lecture_10

lecture_10 - ME 421 Mechanical Dynamics and Control Fall...

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ME 421 Mechanical Dynamics and Control Fall 2006, Lecture 10 Today’s topics: 1.Introduction to electric motors (Dr. Faidley) 2.Conversion between transfer function, differential equations, and state-space model; 3.Dynamics modeling using transfer function and state-space concepts.
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Introduction to Electric Motors Lab 3,4,5,6 i T D Motor Inertia J m Gears: R 1 R 2 Voltage Input From Amplifier Torque From Load Electrical System Mechanical System Friction: B m armature gear box permanent magnet
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How they work Mechanical/Electrical Link: – Current (i) º magnetic field (H) º torque (T) – Motion in magnetic field ( ) º Back EMF (V emf ) i K T m m = m e emf K V θ & = Electromagnets on rotating armature N/S pole created attracted to opposing pole of permanent magnet Armature turns Current direction switched - magnetic pole switched - motion continues 3 poles: more stable, more torque 3 Pole Configuration www.infoytica.com 2 Pole Configuration www.wikipedia.com
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Electric System Where from? - wires in electromagnets
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This document was uploaded on 03/23/2010.

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lecture_10 - ME 421 Mechanical Dynamics and Control Fall...

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