scholarly journals Reducing Transmitted Vibration Using Delayed Hysteretic Suspension

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Lahcen Mokni ◽  
Mohamed Belhaq
Keyword(s):  
Time Delay ◽  
Perturbation Analysis ◽  
Analytical Study ◽  
Vibration Isolation ◽  
Nonlinear Damping ◽  
Quarter Car Model ◽  
Car Model ◽  
Pneumatic Chamber ◽  
Experimental Works ◽  
Quarter Car

Previous numerical and experimental works show that time delay technique is efficient to reduce transmissibility of vibration in a single pneumatic chamber by controlling the pressure in the chamber. The present work develops an analytical study to demonstrate the effectiveness of such a technique in reducing transmitted vibrations. A quarter-car model is considered and delayed hysteretic suspension is introduced in the system. Analytical predictions based on perturbation analysis show that a delayed hysteretic suspension enhances vibration isolation comparing to the case where the nonlinear damping is delay-independent.

Modeling and Control of Magnetorheological Dampers for Vibration Isolation

2003 ◽  
Author(s):  
A. Narimani ◽  
M. F. Golnaraghi
Keyword(s):  
Vibration Isolation ◽  
Mr Damper ◽  
Damping Force ◽  
Isolation System ◽  
Modeling And Control ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car ◽  
Set Up ◽  
And Control

Semi-active isolators offer significant improvement in performance over passive isolators. These systems benefit from the advantages of active systems with the reliability of the passive systems. In this work we study a vibration isolation system with a magnetorheological (MR) damper. The experimental investigation of the mechanical properties of a commercially available linear MR damper (RD-1005-3) was conducted next. The mathematical Bouc-Wen model was adopted to predict the performance of MR damper. In addition, a modified Bingham model has been developed to characterize the damper behavior more accurately and efficiently. The measured hysteresis characteristics of field-dependent damping forces are compared with the simulation results from the described mathematical models. The accuracy of a damping-force controller using the proposed method is also demonstrated experimentally. Finally, a scaled quarter car model is set up to study the performance of the control strategy. The experimental results show that with the semi-active control the vibration of the quarter car model is well controlled.

Vibration Isolation of the Quarter Car Model of Road Vehicle System using Dynamic Vibration Absorber

2020 ◽  
Vol 12 (5) ◽  
Author(s):  
Sakshi Sharma ◽  
Rakesh Chandmal Sharma ◽  
Sunil Kumar Sharma ◽  
Neeraj Sharma ◽  
Srihari Palli ◽  
...  
Keyword(s):  
Transfer Function ◽  
Vibration Isolation ◽  
Vibration Absorber ◽  
Dynamic Vibration Absorber ◽  
Road Vehicle ◽  
Quarter Car Model ◽  
Car Model ◽  
Dynamic Vibration ◽  
Vehicle System ◽  
Quarter Car

In cases where the natural frequencies of vibrations of a vehicle system are closed to the excitation frequencies from the road surface, dynamic vibration absorber provides the vibration isolation by shifting the resonant frequencies of the system. In the present work, the performance of a dynamic vibration absorber is evaluated with two degrees of freedom quarter car model of a road vehicle system when excited with deterministic inputs. The transmissibility of vibrations from the track to the sprung mass, the transfer function of sprung mass acceleration, the transfer function of suspension deflection and the transfer function of tire deflection is determined.

Non-Dimensional Analysis of the Performance of Semiactive Vehicle Suspensions

2007 ◽  
Author(s):  
Mehdi Ahmadian ◽  
Emmanuel Blanchard
Keyword(s):  
Vibration Isolation ◽  
Hybrid Control ◽  
Control Policy ◽  
Vertical Acceleration ◽  
Passenger Cars ◽  
Comfort Index ◽  
Response Characteristics ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car

An analytical study that evaluates the response characteristics of a two-degree-of freedom quarter-car model using passive and semi-active dampers is provided as an extension to the results published by Chalasani for active suspensions. The behavior of a semi-actively suspended vehicle is evaluated using the hybrid control policy, and compared to the behavior of a passively suspended vehicle. The relationship between vibration isolation, suspension deflection, and road-holding is studied for the quarter-car model. Three performance indices are used as a measure of vibration isolation (which can be seen as a comfort index), suspension travel requirements, and road-holding quality. These indices are based on the mean square responses to a white noise velocity input for three motion variables: the vertical acceleration of the sprung mass, the deflection of the suspension, and the deflection of the tire, respectively. The results of this study indicate that the hybrid control policy yields better comfort than a passive suspension, without reducing the road-holding quality or increasing the suspension displacement for typical passenger cars.

Magnetorheological damper in semi-active vehicle suspension system using SDRE control for a quarter car model

2018 ◽  
Author(s):  
Maria Aline Gonçalves ◽  
Rodrigo Tumolin Rocha ◽  
Frederic Conrad Janzen ◽  
José Manoel Balthazar ◽  
Angelo Marcelo Tusset
Keyword(s):  
Suspension System ◽  
Magnetorheological Damper ◽  
Vehicle Suspension ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car ◽  
Vehicle Suspension System ◽  
Active Vehicle Suspension System

An insight into linear quarter car model accuracy

2010 ◽  
Vol 49 (3) ◽  
pp. 463-480 ◽  
Author(s):  
Damien Maher ◽  
Paul Young
Keyword(s):  
Model Accuracy ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car ◽  
Insight Into

Response of a quarter car model with optimal magnetorheological damper parameters

2013 ◽  
Vol 332 (9) ◽  
pp. 2191-2206 ◽  
Author(s):  
R.S. Prabakar ◽  
C. Sujatha ◽  
S. Narayanan
Keyword(s):  
Magnetorheological Damper ◽  
Quarter Car Model ◽  
Car Model ◽  
Quarter Car
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