Dual Hysteresis Model of MR Dampers

Abstract

This study concerns the modeling of the hysteretic behavior of magnetorheological (MR) dampers. In general, hysteresis is one of key factors influencing the output of such actuators. So far, more attention has been paid to studying the combined hysteretic behavior of MR actuators by observing the relationships between the output (force/torque) and the inputs (current, velocity, and position). However, these devices feature two distinct hysteretic mechanisms: mechanical/hydraulic and magnetic. The mechanical hysteresis is of different nature than the magnetic hysteresis due to the properties of ferromagnetic materials forming the actuator's electromagnet circuit, and these should be split in the modeling process. In the present study, we separate the magnetic hysteresis from the mechanical/hydraulic one by investigating the magnetic flux vs. exciting current relationship of a commercial flow-mode MR damper subjected to sinusoidal current loading and independently of the mechanical excitations. The resulting behavior of the electromagnetic circuit is then examined using the non-linear inductor approach with hysteresis. Total hysteresis is then modeled using a non-linear inductor model in combination with a phenomenological parametric Maxwell type model of the damper.

An invertible hysteresis model for magnetorheological damper with improved adaption capability in frequency and amplitude

“…The second model is proposed by Spencer [26] and this one is modified based on the Bouc-Wen model, which is a commonly used hysteresis model. The form is shown as the equation (21),…”

“…However, the inherent strong nonlinear hysteresis characteristic of MR dampers makes the modeling difficult [20]. There are two kinds of factors that contribute to the hysteresis phenomenon: magnetic hysteresis and mechanical hysteresis [21], since the mechanism of hysteresis formation is complex, the typical method to describe the hysteresis phenomenon is parameter fitting based on experimental data and the model using this method is called parameterized models [1].…”

Examination of a Magnetorheological Damper Control System with Vibration Energy Harvesting

“…The damper features two distinct hysteretic mechanisms of differing natures, mechanical/hydraulic (see force-velocity loops at various current levels in Fig. 4b) and magnetic (resulting from properties of ferromagnetic materials forming the device's electromagnet circuit) [20]. The coil resistance Rd of the RD-8040-1 damper is 5.5 Ω and the coil inductance Ld is 125 mH.…”

Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

“…In the construction industry, the effectiveness of installing semiactive hydraulic dampers along the diagonal direction of the rectangular frame of a main structure has been verifed to reduce the damage to buildings and bridges caused by earthquakes [14][15][16]. In addition, magnetorheological (MR) dampers, which use a magnetic feld, have been developed to improve the performance of cylinder-type hydraulic dampers, and several research results have been published [17][18][19][20][21][22].…”