Development of external orifice semi active suspension system (EOSASS) for armored vehicle

Suspension system considered as the most important component that defines the handling and ride performance of an armored vehicle. A good suspension system provides a reliable damping force in order to maintain a good contact between the vehicle‘s tires and road surface. Commonly, the suspension sys...

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Main Author:	Mohd Amin, Mohamad Hafiz Ikhwan
Format:	Thesis
Language:	English English
Published:	2016
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://ir.upnm.edu.my/id/eprint/49/1/DEVELOPMENT%20OF%20EXTERNAL%20%2825%29.pdf http://ir.upnm.edu.my/id/eprint/49/2/DEVELOPMENT%20OF%20EXTERNAL%20%28Full%29.pdf
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id	my-upnm-ir.49
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spelling	my-upnm-ir.492023-01-16T02:40:58Z Development of external orifice semi active suspension system (EOSASS) for armored vehicle 2016-10-28 Mohd Amin, Mohamad Hafiz Ikhwan TJ Mechanical engineering and machinery Suspension system considered as the most important component that defines the handling and ride performance of an armored vehicle. A good suspension system provides a reliable damping force in order to maintain a good contact between the vehicle‘s tires and road surface. Commonly, the suspension system installed in current armored vehicle is passive type suspension system where it produces a constant damping value. Therefore, the armored vehicle shows a poor performance in term of handling and ride performance during off-road condition due to the suspension system could not varies it damping values with extreme road conditions. In order to overcome this problem, a new suspension system design known as External Orifice Semi Active Suspension System (EOSASS) is proposed. In this design, the existing passive damper was modified by combining with an additional hydraulic unit. The hydraulic unit is designed to control the orifice area of the suspension system during extension and compression stages using DC motor. This enables the damping value to be controlled and varied depending on the road conditions and handling maneuver. The experimental characterizations on force-velocity and forcedisplacement behaviors of EOSASS prototype were conducted using Instron Testing system. Then, the behavior of EOSASS is modeled by Adaptive Neuro-Fuzzy Inference System (ANFIS) interpolation technique. The model is then validated with the behavior of EOSASS obtained from the experimental data. The performance of the ANFIS interpolation model then evaluated through force tracking control simulation to investigate the performance of the developed model. Next, a seven degree of freedom (DOF) vehicle ride model developed using MATLAB/Simulink as a plant for inner and outer loop controllers to evaluate the vehicle’s dynamic response by applying the proposed control strategies. The inner loop consists of ANFIS interpolation model of EOSASS that actuated by DC motor. Hybrid control comprising Skyhook and PID controller utilized for outer loop control strategies. In the meantime, the seven (7) DOF ride model with control strategies then optimized by Particle Swarm Optimization (PSO) technique in order to provide an optimum parameter to the proposed control strategies. The vehicle dynamic response such as body, pitch and roll acceleration responses that optimized by PSO exhibits the most outstanding performance compared to nonoptimized hybrid control strategies, PID control strategies and passive system. 2016-10 Thesis http://ir.upnm.edu.my/id/eprint/49/ http://ir.upnm.edu.my/id/eprint/49/1/DEVELOPMENT%20OF%20EXTERNAL%20%2825%29.pdf text en public http://ir.upnm.edu.my/id/eprint/49/2/DEVELOPMENT%20OF%20EXTERNAL%20%28Full%29.pdf text en validuser mphil masters Universiti Pertahanan Nasional Malaysia Faculty of Engineering
institution	Universiti Pertahanan Nasional Malaysia
collection	UPNM Institutional Repository
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Mohd Amin, Mohamad Hafiz Ikhwan Development of external orifice semi active suspension system (EOSASS) for armored vehicle
description	Suspension system considered as the most important component that defines the handling and ride performance of an armored vehicle. A good suspension system provides a reliable damping force in order to maintain a good contact between the vehicle‘s tires and road surface. Commonly, the suspension system installed in current armored vehicle is passive type suspension system where it produces a constant damping value. Therefore, the armored vehicle shows a poor performance in term of handling and ride performance during off-road condition due to the suspension system could not varies it damping values with extreme road conditions. In order to overcome this problem, a new suspension system design known as External Orifice Semi Active Suspension System (EOSASS) is proposed. In this design, the existing passive damper was modified by combining with an additional hydraulic unit. The hydraulic unit is designed to control the orifice area of the suspension system during extension and compression stages using DC motor. This enables the damping value to be controlled and varied depending on the road conditions and handling maneuver. The experimental characterizations on force-velocity and forcedisplacement behaviors of EOSASS prototype were conducted using Instron Testing system. Then, the behavior of EOSASS is modeled by Adaptive Neuro-Fuzzy Inference System (ANFIS) interpolation technique. The model is then validated with the behavior of EOSASS obtained from the experimental data. The performance of the ANFIS interpolation model then evaluated through force tracking control simulation to investigate the performance of the developed model. Next, a seven degree of freedom (DOF) vehicle ride model developed using MATLAB/Simulink as a plant for inner and outer loop controllers to evaluate the vehicle’s dynamic response by applying the proposed control strategies. The inner loop consists of ANFIS interpolation model of EOSASS that actuated by DC motor. Hybrid control comprising Skyhook and PID controller utilized for outer loop control strategies. In the meantime, the seven (7) DOF ride model with control strategies then optimized by Particle Swarm Optimization (PSO) technique in order to provide an optimum parameter to the proposed control strategies. The vehicle dynamic response such as body, pitch and roll acceleration responses that optimized by PSO exhibits the most outstanding performance compared to nonoptimized hybrid control strategies, PID control strategies and passive system.
format	Thesis
qualification_name	Master of Philosophy (MPhil)
qualification_level	Master's degree
author	Mohd Amin, Mohamad Hafiz Ikhwan
author_facet	Mohd Amin, Mohamad Hafiz Ikhwan
author_sort	Mohd Amin, Mohamad Hafiz Ikhwan
title	Development of external orifice semi active suspension system (EOSASS) for armored vehicle
title_short	Development of external orifice semi active suspension system (EOSASS) for armored vehicle
title_full	Development of external orifice semi active suspension system (EOSASS) for armored vehicle
title_fullStr	Development of external orifice semi active suspension system (EOSASS) for armored vehicle
title_full_unstemmed	Development of external orifice semi active suspension system (EOSASS) for armored vehicle
title_sort	development of external orifice semi active suspension system (eosass) for armored vehicle
granting_institution	Universiti Pertahanan Nasional Malaysia
granting_department	Faculty of Engineering
publishDate	2016
url	http://ir.upnm.edu.my/id/eprint/49/1/DEVELOPMENT%20OF%20EXTERNAL%20%2825%29.pdf http://ir.upnm.edu.my/id/eprint/49/2/DEVELOPMENT%20OF%20EXTERNAL%20%28Full%29.pdf
_version_	1813223585625407488

Development of external orifice semi active suspension system (EOSASS) for armored vehicle

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