Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark
Magnetic springs are a fatigue-free alternative to mechanical springs that could enable compliant actuation concepts in highly dynamic industrial applications. The goals of this article are: (1) to develop and validate a methodology for the optimal design of a magnetic spring and (2) to benchmark th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Actuators |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-0825/8/1/18 |
| _version_ | 1818209346359656448 |
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| author | Branimir Mrak Bert Lenaerts Walter Driesen Wim Desmet |
| author_facet | Branimir Mrak Bert Lenaerts Walter Driesen Wim Desmet |
| author_sort | Branimir Mrak |
| collection | DOAJ |
| description | Magnetic springs are a fatigue-free alternative to mechanical springs that could enable compliant actuation concepts in highly dynamic industrial applications. The goals of this article are: (1) to develop and validate a methodology for the optimal design of a magnetic spring and (2) to benchmark the magnetic springs at the component level against conventional solutions, namely, mechanical springs and highly dynamic servo motors. We present an extensive exploration of the magnetic spring design space both with respect to topology and geometry sizing, using a 2D finite element magnetostatics software combined with a multi-objective genetic algorithm, as a part of a MagOpt design environment. The resulting Pareto-optima are used for benchmarking rotational magnetic springs back-to-back with classical industrial solutions. The design methodology has been extensively validated using a combination of one physical prototype and multiple virtual designs. The findings show that magnetic springs possess an energy density 50% higher than that of state-of-the-art reported mechanical springs for the gigacycle regime and accordingly a torque density significantly higher than that of state-of-the-practice permanently magnetic synchronous motors. |
| first_indexed | 2024-12-12T04:59:15Z |
| format | Article |
| id | doaj.art-f2cc9dcfc83745c8a01c219ccc938a80 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-12-12T04:59:15Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-f2cc9dcfc83745c8a01c219ccc938a802022-12-22T00:37:16ZengMDPI AGActuators2076-08252019-02-01811810.3390/act8010018act8010018Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density BenchmarkBranimir Mrak0Bert Lenaerts1Walter Driesen2Wim Desmet3Department of Mechanical Engineering, Katholieke Universiteit Leuven, 3001 Leuven, BelgiumMotionS core lab, Flanders Make, 3001 Leuven, BelgiumMotionS core lab, Flanders Make, 3001 Leuven, BelgiumDepartment of Mechanical Engineering, Katholieke Universiteit Leuven, 3001 Leuven, BelgiumMagnetic springs are a fatigue-free alternative to mechanical springs that could enable compliant actuation concepts in highly dynamic industrial applications. The goals of this article are: (1) to develop and validate a methodology for the optimal design of a magnetic spring and (2) to benchmark the magnetic springs at the component level against conventional solutions, namely, mechanical springs and highly dynamic servo motors. We present an extensive exploration of the magnetic spring design space both with respect to topology and geometry sizing, using a 2D finite element magnetostatics software combined with a multi-objective genetic algorithm, as a part of a MagOpt design environment. The resulting Pareto-optima are used for benchmarking rotational magnetic springs back-to-back with classical industrial solutions. The design methodology has been extensively validated using a combination of one physical prototype and multiple virtual designs. The findings show that magnetic springs possess an energy density 50% higher than that of state-of-the-art reported mechanical springs for the gigacycle regime and accordingly a torque density significantly higher than that of state-of-the-practice permanently magnetic synchronous motors.https://www.mdpi.com/2076-0825/8/1/18magnetic springoptimal designcomponent benchmarkingcompliant actuationparallel elastic actuators (PEA)series elastic actuators (SEA) |
| spellingShingle | Branimir Mrak Bert Lenaerts Walter Driesen Wim Desmet Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark Actuators magnetic spring optimal design component benchmarking compliant actuation parallel elastic actuators (PEA) series elastic actuators (SEA) |
| title | Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark |
| title_full | Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark |
| title_fullStr | Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark |
| title_full_unstemmed | Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark |
| title_short | Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark |
| title_sort | optimal magnetic spring for compliant actuation validated torque density benchmark |
| topic | magnetic spring optimal design component benchmarking compliant actuation parallel elastic actuators (PEA) series elastic actuators (SEA) |
| url | https://www.mdpi.com/2076-0825/8/1/18 |
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