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- Title
A Dual-Sided Hybrid Excitation Eddy Current Damper with High-Conductivity and High-Permeability Secondary Plate for Vibration Suppression Enhancement.
- Authors
Zhang, Chi; Sang, Na; Qiu, Shuheng; Chen, Silu; Li, Rong; Yang, Miao; Yang, Guilin
- Abstract
Background: The direct-drive linear motor system is usually a low-damping system, which will cause residual vibration and deteriorate the accuracy of the equipment especially in the high-speed start-stop motion. Purpose: By employing an eddy current damper (ECD), the residual vibration can be effectively reduced. However, the ECD secondary is normally made of a pure copper plate with low magnetic permeability, resulting in low airgap magnetic density and therefore small damping force. In this paper, a dual-sided hybrid excitation ECD which implements high-conductivity and high-permeability plate as the secondary is proposed to enhance the vibration suppression for the linear motor system. Methods: An analytical model is developed to quantitatively analyze the relationship between the damping force and the secondary thickness. Three dimensional finite element analysis (3D FEA) is employed to investigate the effects of different secondary materials and the secondary layer thicknesses on ECD performance. Results and Conclusion: Experiments are conducted to evaluate the damping force and the vibration suppression effect of the designed ECD. Compared with the pure copper secondary under the same secondary dimensions, the damping force is increased by 30.5% with the copper-steel-copper secondary, and the peak amplitude of the position error and the settling time of the system are reduced by 1.94 times and 1.80 times, respectively.
- Subjects
VIBRATION (Mechanics); FINITE element method; EDDIES; MAGNETIC permeability; COPPER plating; IONIC conductivity; ACOUSTIC radiation
- Publication
Journal of Vibration Engineering & Technologies, 2023, Vol 11, Issue 3, p1229
- ISSN
2523-3920
- Publication type
Article
- DOI
10.1007/s42417-022-00638-1