DESIGNING VIRTUAL VIBRATION ABSORBER WITH ADAPTABLE SPRING STIFFNESS FOR VIBRATIONS CONTROL UNDER HARMONIC EXCITATION WITH NOISE IN TIME-VARYING FREQUENCY

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SALIGHE SOHEIL; MOHAMMADI HOSSEIN

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:7 Page(s): 353-362

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Title

DESIGNING VIRTUAL VIBRATION ABSORBER WITH ADAPTABLE SPRING STIFFNESS FOR VIBRATIONS CONTROL UNDER HARMONIC EXCITATION WITH NOISE IN TIME-VARYING FREQUENCY

Author(s)

SALIGHE SOHEIL | MOHAMMADI HOSSEIN | Issue Writer Certificate

Keywords

VIBRATION ABSORBERQ2

ADAPTIVE CONTROLQ2

TIME-VARYING EXCITATION FREQUENCYQ1

NOISEQ2

Abstract

In the present article, a real mass-spring system under external excitation with time-varying frequency is studied. The external excitation causes additional oscillations in the real mass-spring system response which disrupt the path tracking procedure. ADAPTIVE CONTROL law, which is considered for annihilating the additional oscillations, is equal to a virtual VIBRATION ABSORBER stiffness of which regardless of the real system and external excitation uncertainties, can be updated based on the linear absorber theory until the natural frequency of the absorber reaches the excitation frequency. The variation of the frequency is based on the step and ramp function which are relatively equal to the sudden and transient change from the initial value to the final value of the frequency. Besides, the effects of the NOISE with various amplitudes existed in the transient variation of the frequency on updating the virtual absorber stiffness is developed. Simulation results are presented to demonstrate that the determined adaptation law guarantees the adaptation of virtual absorber stiffness considering excitation frequency variation based on both step function and ramp function and eliminates additional vibrations of the real system.

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APA: Copy

SALIGHE, SOHEIL, & MOHAMMADI, HOSSEIN. (2017). DESIGNING VIRTUAL VIBRATION ABSORBER WITH ADAPTABLE SPRING STIFFNESS FOR VIBRATIONS CONTROL UNDER HARMONIC EXCITATION WITH NOISE IN TIME-VARYING FREQUENCY. MODARES MECHANICAL ENGINEERING, 17(7 ), 353-362. SID. https://sid.ir/paper/179341/en

Vancouver: Copy

SALIGHE SOHEIL, MOHAMMADI HOSSEIN. DESIGNING VIRTUAL VIBRATION ABSORBER WITH ADAPTABLE SPRING STIFFNESS FOR VIBRATIONS CONTROL UNDER HARMONIC EXCITATION WITH NOISE IN TIME-VARYING FREQUENCY. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(7 ):353-362. Available from: https://sid.ir/paper/179341/en

IEEE: Copy

SOHEIL SALIGHE, and HOSSEIN MOHAMMADI, “DESIGNING VIRTUAL VIBRATION ABSORBER WITH ADAPTABLE SPRING STIFFNESS FOR VIBRATIONS CONTROL UNDER HARMONIC EXCITATION WITH NOISE IN TIME-VARYING FREQUENCY,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 7 , pp. 353–362, 2017, [Online]. Available: https://sid.ir/paper/179341/en

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