Modelling and simulation of magneto-rheological damper based semi-active control system

Abstract

The new materials have revealed the development of technology that has been utilized to promote the presentation of constructions to efficiently suppress vibration. Recently, considering the controllable fluids and its applications by researchers have increased with given their benefits such as lower power requirements, mechanical simplicity and large force capacity to a semi-active control system. The fluids which are used in Magnetorheological dampers improved their mechanical features. The current excitation change that is created by the damper force is applied to the eectromagnet that is present in the inner side of the damper. To use the benefit of this notable tool, a supreme model is needed to be able to precisely estimate damping force according to superior present the behavior of hysteresis damper. The Spencer model has been widely utilized for MR damper to characterize hysteresis behavior because of supreme covrege of nonlinear area of hysteresis loop among of parametric model. Despite this, the simulation and experimental results still have significant variations. Here, it is used a novelty model according to the Spencer model to simulate the nonlinear hysteretic behavior of damper by recognizing the, current, frequency, and amplitude excitations as displacement and velocity as input variables. This proposed model has a better advantage than the Spencer model traditionally the unknown parameters in which if a various grouping of excitation parameters is preferred, it should be re-evaluated. Experimental results were performed in the damping force testing machine to validate the simulations. Sinusoidal displacement input was provided to the laboratory test damper. For this paper, the force that are caused by the hysteresis damping forces estimated by the advanced model are confirmed by various frequency, current and amplitude excitations with using of MATLAB simulations. Simulation prediction have high similarity with experimental results which validates the model’s capability to estimate the hysteresis damping force precisely.