Magneto-Rheological Fluid Semi-active Suspension Performance Testing

2003 ◽  
Author(s):  
Andrea C. Wray ◽  
Francis B. Hoogterp ◽  
Scott Garabedian ◽  
Eric Anderfaas ◽  
Brian Hopkins
Keyword(s):  
Performance Testing ◽  
Active Suspension ◽  
Magneto Rheological ◽  
Suspension Performance

scholarly journals Magneto-rheological dampers—model influence on the semi-active suspension performance

2019 ◽  
Vol 28 (10) ◽  
pp. 105030 ◽  
Author(s):  
Juan C Tudon-Martinez ◽  
Diana Hernandez-Alcantara ◽  
Luis Amezquita-Brooks ◽  
Ruben Morales-Menendez ◽  
Jorge de J Lozoya-Santos ◽  
...  
Keyword(s):  
Active Suspension ◽  
Magneto Rheological ◽  
Suspension Performance

scholarly journals FxLMS Method for Suppressing In-Wheel Switched Reluctance Motor Vertical Force Based on Vehicle Active Suspension System

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Yan-yang Wang ◽  
Yi-nong Li ◽  
Wei Sun ◽  
Chao Yang ◽  
Guang-hui Xu
Keyword(s):  
Vertical Component ◽  
Active Suspension ◽  
Radial Force ◽  
Suspension System ◽  
Vertical Force ◽  
Least Mean Square ◽  
Active Suspensions ◽  
Switched Reluctance ◽  
Resonance Frequencies ◽  
Suspension Performance

The vibration of SRM obtains less attention for in-wheel motor applications according to the present research works. In this paper, the vertical component of SRM unbalanced radial force, which is named as SRM vertical force, is taken into account in suspension performance for in-wheel motor driven electric vehicles (IWM-EV). The analysis results suggest that SRM vertical force has a great effect on suspension performance. The direct cause for this phenomenon is that SRM vertical force is directly exerted on the wheel, which will result in great variation in tyre dynamic load and the tyre will easily jump off the ground. Furthermore, the frequency of SRM vertical force is broad which covers the suspension resonance frequencies. So it is easy to arouse suspension resonance and greatly damage suspension performance. Aiming at the new problem, FxLMS (filtered-X least mean square) controller is proposed to improve suspension performance. The FxLMS controller is based on active suspension system which can generate the controllable force to suppress the vibration caused by SRM vertical force. The conclusion shows that it is effective to take advantage of active suspensions to reduce the effect of SRM vertical force on suspension performance.

scholarly journals Parametric numerical study of electrohydraulic active suspension performance against passive suspension

2018 ◽  
Vol 57 (4) ◽  
pp. 3609-3614 ◽  
Author(s):  
Mahmoud Omar ◽  
M.M. El-kassaby ◽  
Walid Abdelghaffar
Keyword(s):  
Numerical Study ◽  
Active Suspension ◽  
Passive Suspension ◽  
Suspension Performance

Electromechanical Suspension Performance Testing

2001 ◽  
Author(s):  
W. Bylsma ◽  
A. M. Guenin ◽  
J. H. Beno ◽  
D A. Weeks ◽  
D. A. Bresie ◽  
...  
Keyword(s):  
Performance Testing ◽  
Suspension Performance

Experimental study on shock control of a vehicle semi-active suspension with magneto-rheological damper

2020 ◽  
Vol 29 (7) ◽  
pp. 074002 ◽  
Author(s):  
Xiumei Du ◽  
Miao Yu ◽  
Jie Fu ◽  
Chaoqun Huang
Keyword(s):  
Experimental Study ◽  
Active Suspension ◽  
Shock Control ◽  
Magneto Rheological

Research on the Decoupling Control Algorithm of Full Vehicle Semi-Active Suspension

2012 ◽  
Vol 479-481 ◽  
pp. 1355-1360
Author(s):  
Jian Guo Chen ◽  
Jun Sheng Cheng ◽  
Yong Hong Nie
Keyword(s):  
Differential Geometry ◽  
Control Algorithm ◽  
Active Suspension ◽  
Suspension System ◽  
Decoupling Control ◽  
Vehicle Suspension ◽  
Full Vehicle ◽  
Vibration Attenuation ◽  
Magneto Rheological ◽  
Suspension Model

Vehicle suspension is a MIMO coupling nonlinear system; its vibration couples that of the tires. When magneto-rheological dampers are adopted to attenuate vibration of the sprung mass, the damping forces of the dampers need to be distributed. For the suspension without decoupling, the vibration attenuation is difficult to be controlled precisely. In order to attenuate the vibration of the vehicle effectively, a nonlinear full vehicle semi-active suspension model is proposed. Considering the realization of the control of magneto-rheological dampers, a hysteretic polynomial damper model is adopted. A differential geometry approach is used to decouple the nonlinear suspension system, so that the wheels and sprung mass become independent linear subsystems and independent to each other. A control rule of vibration attenuation is designed, by which the control current applied to the magneto-rheological damper is calculated, and used for the decoupled suspension system. The simulations show that the acceleration of the sprung mass is attenuated greatly, which indicates that the control algorithm is effective and the hysteretic polynomial damper model is practicable.

Control Bifurcations in a Nonlinear Active Suspension System for System Design

2005 ◽  
Author(s):  
Amit Shukla ◽  
Jeong Hoi Koo
Keyword(s):  
Control System ◽  
Ride Comfort ◽  
Active Suspension ◽  
Nonlinear Damping ◽  
Suspension System ◽  
Suspension Systems ◽  
System A ◽  
Controlled Systems ◽  
Automotive Suspension ◽  
Magneto Rheological

Nonlinear active suspension systems are very popular in the automotive applications. They include nonlinear stiffness and nonlinear damping elements. One of the types of damping element is a magneto-rheological fluid based damper which is receiving increased attention in the applications to the automotive suspension systems. Latest trends in suspension systems also include electronically controlled systems which provide advanced system performance and integration with various processes to improve vehicle ride comfort, handling and stability. A control bifurcation of a nonlinear system typically occurs when its linear approximation loses stabilizability. These control bifurcations are different from the classical bifurcation where qualitative stability of the equilibrium point changes. Any nonlinear control system can also exhibit control bifurcations. In this paper, control bifurcations of the nonlinear active suspension system, modeled as a two degree of freedom system, are analyzed. It is shown that the system looses stability via Hopf bifurcation. Parametric control bifurcation analysis is conducted and results presented to highlight the significance of the design of control system for nonlinear active suspension system. A framework for the design of feedback using the parametric analysis for the control bifurcations is proposed and illustrated for the nonlinear active suspension system.

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