Modeling method for analytical model of equivalent and linear damping coefficient of magnetorheological damper

A magnetorheological damper and damping coefficient technology, applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve the problems of tediousness and large amount of calculation of the energy method, and achieve easy parameter identification, simple structure, convenient The effect of vibration control

Active Publication Date: 2014-01-15
HEFEI UNIV OF TECH
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Problems solved by technology

The energy method has a large amount of calculation and is cumbersome, so it is not suitable for real-time online acquisition of the equivalent linear damping coefficient of the magnetorheological damping shock absorber

Method used

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  • Modeling method for analytical model of equivalent and linear damping coefficient of magnetorheological damper
  • Modeling method for analytical model of equivalent and linear damping coefficient of magnetorheological damper
  • Modeling method for analytical model of equivalent and linear damping coefficient of magnetorheological damper

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Embodiment Construction

[0030] In this embodiment, the modeling method of the equivalent linear damping coefficient analytical model of the magnetorheological damper is carried out as follows:

[0031]Step 1: Apply the MTS mechanical measurement system to conduct mechanical performance experiments on the magnetorheological damper that needs to establish an equivalent linear damping coefficient analytical model, and obtain the sample data of the damping force time curve and the displacement time curve of the magnetorheological damper, MTS mechanics The measurement system adopts the method of sinusoidal displacement excitation, and changes the input voltage V, sinusoidal displacement excitation amplitude X and excitation frequency Ω of the magneto-rheological damper to obtain different working conditions. Among them, the input voltage V has L elements, and the sinusoidal displacement excitation The amplitude X has M elements, and the excitation frequency Ω has N elements. A total of L×M×N groups of expe...

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Abstract

The invention discloses a modeling method for an analytical model of equivalent and linear damping coefficient of a magnetorheological damper. The modeling method is characterized by comprising the following steps: acquiring sampled data of the magnetorheological damper through MTS mechanics measuring system experimentation; utilizing dissipation energy in a period of the magnetorheological damper to calculate equivalent and linear damping coefficient of the magnetorheological damper in different working conditions; adopting linear fitting and power function fitting to construct relation of parameters of three independent working conditions to the equivalent and linear damping coefficient respectively; conducting coupling calculation to acquire analytical models of equivalent and linear damping coefficients of the magnetorheological damper in the three independent working conditions; adopting least square pseudo-inverse method to identify the parameters to be identified of the analytical models of the equivalent and linear damping coefficients with the assistance of experimentation sampled data. The modeling method can be used for modeling an equivalent dynamic model of the magnetorheological damper, can be used for stability analysis of a structure system in which the magnetorheological damper is mounted, and can be used for predicting and determining the property of the magnetorheological damper.

Description

technical field [0001] The invention belongs to the field of mechanical system dynamic modeling and vibration control. Specifically, the invention relates to a method for modeling an equivalent linear damping coefficient analytical model of a magneto-rheological damper. Background technique [0002] The magnetorheological damping shock absorber is a new type of semi-active shock absorber with simple structure, fast response speed and continuously adjustable damping force. After decades of research and development, it is more and more widely used in vehicle engineering , buildings and bridges and other structural systems. At present, the mechanical models of magnetorheological damping shock absorbers can be divided into two categories: parametric models and non-parametric models. Parametric models mainly include: Bingham model, nonlinear double-viscosity model, modified Bouc_Wen model, modified Dahl model, phenomenological model, etc. These are basically composed of nonline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 陈恩伟郭耀辉夏增强陆益民刘正士王勇包猛
Owner HEFEI UNIV OF TECH
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