Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise
In this paper, we investigate the response of asymmetric potential monostable energy harvesters (MEHs) excited by color noise and band-limited noise. The motivation for this study is that environmental vibrations always have the characteristic of randomness, and it is difficult to modulate a perfect...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/2076-3417/11/19/9227 |
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| author | Shuangyan Liu Wei Wang |
| author_facet | Shuangyan Liu Wei Wang |
| author_sort | Shuangyan Liu |
| collection | DOAJ |
| description | In this paper, we investigate the response of asymmetric potential monostable energy harvesters (MEHs) excited by color noise and band-limited noise. The motivation for this study is that environmental vibrations always have the characteristic of randomness, and it is difficult to modulate a perfectly symmetric MEH. For the excitation of exponentially correlated color noise, the moment differential equation was applied to evaluate the output performance of the asymmetric potential MEHs. Numerical and theoretical analyses were carried out to investigate the influence of noise intensity and internal system parameters on the output power of the system. Our results demonstrate that the output performance of the asymmetric MEH decreases with the increase in the correlation time, which determines the character of the color noise. On the contrary, the increase in the asymmetric degree enhances the output power of the asymmetric MEH subjected to color noise. For the band-limited noise excitation, numerical simulation is undertaken to consider the response of the asymmetric MEHs, and outcomes indicate that the frequency bandwidth and center frequency have a significant influence on the output performance. Regarding the asymmetric potential, its appearance leads the MEHs to generate higher output power at lower frequencies and this phenomenon is more obvious with the increase in the degree of asymmetry. Finally, we observed that the characteristics of the response bandwidth of asymmetric MEHs subjected to band-limited noise excitation are similar to the response under harmonic excitation. |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T07:05:55Z |
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| spelling | doaj.art-9f94898f36f940998df766231142985c2023-11-22T15:49:37ZengMDPI AGApplied Sciences2076-34172021-10-011119922710.3390/app11199227Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited NoiseShuangyan Liu0Wei Wang1School of Civil Aviation, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaSchool of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, ChinaIn this paper, we investigate the response of asymmetric potential monostable energy harvesters (MEHs) excited by color noise and band-limited noise. The motivation for this study is that environmental vibrations always have the characteristic of randomness, and it is difficult to modulate a perfectly symmetric MEH. For the excitation of exponentially correlated color noise, the moment differential equation was applied to evaluate the output performance of the asymmetric potential MEHs. Numerical and theoretical analyses were carried out to investigate the influence of noise intensity and internal system parameters on the output power of the system. Our results demonstrate that the output performance of the asymmetric MEH decreases with the increase in the correlation time, which determines the character of the color noise. On the contrary, the increase in the asymmetric degree enhances the output power of the asymmetric MEH subjected to color noise. For the band-limited noise excitation, numerical simulation is undertaken to consider the response of the asymmetric MEHs, and outcomes indicate that the frequency bandwidth and center frequency have a significant influence on the output performance. Regarding the asymmetric potential, its appearance leads the MEHs to generate higher output power at lower frequencies and this phenomenon is more obvious with the increase in the degree of asymmetry. Finally, we observed that the characteristics of the response bandwidth of asymmetric MEHs subjected to band-limited noise excitation are similar to the response under harmonic excitation.https://www.mdpi.com/2076-3417/11/19/9227monostable harvesterasymmetric potentialcolor noiseband-limited noise |
| spellingShingle | Shuangyan Liu Wei Wang Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise Applied Sciences monostable harvester asymmetric potential color noise band-limited noise |
| title | Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise |
| title_full | Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise |
| title_fullStr | Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise |
| title_full_unstemmed | Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise |
| title_short | Response Analysis of Asymmetric Monostable Harvesters Driven by Color Noise and Band-Limited Noise |
| title_sort | response analysis of asymmetric monostable harvesters driven by color noise and band limited noise |
| topic | monostable harvester asymmetric potential color noise band-limited noise |
| url | https://www.mdpi.com/2076-3417/11/19/9227 |
| work_keys_str_mv | AT shuangyanliu responseanalysisofasymmetricmonostableharvestersdrivenbycolornoiseandbandlimitednoise AT weiwang responseanalysisofasymmetricmonostableharvestersdrivenbycolornoiseandbandlimitednoise |