A Lumped-Parameter Model for Adaptive Dynamic MR Damper Control

被引：20
作者：
Case, David [1 ,2 ]
Taheri, Behzad [1 ]
Richer, Edmond [2 ]
机构：
[1] So Methodist Univ, Dallas, TX 75205 USA
[2] So Methodist Univ, Biomed Instrumentat & Robot Lab, Dallas, TX 75205 USA
来源：
IEEE-ASME TRANSACTIONS ON MECHATRONICS | 2015年 / 20卷 / 04期
关键词：
Magnetic liquids; modeling; orthotics; FLUID DAMPERS;
D O I：
10.1109/TMECH.2014.2347898
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The dynamic behavior of a small-scale magnetorheological damper intended for use in a tremor-suppression orthosis is characterized through experimental analysis and mathematical modeling. The combined frequency response of both the electromagnetic coil and the fluid particles is modeled by a third-order transfer function. The output of this function is an effective current that, combined with piston position and velocity, is empirically related to the resistance force of the damper. The derived model demonstrates high-fidelity to experimental testing of the damper under variable piston velocity and applied current within the expected frequency range of pathological tremor. The model is, thus, deemed suitable for use in a control algorithm for the mechanical suppression of tremor via magnetorheological damping.
引用
收藏
页码：1689 / 1696
页数：8
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