onvertedintoacurrentviathedriverwithinthemechanicalunitThecurrentpassesthroughanelectromagnetwhichcreatesthecorrespondingmagneticfieldinitsvicinityThesphereisplacedalongtheverticalaxisoftheelectromagnetThemeasuredpositionisdeterminedfromanarrayofinfraredtransmittersanddetectors,positionedsuchthattheinfraredbeamisintersectedbythesphereUsingthefundamentalprincipleofdynamics,thebehaviouroftheferromagneticballisgivenbythefollowingelectromechanicalequationwheremisthemassofthelevitatedball,gdenotestheaccelerationduetogravity,xisthedistanceoftheballfromtheelectromagnet,iisthecurrentacrosstheelectromagnet,andf(x,i)isthemagneticcontrolforceACalculatingthemagneticcontrolforceonthemetallicsphereConsiderasolenoidwithanrradius,anlength,crossedbyanIcurrentThe'sphereislocatedontheaxisofthecoilasshowninFigTheeffectofthemagneticfievitationControlSystem-AnUndergraduateProject",IEEETransonE