7/24/2019 MDP Poster

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Design Specification

Abstract

The All Terrain Vehiicle or a.k.a ATV is a vehicle which issubjected to intense loading due to rough and bumpy terrainuse . Hence , for that a good suspension system is to beneeded . Thus , it was to be identified that the ATV needs toundergo frequent maintainance due to its use in rough terrainswhich also reflects on the user comfort , reduced life span andlack of performance and cost effectiveness . Hence , a newsuspension system is utilized by introducing the magneticspring instead of the normal shock absorbers . In addition tothat , it could absorb more shocks during rough terrain drivesand increased in life span , cost and performanceeffectiveness .

ObjectiveThis project aims at selecting, modifying, analyzing andfabricating a suspension system capable of handling roughterrains while maintaining the ride quality.Various technologies are compared with the proposedmagnetic suspension system that uses normal spring, damperand etc. Based on on-road measurements and results fromthe literature, several specifications for the design of amagnetic suspension system are derived. The measured on-road movement of the passive suspension system isreproduced by magnetic actuation on an ATV setup, provingthe dynamic capabilities of a magnetic suspension system.We completed this objective by doing extensive research onthe front and magnetic suspension arms geometry to helpreduce as much body roll as possible. Proper camber andcaster angles were provided to the front wheels. The shockswill be set to provide the proper dampening and springcoefficients to provide a smooth and well performing ride.Better alignment with braking for good active impactdistribution of force also absorption.

Working Principle An electromagnetic suspension simply replace thedampers with two opposing magnetic field with repulsiveforces strong enough to counter off the weight beingsprung on it . When a current passes through a wire, amagnetic field around that wire is generated. When thecurrent through the wire stops, so does the previouslygenerated magnetic field. The strength of the generatedmagnetic field is proportional to the size of the currentthrough the wire. When a wire is coiled, this generatedmagnetic field is concentrated through the center of thecoil. The strength of this field can be greatly increased byplacing a ferromagnetic material in the center of the coil.

A continuous supply of electric current is required to

maintain a magnetic field in an electromagnet, this field iseasily manipulated by changing the current in the wire.Therefore, electromagnets are much more practical thanpermanent magnets for levitation purposes.Electromagnetic suspension (EMS) is the magneticlevitation of an object achieved by constantly altering thestrength of a magnetic field produced by electromagnetsusing a feedback loop.

Acknowledgments Mr.Fairuz have devoted tremendous effort into overseeing thisproject. Thank you guiding us with the project and my fellowcolleagues for making this project design a success .

Magnetic Spring Integrated Suspension for All Terrain Vehicle (ATV):A Conceptual Design

Pavithrah Tamil Vanan (ME090490 ) , Karthick Muniandy ( ME091428 ), Avinesh Balan (ME094050) , Lee Zhee Le (ME091997 ) ,Kellvinthra Preshanth Selvaraj (ME091450) , Indran Kunusilin (ME093224 )

SPECIFICATI

ON DETAILS

TYPE OF

SUSPENSION

SYSTEM

Magnetic and spring

MATERIAL

SELECTION High strength aluminumSpring made of high strength stainless-steel

WISHBONE Double wishbone, single arm

SPECIAL

FEATURES Compact design with spring damper enclosed on the hydraulic chamberwhich saves space and no visible spring

COST Average

LIFESPAN 3-5 years

MAINTAINA

NCE Low

Figure 3 : Exploded View

Figure 1 : A conventionalhydraulic suspension

Figure 4 : 3D Drawing

Figure 2 : Magnetic shock Absorber