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Research on Multi-Mode Switching Strategy for Electromagnetic Suspension Hunan University
- Format:
- Book
- Conference/Event
- Author/Creator:
- Zeng, Sheng, author.
- Conference Name:
- SAE 2024 Intelligent Urban Air Mobility Symposium (2024-09-06 : Hangzhou, China)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2024
- Summary:
- This study proposes a multi-mode switching control strategy based on electromagnetic damper suspension (EMDS) to address the different performance requirements of suspension systems on variable road surfaces. The working modes of EMDS are divided into semi-active damping mode and energy harvest mode, and the proposed mode switching threshold is the weighted root mean square value of acceleration. For the semi-active damping mode, a controller based on LQR(Linear Quadratic Regulator) was designed, and a variable resistance circuit was also designed to meet the requirements of the semi-active mode, which optimized the damping effect relative to passive suspension. For the energy harvest mode, an energy harvest circuit was designed to recover vibration energy. In order to reduce the deterioration of suspension performance caused by frequent mode switching in the mode switching strategy, as frequent system switching can lead to system disorder, deterioration of damping effect, and reduction of energy harvest efficiency, two switching conditions are introduced to increase system stability, namely mode switching judgment frequency and sampling interval time. The setting of mode switching judgment frequency is to avoid sudden and occasional switching, while the setting of sampling interval time is to obtain a more reasonable weighted acceleration root mean square value. By selecting these two parameters reasonably, the stability and effect of mode switching can be optimized. The results indicate that the multi-mode switching control strategy can achieve reasonable switching of electromagnetic suspension in two modes, achieving good vibration reduction effect and certain energy harvest capability
- Notes:
- Vendor supplied data
- Publisher Number:
- 2024-01-7005
- Access Restriction:
- Restricted for use by site license
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