Vibration reduction of H/Shaft using an electromagnetic damper with mode change
| Autor: | Jeong-Hyeon Bak, J. L. Park, Kwang-Hee Lee, Changhee Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry 020302 automobile design & engineering Natural frequency 02 engineering and technology Structural engineering Damper Vibration 020303 mechanical engineering & transports Amplitude 0203 mechanical engineering Active vibration control Tuned mass damper Automotive Engineering business Damping torque Actuator |
| Zdroj: | International Journal of Automotive Technology. 18:255-261 |
| ISSN: | 1976-3832 1229-9138 |
| DOI: | 10.1007/s12239-017-0025-5 |
| Popis: | The objective of this study is to develop a damper that can reduce the amplitude of vibration in various frequency ranges. Previous H/Shaft vibration reduction methods work in a passive way. A dynamic damper reduces the amplitude of vibration at its first mode, but vibration still appears at the second mode. A mass damper or hollow shaft can shift the natural frequency to a lower or higher region. The fixed operating frequency prevents vibration from being reduced outside the operating frequency range. The proposed damper uses electromagnets as either masses or actuators to change the damper mode between dynamic damper mode and mass damper mode. The electromagnetic damper (EMD) can change its mode to respond to the vibration excitation at both low and high frequencies. The vibration reduction performance was evaluated by FRF tests in laboratory and vehicle conditions. The results were compared with those of a dynamic damper and indicate that the amplitude of vibration is reduced by 95.6 % when the EMD is implemented on an H/Shaft, whereas only 61.9 % vibration reduction is achieved by the dynamic damper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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