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title_full_unstemmed | Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title_short | Methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| title_sort | methodologies development and analysis for obtaining boundary conditions of heat transfer in a linear motor driven stage |
| topic | DRNTU::Engineering::Mechanical engineering::Mechatronics |
| url | https://hdl.handle.net/10356/51777 |
| work_keys_str_mv | AT chowkelvinjoonho methodologiesdevelopmentandanalysisforobtainingboundaryconditionsofheattransferinalinearmotordrivenstage |