# Lab4template - Lab 4 INTRODUCTION TO THE DC MOTOR 1 of 3 Total/90 Report By Lab Partner Lab TA Section Part I Calibration of Tachometer/5 Computing

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Lab 4 I NTRODUCTION TO THE DC M OTOR 1 of 3 Report By: Lab Partner: Lab TA: Section: Part I. Calibration of Tachometer: ___/5 Computing the Tachometer Gain ___/3 Briefly explain the procedure and the importance of computing the gain for the Tachometer. Why is it important to know K tach ? Experimental Parameters for the Tachometer. ___/2 V i (V) Δt (s) V tach (V) ω (rad/s) K tach (Vs/rad) 5 10 15 Average Part II. Armature Resistance and Back-EMF: ___/10 Measuring the Armature Resistance and Back-EMF ___/4 Explain the procedure for obtaining the Armature Resistance and the torque gain (K v = K τ ,). Why can we ignore L a ? Experimental Values ___/2 V i (V) I ss-a (A) V tach (V) ω ss (rad/s) 5 6 7 8 9 10 11 12 -5 -6 -7 -8 -9 -10 -11 -12 Total: /90

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Lab 4 I NTRODUCTION TO THE DC M OTOR 2 of 3 Experimental Parameters ___/4 Parameter Value R A (Ω) K V (Vs/rad) Part III. Constant and Viscous Friction Coefficients: ___/10 Measuring the constant and viscous coefficients ___/6 Explain the procedure for obtaining the friction coefficients. Include equations.
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## This note was uploaded on 03/28/2011 for the course ECE 486 taught by Professor H during the Spring '09 term at University of Illinois at Urbana–Champaign.

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Lab4template - Lab 4 INTRODUCTION TO THE DC MOTOR 1 of 3 Total/90 Report By Lab Partner Lab TA Section Part I Calibration of Tachometer/5 Computing

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