Nonlinear convergence active vibration absorber for single and multiple frequency vibration control
Autor: | Xi Wang, Bintang Yang, Wenqiang Zhao, Shufeng Guo |
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Rok vydání: | 2017 |
Předmět: |
0209 industrial biotechnology
Acoustics and Ultrasonics Mechanical Engineering Vibration control Estimator Voice coil 02 engineering and technology Condensed Matter Physics 01 natural sciences Vibration Nonlinear system Dynamic Vibration Absorber 020901 industrial engineering & automation Rate of convergence Mechanics of Materials Control theory 0103 physical sciences Convergence (routing) 010301 acoustics Mathematics |
Zdroj: | Journal of Sound and Vibration. 411:289-303 |
ISSN: | 0022-460X |
DOI: | 10.1016/j.jsv.2017.09.013 |
Popis: | This paper presents a nonlinear convergence algorithm for active dynamic undamped vibration absorber (ADUVA). The damping of absorber is ignored in this algorithm to strengthen the vibration suppressing effect and simplify the algorithm at the same time. The simulation and experimental results indicate that this nonlinear convergence ADUVA can help significantly suppress vibration caused by excitation of both single and multiple frequency. The proposed nonlinear algorithm is composed of equivalent dynamic modeling equations and frequency estimator. Both the single and multiple frequency ADUVA are mathematically imitated by the same mechanical structure with a mass body and a voice coil motor (VCM). The nonlinear convergence estimator is applied to simultaneously satisfy the requirements of fast convergence rate and small steady state frequency error, which are incompatible for linear convergence estimator. The convergence of the nonlinear algorithm is mathematically proofed, and its non-divergent characteristic is theoretically guaranteed. The vibration suppressing experiments demonstrate that the nonlinear ADUVA can accelerate the convergence rate of vibration suppressing and achieve more decrement of oscillation attenuation than the linear ADUVA. |
Databáze: | OpenAIRE |
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