A study on the efficiency improvement of a passive oil damper using an MR accumulator |
| |
Authors: | Young-Won Yun Seong-Min Lee Myeoung-Kwan Park |
| |
Affiliation: | (1) Centre for Mechanics of Micro-systems, School of Mechanical & Production Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;(2) School of Mechanical, Materials and Mechanics Engineering, University of Wollongong, Faculty of Engineering, NSW 2522, Australia |
| |
Abstract: | This study describes the development, modeling, and testing of a hybrid damper for semi-active suspension. The goal of this
study is to improve the performance of conventional passive oil dampers using a magneto-rheological (MR) accumulator that
consists of a gas accumulator and an MR device. The level of damping is continuously variable by means of control of the applied
current in an MR device that is fitted to a floating piston that separates the gas and oil chamber. A small MR device is used
to resist the movement of the floating piston. At first, a mathematical model that describes all flows within the damper is
formulated and developed in Matlab/Simulink. The MR device is also devised. A mathematical model is adopted to characterize
the performance of the device. The formulas derived for the different components of the damper force are combined into a full
damper model. Then, the applicability of the MR device to a conventional passive oil damper is tested in a manufactured test
environment and evaluated in terms of the damping force vs. the piston velocity. From the results, it is possible to ascertain
the MF device’s capability to work as a damper that can supply a variable damping force. Moreover, this research affords a
lot of new information about the applicability of MR devices and improvement of the damping force. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|