Effects of physical parameters and time-delay coefficients on the amplitude and frequency bandwidth of saturation controller for a nonlinear beam vibration. Issue 1 (January 2021)

• Record Type: Journal Article
• Authors: Dai, Han; Zhao, Yanying
• Is Part Of: Journal of physics. Volume 1750:Issue 1(2021)
• Publication Date: 2021-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1750/1/012025
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: This paper is focused on the effects of the physical parameters for saturation control bandwidth and the time-delay coefficient for the saturation control stability. The approximate analytical solutions are obtained when the primary external resonance and 1:2 internal resonance occur simultaneously. The effects of amplitude of excitation, nonlinear feedback coefficients and nonlinear coefficients on saturation control are investigated. It is shown that nonlinear feedback coefficients can enlarge the effective saturation control bandwidth and enhance the dynamic vibration absorber's suppression. Two nonlinear coefficients enhance the system's nonlinear phenomenon and remain the same saturation control regions. For the time-delay coefficient, the system begins to appear unstable saturation control regions with only a little time-delay. The increasing time-delay coefficients can enlarge the unstable saturation control regions, it should be avoided.