Dynamics And Control Analysis Of A Non Linear Active Suspension System Using Half Vehicle Model
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Dynamics and Control Analysis of a Non-linear Active Suspension System Using Half Vehicle Model
The main purpose of vehicle suspension system is to isolate the vehicle main body from any road geometrical irregularities in order to improve the passengers ride comfort and to maintain good handling characteristics subject to different road profile. This dissertation aim at establishing a mathematical model and a control strategy for a nonlinear hydraulically actuated active suspension system. A model of nonlinear, four Degree of Freedom (DOF) half vehicle active suspension system with hydraulic actuator dynamics and a similar nonlinear, four DOF half vehicle passive suspension system model was developed using Matlab/Simulink environment. A control system consisting of two controller loops was also developed, namely inner loop controller for force tracking control of the hydraulic actuator and outer loop controller to resist the effects of road induced disturbances. The outer loop controller employed a proportional integral and differential (PID) control strategy. On the other hand, a proportional integral and differential (PID) force feedback control scheme was employed in the inner loop controller to stabilize the hydraulic actuator in such a way that it is able to supply the actual force as close as possible with the optimum targeted force supplied by the PID controller. Two types of road (discrete and random) inputs were employed and a simulation study using Matlab/Simulink environment was performed to test the effectiveness and robustness of the control scheme. The performance of the active suspension system was assessed by comparing it response to that of passive suspension system. Results obtained shows that, the active suspension system developed a good dynamic response and a better ride comfort when compared to the conventional passive suspension system.
Proceedings of the 14th International Conference on Vibration Problems
Author: Evangelos J. Sapountzakis
language: en
Publisher: Springer Nature
Release Date: 2020-12-23
This book presents the select proceedings of the 14th International Conference on Vibration Problems (ICOVP 2019) held in Crete, Greece. The volume brings together contributions from researchers working on vibration related problems in a wide variety of engineering disciplines such as mechanical engineering, wind and earthquake engineering, nuclear engineering, aeronautics, robotics, and transport systems. The focus is on latest developments and cutting-edge methods in wave mechanics and vibrations, and includes theoretical, experimental, as well as applied studies. The range of topics and the up-to-date results covered in this volume make this interesting for students, researchers, and professionals alike.
CONAT 2024 International Congress of Automotive and Transport Engineering
These 3-volume proceedings includes selected and reviewed papers from CONAT 2024 – the 13th edition of the International Congress of Automotive and Transport Engineering, held in Brasov, Romania, in November 2024. Authors are experts from research, industry and universities coming from around the world. The papers are covering the latest developments in automotive vehicles and environment, advanced transport systems and road traffic, advanced powertrain systems, new materials, manufacturing technologies and logistics, accident research and analysis and innovative solutions for automotive vehicles. The congress is organized by SIAR (Society of Automotive Engineers from Romania) in cooperation with SAE International and Transilvania University of Brasov. This first volume presents the papers on Advanced Powertrain Systems, Advanced Engineering Methods as well as Vehicle Dynamics and Vehicle Systems.