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A Technology Approach to Magnetic Levitation

A Technology Approach to Magnetic Levitation. Steven Barker and Ron Matusiak Buffalo State College. Presentation Outline. Introduction to Buffalo & EET Program at BSC Why Maglev AGAIN? Maglev Summary in Pictures Critical Components Maglev Tuning - ET Approach

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A Technology Approach to Magnetic Levitation

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  1. A Technology Approach to Magnetic Levitation Steven Barker and Ron MatusiakBuffalo State College

  2. Presentation Outline • Introduction to Buffalo & EET Program at BSC • Why Maglev AGAIN? • Maglev Summary in Pictures • Critical Components • Maglev Tuning - ET Approach • Control Systems II Course -Centered around the Maglev project • Other Diagrams of Possible Interest

  3. Introduction to Buffalo, Local Industry, Education, Engineering Technology • Buffalo Population: city ~0.3M, region ~1M • Industry: automotive, chemical, food, aerospace, computer support, numerious small manufacturing • Education: 4 CCs, 15 colleges, 4 universities, 2 commercial colleges • Buffalo State College: Engineering Technology, Diversity, Control Systems • Outstanding Lab Technician

  4. Why Maglev AGAIN? • Demonstration for control system courses • Desire to share inexpensive design with others • Project-centered Controls II course for EET • Demonstration for college open house • Demonstration for high school recruitment

  5. Maglev Summary In Pictures • Hardware-Overview Picture • Close-Up Picture (Ball, IR LED & Detector) • Control-Circuit Picture • Control-Circuit Diagram • Component-List Table

  6. Portable Maglev System

  7. Close-Up View

  8. Control-Circuit Picture

  9. Control-Circuit Diagram

  10. Component-List Table

  11. Critical Components • Electromagnet • Derivative gain • Short leads • 10k Hz sensor signal isolation • Diode across the electromagnet

  12. Maglev Tuning - ET Approach • Sanity Check: voltage_D & air gap & current_I • Derivative gain (K_D): turn off • Proportional gain (K_P): Increase Until ... • K_D: Increase slowly (May also have to simultaneously trim K_P.) • Air gap: about 1/2 cm • Electromagnet current: about 300 ma. Did not overheat. • Ambient light still has some effect.

  13. Control Systems II Centered Around The Maglev Project • Lectures on classical frequency responses - Bode Plots (3 weeks) • Students build, test, and tune the maglev system (4 weeks) • Students build MATLAB Simulink model of the maglev system (4 weeks) • Lectures on frequency response stability (3 weeks) • Review and traditional final exam on frequency responses (1 week).

  14. Other Diagrams Of Possible Interest • A Student's Simulink Model • Measuring Magnetic Force vs I and Z • Frequency Response of the Derivative Block • Measuring the Air Gap • Digital Control • Various Electromagnets • Possible Laboratory Experiments

  15. Simulink Model

  16. Measuring Magnetic Forcevs Current and Air Gap

  17. Measuring the Air Gap

  18. Frequency Response of Derivative Block

  19. Digital Control of Maglev System

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