| DOI | Resolve DOI: https://doi.org/10.1115/1.4046383 |
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| Author | Search for: Fereidooni, Amin1; Search for: Graham, Silas1; Search for: Chen, Eric1; Search for: Wickramasinghe, Viresh1 |
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| Affiliation | - National Research Council Canada. Aerospace
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| Format | Text, Article |
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| Physical description | 13 p. |
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| Subject | actuators; control equipment; filters; vibration; simulation; elastomers; vibration control; computer simulation |
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| Abstract | This paper presents the experimental and numerical investigation of a single-axis replicate of a patented multi-axis active vibration isolation seat mount. Following the design of the multi-axis system, this single axis vibration isolation mount uses a flexible elastomer support placed in parallel with an electromagnetic actuator. This mount is designed to reduce the N/rev harmonic vibration of a helicopter using a filtered-X least mean square (FXLMS)-based controller. To improve the efficiency of the FXLMS controller for this application, the ISO-2631-1 Wₖ filter is added. Employing this modified controller, the experimental setup is tested using a payload mass representative of a 95th percentile pilot. The experimental results confirm the effectiveness of the proposed design in canceling the unwanted helicopter vibration, where the active mount effectively reduces the vibration representative of a Bell-412 helicopter by 69.37% (−10.28 dB, g-rms). In order to develop a better understanding of the problem, the system is also modeled from first principles in simulink. The comparison between the nonlinear numerical model and the experimental results demonstrates a good agreement between the two approaches. Moreover, it is shown that the addition of the ISO-2631-1 Wₖ filter improves the transient performance of the FXLMS controller for the given helicopter vibration profile. |
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| Publication date | 2020-03-11 |
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| Publisher | American Society of Mechanical Engineers |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 528a5e8a-0f29-4e9d-a760-acc5384eed38 |
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| Record created | 2022-05-16 |
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| Record modified | 2022-05-16 |
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