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Abstract

This paper presents a study of a beam-like semi-active electromagnetic vibration absorber (EVA). The EVA consists of a flexible ferromagnetic cantilever beam, a ferromagnetic mass attached to the free end of the beam, and an E-shaped electromagnet. By changing the current of the electromagnet, the interactive force between the ferromagnetic mass and the electromagnet is varied accordingly, hence, the stiffness of this EVA is online tunable. The working frequency of the EVA is adjusted simultaneously as well. A finite element method (FEM) analysis study has been carried out to determine the characterization of the EVA. The effective stiffness of the absorber from FEM agrees with the results from the experiment well. A 2 degree-of-freedom experimental semi-active control system is built up to test the effectiveness of the EVA design. The performance under both steady-state exciting and sweeping frequency exciting show the EVA effectiveness in vibration suppression.

Keywords

Beam-like electromagnetic vibration absorber cantilever beam electromagnetic simulation semi-active control tunable stiffness

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References

Balandin

Bolotnik

Pilkey

(2005) Pre-acting control for shock and impact isolation systems. Shock and Vibration 12: 49–65.

Choi

Lee

Chang

(2001) Field test results of a semi-active ER suspension system associated with skyhook controller. Mechatronics 11: 345–353.

Davis

Lesieutre

(2000) An actively tuned solid-state vibration absorber using capacitive shunting of piezoelectric stiffness. Journal of Sound and Vibration 232: 601–617.

Den Hartog

(2013) Mechanical Vibrations, Mineola, NY: Dover Publications.

Den Hartog

Ormondroyd

(1928) Theory of the dynamic vibration absorber. Journal of Applied Mechanics 50: 11–22.

Doubrawa Filho

Luersen

Bavastri

(2011) Optimal design of viscoelastic vibration absorbers for rotating systems. Journal of Vibration and Control 17: 699–710.

Dupont

Kasturi

Stokes

(1997) Semi-active control of friction dampers. Journal of Sound and Vibration 202: 203–218.

Hunt

(1979) Dynamic Vibration Absorbers, London: Mechanical Engineering Publications.

(2012) Semi-active on–off damping control of a dynamic vibration absorber using Coriolis force. Journal of Sound and Vibration 331: 3429–3436.

10.

Liu

(2006) A tunable electromagnetic vibration absorber: characterization and application. Journal of Sound and Vibration 295: 708–724.

11.

Mead

Meador

(1998) Passive Vibration Control, Chichester, UK: Wiley.

12.

Milecki

(2001) Investigation and control of magneto–rheological fluid dampers. International Journal of Machine Tools and Manufacture 41: 379–391.

13.

Nagaya

Kurusu

Ikai

(1999) Vibration control of a structure by using a tunable absorber and an optimal vibration absorber under auto-tuning control. Journal of Sound and Vibration 228: 773–792.

14.

Onoda

Minesugi

(1996) Alternative control logic for type-II variable-stiffness system. AIAA Journal 34: 207–209.

15.

Onoda

Endot

Tamaoki

(1991) Vibration suppression by variable-stiffness members. AIAA Journal 29: 977–983.

16.

Onoda

Sanot

Kamiyama

(1992) Active, passive, and semiactive vibration suppression by stiffness variation. AIAA Journal 30: 2922–2929.

17.

Patten

Sack

(1996) Controlled semiactive hydraulic vibration absorber for bridges. Journal of Structural Engineering 122: 187–192.

18.

Shen

Y-J

Wang

Yang

S-P

(2013) Nonlinear dynamical analysis and parameters optimization of four semi-active on-off dynamic vibration absorbers. Journal of Vibration and Control 19: 143–160.

19.

Williams

Chiu

Bernhard

(2002) Adaptive-passive absorbers using shape-memory alloys. Journal of Sound and Vibration 249: 835–848.

A study of a beam-like electromagnetic vibration absorber

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