Analysis of transient electromagnetic fields in electromagnetic rail launcher using an adaptive recursive algorithm
•A dynamic electromagnetic field model for the H-shaped armature, considering geometry and skin effect.•An adaptive recursive algorithm is developed to improve computational efficiency and accuracy.•The method achieves an armature muzzle velocity error below 2.28%, demonstrating high precision.•Expe...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials Jg. 622; S. 172955 |
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15.06.2025
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| Abstract | •A dynamic electromagnetic field model for the H-shaped armature, considering geometry and skin effect.•An adaptive recursive algorithm is developed to improve computational efficiency and accuracy.•The method achieves an armature muzzle velocity error below 2.28%, demonstrating high precision.•Experimental validation demonstrates the effectiveness and reliability of the model and solution method.
Modeling the electromagnetic rail launch is a critical aspect that provides solid theoretical support for the design and optimization of launch systems. This paper comprehensively considers factors such as armature shape, rail shape, and the skin effect of current to establish a dynamic electromagnetic field model for an H-shaped armature in electromagnetic rail launch. To achieve efficient solutions, an adaptive recursive numerical analysis method is proposed. This method recursively segments the integration intervals of various variables and employs adaptive Simpson’s numerical integration for regression once the integration nodes are determined. This successfully enables the rapid resolution of the dynamic electromagnetic field model, yielding a time-varying inductance gradient. Subsequently, the Runge-Kutta method is used to calculate the velocity and displacement curves of the armature. Experimental validation of the model indicates a 2.28% error in the calculated muzzle velocity of the armature and a maximum error of 4.48% during the launch process. These results strongly validate the proposed model and the adaptive recursive numerical analysis method, providing strong evidence for theoretical analysis in electromagnetic launch technology. |
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| AbstractList | •A dynamic electromagnetic field model for the H-shaped armature, considering geometry and skin effect.•An adaptive recursive algorithm is developed to improve computational efficiency and accuracy.•The method achieves an armature muzzle velocity error below 2.28%, demonstrating high precision.•Experimental validation demonstrates the effectiveness and reliability of the model and solution method.
Modeling the electromagnetic rail launch is a critical aspect that provides solid theoretical support for the design and optimization of launch systems. This paper comprehensively considers factors such as armature shape, rail shape, and the skin effect of current to establish a dynamic electromagnetic field model for an H-shaped armature in electromagnetic rail launch. To achieve efficient solutions, an adaptive recursive numerical analysis method is proposed. This method recursively segments the integration intervals of various variables and employs adaptive Simpson’s numerical integration for regression once the integration nodes are determined. This successfully enables the rapid resolution of the dynamic electromagnetic field model, yielding a time-varying inductance gradient. Subsequently, the Runge-Kutta method is used to calculate the velocity and displacement curves of the armature. Experimental validation of the model indicates a 2.28% error in the calculated muzzle velocity of the armature and a maximum error of 4.48% during the launch process. These results strongly validate the proposed model and the adaptive recursive numerical analysis method, providing strong evidence for theoretical analysis in electromagnetic launch technology. |
| ArticleNumber | 172955 |
| Author | Zhang, Yu-ting Wang, Zhen-chun |
| Author_xml | – sequence: 1 givenname: Yu-ting surname: Zhang fullname: Zhang, Yu-ting organization: Intelligent control system and intelligent equipment engineering center of the Ministry of education, Hebei Province, Qinhuangdao 066004, China – sequence: 2 givenname: Zhen-chun surname: Wang fullname: Wang, Zhen-chun email: zcwang@ysu.edu.cn organization: Intelligent control system and intelligent equipment engineering center of the Ministry of education, Hebei Province, Qinhuangdao 066004, China |
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| Cites_doi | 10.1109/TPS.2022.3205269 10.1109/TMAG.2002.805906 10.1016/j.dt.2018.07.022 10.1109/TPS.2017.2706719 10.1109/JSEN.2018.2872838 10.1109/TPS.2019.2907928 10.1109/ACCESS.2024.3395926 10.1016/j.dt.2018.07.009 10.1109/ELT.2004.1398109 10.1016/j.dt.2019.12.007 10.1109/TPS.2020.3016930 10.1109/TPS.2013.2255627 |
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| Keywords | H-shaped armature Adaptive recursive algorithm Numerical analysis Electromagnetic rail launch Dynamic electromagnetic field |
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| SubjectTerms | Adaptive recursive algorithm Dynamic electromagnetic field Electromagnetic rail launch H-shaped armature Numerical analysis |
| Title | Analysis of transient electromagnetic fields in electromagnetic rail launcher using an adaptive recursive algorithm |
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