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RequirementSummary032205-1

RequirementSummary032205-1 - i Requirement Summary DCMotors...

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Requirement Summary DCMotors Contents M.D. Fox 3/22/05 Design Project Two: DC Motor Drives ................................................................. 1 ASSIGNMENT ................................................................................................ 1 1. MOTOR CHARACTERIZATION. ........................................................... 1 2. FEEDBACK SPEED CONTROL ............................................................ 2 3. ENGINEERING REPORT. ..................................................................... 2 i ©1988-200 5 FOX Research . All rights reserved.
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Design Project Two: DC Motor Drives M. D. Fox Update : 3 ê 22 ê 05 ASSIGNMENT à 1. MOTOR CHARACTERIZATION. 1. Obtain a Minertia DC motor in the laboratory. Be sure to record identifying numbers for the motor so you will be able to use the same one in subsequent laboratory sessions. For the single, unloaded motor, vary the armature voltage and measure the motor speed and armature current for each value of the armature voltage. Measure the armature resistance with an ohmmeter. a. Plot the speed versus the armature voltage. b. Determine the motor constant (in rpm/V) by fitting to a straight line. c. Use multivariate regression to deduce the armature resistance. 2. Plot the input power versus the speed. Plot the mechanical power loss versus the speed for the single motor. Repeat these procedures for a second Minertia DC motor. Are there significant differences in their
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