Parametric Study of the Spring Force Line Effect on Vehicle Self Steer for MacPherson Strut Suspension System

2006 ◽  
Author(s):  
Shinichi Nishizawa ◽  
Winda Ruiz ◽  
Tadashi Sakai ◽  
Maiko Ikeda
Keyword(s):  
Parametric Study ◽  
Suspension System ◽  
Force Line ◽  
Macpherson Strut Suspension ◽  
Spring Force ◽  
Macpherson Strut

Kinematic and Dynamic Analysis for a New MacPherson Strut Suspension System

2020 ◽  
Vol 22 (4) ◽  
pp. 1223-1238 ◽  
Author(s):  
S. Dehbari ◽  
J. Marzbanrad
Keyword(s):  
Dynamic Analysis ◽  
Vertical Displacement ◽  
Geometrical Model ◽  
Suspension System ◽  
Front Suspension ◽  
Multibody Model ◽  
Macpherson Strut Suspension ◽  
Two Degree Of Freedom ◽  
Macpherson Strut ◽  
Unsprung Mass

AbstractThe present paper undertakes kinematic and dynamic analysis of front suspension system. The investigated model is a full-scale Macpherson which is a multibody system. Two degree of freedom model is considered here to illustrate the vertical displacement of sprung mass and unsprung mass with using displacement matrix. Ride and handling parameters including displacement of sprung and unsprung masses, camber/caster angle, and track changes are derived from the relationships. Moreover, geometrical model and equations are validated by Adams/Car software. The kinematic and dynamic results have been compared in both analytical and numerical outputs for verification. The proposed analytical model shows less than 5% differences with a complicated multibody model.

Numerical Kinematic Analysis of the MacPherson Strut Motor-Vehicle Suspension System

2000 ◽  
Author(s):  
Hazem A. Attia ◽  
Maher G. Mohamed
Keyword(s):  
Numerical Algorithm ◽  
Kinematic Analysis ◽  
Elementary Mathematics ◽  
Motor Vehicle ◽  
Suspension System ◽  
Vehicle Suspension ◽  
Numerical Example ◽  
Macpherson Strut Suspension ◽  
Vehicle Suspension System ◽  
Macpherson Strut

Abstract In the present paper, an efficient numerical algorithm for the kinematic analysis of the multi-loop MacPherson Strut suspension system is formulated. The suspension system is usually used for front as well as axles of current car productions. The spatial two-DOF multi-loop MacPherson Strut suspension mechanism contains all types of basic kinematic joints; revolute, prismatic, and spherical joints. The kinematic analysis is carried out in terms of the rectangular Cartesian coordinates of some defined points in the links and at the joints. The presented formulation in terms of this system of coordinates is simple and involves · only elementary mathematics. A numerical example is presented.

Design Improvement of MacPherson Strut Suspension System for Lighter Vehicle

2021 ◽  
pp. 69-82
Author(s):  
Yonas Hailemariam Alemayohu ◽  
Ramesh Babu Nallamothu ◽  
Anantha Kamal Nallamothu ◽  
Seshu Kishan Nallamothu
Keyword(s):  
Suspension System ◽  
Design Improvement ◽  
Macpherson Strut Suspension ◽  
Macpherson Strut

Design optimization of minivan MacPherson-strut suspension system based on weighting combination method and neighborhood cultivation genetic algorithm

2018 ◽  
Vol 233 (3) ◽  
pp. 650-660 ◽  
Author(s):  
Zhuoyu Su ◽  
Fengxiang Xu ◽  
Lin Hua ◽  
Hao Chen ◽  
Kunying Wu ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Objective Function ◽  
Suspension System ◽  
Combination Method ◽  
Kinematic Characteristic ◽  
Design Parameters ◽  
Characteristic Analysis ◽  
Macpherson Strut Suspension ◽  
Wheel Alignment ◽  
Macpherson Strut

In this paper, the kinematic characteristic analysis and optimization design of a minivan MacPherson-strut suspension system are performed. Design requirements of a minivan suspension system are described first, and then the design process is presented. A typical MacPherson suspension model of the minivan is conducted. Through the established model, the simulation of parallel wheel travel of the suspension system of the minivan is carried out and analyzed. After initial analysis, wheel alignment parameters especially the toe angle and camber angles need to be optimized to meet the requirements of the desired design value. The characteristic curves of wheel alignment parameters are drawn and the corresponding non-ideal characteristics are found. The optimization objective is to reduce the variation of the unreasonable alignment parameters, and the design variables are given through the sensitivity analysis. The design parameters are reasonably grouped according to different kinematic characteristics, thus, a unified objective function is established by direct weighing combination method. Finally, the established objective function is optimized and designed with neighborhood cultivation genetic algorithm. By comparing the original and optimized results, the better wheel alignment parameters are obtained and the system performances of suspension are further improved.

A new adaptive sliding mode control for Macpherson strut suspension system with magneto-rheological damper

2016 ◽  
Vol 27 (20) ◽  
pp. 2795-2809 ◽  
Author(s):  
Saikat Dutta ◽  
Sang-Min Choi ◽  
Seung-Bok Choi
Keyword(s):  
Ride Comfort ◽  
Sliding Mode ◽  
Suspension System ◽  
Adaptive Sliding Mode Control ◽  
Sliding Mode Controller ◽  
Sliding Surface ◽  
Adaptive Sliding Mode ◽  
Adaptive Sliding Mode Controller ◽  
Magneto Rheological ◽  
Macpherson Strut

This work proposes a new adaptive sliding mode controller to enhance ride comfort and steering stability of automobile associated with a semi-active magneto-rheological damper. In this study, a Macpherson strut type suspension system which is widely used in light vehicles is considered. The dynamic model of the Macpherson strut with magneto-rheological damper is obtained and the governing equations are then formulated using kinematic properties of the suspension system following Lagrange’s formulation. In the formulation of the model, both the rotation of the wheel assembly and the lateral stiffness of the tire are considered to represent the nonlinear characteristic of Macpherson type suspension system. Subsequently, in order to effectively reduce unwanted vibrations, a new adaptive sliding mode controller is designed by adopting moving sliding surface instead of conventional fixed sliding surface. In order to demonstrate the effectiveness of the proposed controller, a cylindrical magneto-rheological damper is designed and manufactured on the basis of practical application conditions such as required damping force. Then, ride comfort, suspension travel, and road handling are evaluated and some benefits of the proposed controller such as enhanced ride comfort are evaluated.

scholarly journals Uncertainties with Respect to Active Vibration Control

2011 ◽  
Vol 104 ◽  
pp. 161-175
Author(s):  
Peter F. Pelz ◽  
Thomas Bedarff ◽  
Johannes Mathias
Keyword(s):  
Ambient Pressure ◽  
Active Vibration Control ◽  
Electrical Power ◽  
Active Suspension ◽  
Effective Area ◽  
Research Unit ◽  
Suspension System ◽  
Air Spring ◽  
Spring Force ◽  
Load Carrying

The content of this work is the presentation of the prototype of a new active suspension system with an active air spring. As being part of the Collaborative Research Unit SFB805 “Control of Uncertainties in Load-Carrying Structures in Mechanical Engineering”, founded by the Deutsche Forschungsgemeinschaft DFG, the presented active air suspension strut is the first result of the attempt to implement the following requirements to an active suspension system: Harshness and wear: Reduced coulomb friction, i.e. no dynamic seal. Plug and drive solution: Connected to the electrical power infrastructure of the vehicle. Vehicle and customer application by software and not by hardware adaption. These requirements were defined at the very beginning of the project to address uncertainties in the life cycle of the product and the market needs. The basic concept of the active air spring is the dynamic alteration of the so-called effective area. This effective area is the load carrying area A of a roller bellow and defined by A:=F/(p-pa). F denotes the resulting force of the strut, p the absolute gas pressure and pa the ambient pressure. The alteration of this effective area is realized by a mechanical power transmission, from a rotational movement to four radial translated piston segments. Due to the radial movement of the piston segments, the effective area A increases and so does finally the axial compression force F. The prototype presented in this paper serves as a demonstrator to proof the concept of the shiftable piston segments. This prototype is designed to gather information about the static and dynamic behavior of the roller bellows. Measurements show the feasibility of the concept and the interrelationship between the piston diameter and the resulting spring force.

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