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motors lab

VIEWS: 6 PAGES: 23

									                                           Engineering H191 - Drafting / CAD




                       DC Motors


                              Lab 3




Autumn Quarter   Gateway Engineering Education Coalition       Lab 3    P. 1
                                             Engineering H191 - Drafting / CAD



                            Overview

       • Magnetism / Electromagnetism
       • Stepper Motor

       • Right Hand Rules
       • Simple DC Motor
       • Brushes / Commutator

       • Pulse Width Modulation (PWM)
       • Servo Motor
       • AC Synchronous Motors

Autumn Quarter     Gateway Engineering Education Coalition       Lab 3    P. 2
                                               Engineering H191 - Drafting / CAD



                            Magnetism
                 Opposites Attract / Likes Repel




Autumn Quarter       Gateway Engineering Education Coalition       Lab 3    P. 3
                                             Engineering H191 - Drafting / CAD

                     Magnetic Fields
           Direction of Field: North  South




Autumn Quarter     Gateway Engineering Education Coalition       Lab 3    P. 4
                                                Engineering H191 - Drafting / CAD



                     Right Hand Rule # 1
                 Electric Currents  Magnetism!




Autumn Quarter        Gateway Engineering Education Coalition       Lab 3    P. 5
                                                Engineering H191 - Drafting / CAD



                     Right Hand Rule # 1
                 Electric Currents  Magnetism!




Autumn Quarter        Gateway Engineering Education Coalition       Lab 3    P. 6
                                           Engineering H191 - Drafting / CAD



                 Electromagnetism




Autumn Quarter   Gateway Engineering Education Coalition       Lab 3    P. 7
                                           Engineering H191 - Drafting / CAD



                    Electromagnet




                                                            North/South
                                                              Pole?




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                                           Engineering H191 - Drafting / CAD


                    Stepper Motor




Autumn Quarter   Gateway Engineering Education Coalition       Lab 3    P. 9
                                           Engineering H191 - Drafting / CAD


                    Stepper Motor




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 10
                                           Engineering H191 - Drafting / CAD



                  Simple DC Motor




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 11
                                           Engineering H191 - Drafting / CAD


                 Right Hand Rule # 2
        Electric Currents & Magnetism  Force




                                 Force




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 12
                                            Engineering H191 - Drafting / CAD



                 Force in a Conductor




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                                            Engineering H191 - Drafting / CAD



                 Force in a Conductor




Autumn Quarter    Gateway Engineering Education Coalition      Lab 3    P. 14
                                                Engineering H191 - Drafting / CAD



                 Diagram of a Simple DC Motor




Autumn Quarter        Gateway Engineering Education Coalition      Lab 3    P. 15
                                           Engineering H191 - Drafting / CAD



                     Electric Motor




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                                           Engineering H191 - Drafting / CAD



                      Commutator




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                                           Engineering H191 - Drafting / CAD


                    Class Example




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 18
                                                             Engineering H191 - Drafting / CAD


                 Pulse Width Modulation (PWM)

                   Time On              Time On                 Time On




                    Total Cycle Time      Total Cycle Time       Total Cycle Time




                              Duty Cycle =        Time On
                                             Total Cycle Time




Autumn Quarter               Gateway Engineering Education Coalition                Lab 3   P. 19
                                           Engineering H191 - Drafting / CAD



                            Motors

•   DC: Brushed, Brushless, Permanent, etc
•   AC: Induction, Synchronous, etc
•   Stepper
•   Servo
•   Universal




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 20
                                           Engineering H191 - Drafting / CAD



                      In This Lab…

• Study the stepper motor and find a switching
  sequence which produces rotation
• Using the oscilloscope, analyze the signal used
  by the Handy Board to control the servo motor at
  your table
• Build your own DC motor using the kit provided
• Analyze the small DC motor at your table




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 21
                                             Engineering H191 - Drafting / CAD



                 Team Working Agreements

•   Download from Website
•   Fill out ELECTRONICALLY with your team TODAY
•   Print and Turn in a SINGED copy BEFORE leaving
•   Distribute a copy to each team member




Autumn Quarter     Gateway Engineering Education Coalition      Lab 3    P. 22
                                           Engineering H191 - Drafting / CAD




                      Questions ?




Autumn Quarter   Gateway Engineering Education Coalition      Lab 3    P. 23

								
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