Results 181 to 190 of about 2,834 (212)

Adaptive identification of MR damper for vibration control

2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601), 2004
Magnetorheological (MR) damper is a promising semi-active device for vibration control of structures. This paper presents a simple mathematical model of MR damper with a small number of model parameters, which can express its hysteresis behavior of nonlinear dynamic friction mechanism of the MR fluid.
Takashi Terasawa, Chiharu Sakai, Hiromitsu Ohmori, Akira Sano   +3 more
openaire   +1 more source

Damper modeling for dynamic simulation of a large bus with MR damper

International Journal of Automotive Technology, 2011
In this study, a large bus is tested to measure its dynamic response by the single-lane change test and the rapid stop test. A full car model is established by ADAMS/Car for computer simulation. For multibody modeling of a large bus, user-defined templates are used in the simulation.
Y. Kim, S. Choi, J. Lee, W. Yoo, J. Sohn
openaire   +1 more source

Power Drivers for MR Dampers

2014
This chapter discusses some aspects of power drivers for MR dampers based on pulse-width modulation (PWM) amplifiers. These digital devices are inexpensive to make when using modern module-based switching circuitry, offer significant benefits in terms of lower power consumption and have been widely used within the automotive industry.
Janusz Gołdasz, Bogdan Sapiński
openaire   +1 more source

Frequency and current effects in a MR damper

International Journal of Vehicle Autonomous Systems, 2009
This paper deals with Magneto-Rheological (MR) damper modelling and identification. The effect of the frequency and current is analysed through a database of four experimental datasets with different displacement and current. The benchmarking of modified models of a literature model approach is done.
Jorge de J. Lozoya Santos, Ruben Morales Menendez, Ricardo A. Ramirez Mendoza, Elvira Nino Juarez   +3 more
openaire   +1 more source

Variable Transmission Compliance With an MR Damper

Aerospace, 2004
This paper presents a novel transmission design that consists of a parallel combination of an MR damper and a compliant element together acting in series with an actuator. By adjusting the magnetic field to vary the amount of damping, the transmission can be switched between compliant and effectively rigid modes.
E. R. Westervelt, J. P. Schmiedeler, G. Washington   +2 more
openaire   +1 more source

Mathematical Modelling and Design and of MR Dampers

Volume 2, 2004
Most magnetorheological (MR) fluid devices are fixed-pole valve mode devices where the fluid flows through a magnetically active valve. Controlling the strength of the magnetic field inside the valve allows the rheological properties of the MR fluid to be varied.
Weng W. Chooi, S. Olutunde Oyadiji
openaire   +1 more source

Vibration Suppression by Controlling an MR Damper

International Journal of Modern Physics B, 1999
For the semiactive vibration control, a variable damper and proper control systems are essential. In this research a controllable damper was designed using the MR fluids and its mechanical properties such as damping constant and response time were measured.
Doyoung Jeon, Chanho Park, Kiyang Park
openaire   +1 more source

Hierarchical fuzzy identification of MR damper

SPIE Proceedings, 2009
Magneto-rheological (MR) dampers, recently, have found many successful applications in civil engineering and numerous area of mechanical engineering. When an MR damper is to be used for vibration suppression, an inevitable problem is to determine the input voltage so as to gain the desired restoring force determined from the control law. This is the
Hao Wang, Haiyan Hu
openaire   +1 more source

Design and Experiment Study on the MR Damper

2010 Third International Conference on Information and Computing, 2010
To magnetic rheology damping existing device overheated, structural complicatedness, magnetic field utilization ratio low and problem of precipitating etc, accord with vehicle shock absorption proportional controlled for damping strength of damping device, design new-type magnetic rheology damping for vehicle that adopt external magnetic field bypass ...
Hou Zhongming, Yao Kai, Zhao Xiaowen, Tian Xinmin   +3 more
openaire   +1 more source

Study of the response time of MR dampers

SPIE Proceedings, 2009
Response time is an important parameter which determines the applied fields and practical vibration reduction effects of magnetorheological (MR) dampers. However, up to now, only a few papers discuss the test and analysis of response times. In this paper, the response time of a large-scale MR damper at different velocities and currents was firstly ...
Xinchun Guan, Pengfei Guo, Jinping Ou
openaire   +1 more source