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By: Craig Chan & Mike Abidoye Advisor: Steven Gutschlag 2 December 2004

Active Suspension System Test Platform Bradley University Department of Electrical & Computer Engineering. By: Craig Chan & Mike Abidoye Advisor: Steven Gutschlag 2 December 2004. Outline. Project summary Previous work Functional description Block diagrams Inputs and Outputs

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By: Craig Chan & Mike Abidoye Advisor: Steven Gutschlag 2 December 2004

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  1. Active Suspension System Test PlatformBradley UniversityDepartment of Electrical & Computer Engineering By: Craig Chan & Mike Abidoye Advisor: Steven Gutschlag 2 December 2004

  2. Outline • Project summary • Previous work • Functional description • Block diagrams • Inputs and Outputs • Subsystems • Software flowchart • Hardware configuration • Parts list • Work Schedule • Questions?

  3. Project Summary • Drive a platform load with a linear actuator or a DC motor • Microcontroller based feedback control system • User selects frequency, amplitude, and waveform type • Optional analog input

  4. Previous Work • Linear Actuator • Power electronics calculations • Plant model • System responds with different waveform types • Bidirectional movement of platform loads

  5. Functional Description • Responds to a platform load via feedback system • The mode of operation will be determined by the user via a keypad on the micro-controller. • Sinusoidal • Step • Triangular • Flexibility in selecting desired frequency and amplitude of the platform’s motion

  6. Input Voltage Signal Representing the Desired Platform Motion + - Actuator (Plant) Platform Motion Controller (EMAC Micropac 535) Control Block Diagram

  7. Inputs & Outputs

  8. Analog Position Input (Optional) Keypad Input (Desired Platform Motion) A/D Converter Display (Desired user input) EMAC Micropac 535 Micro-Controller Interface Power Electronics Output (Platform Motion) Test Platform FEEDBACK System Block Diagram

  9. Software Subsystem

  10. Hardware Subsystem

  11. Test Platform Subsystem

  12. START Initialize keypad, LCD module, timers to be utilized, and other interfaces Branch to main program, accept all user inputs from the keypad Process all user inputs to obtain output for the platform, display user inputs and mode of operation on LCD Fetch position feedback signal from the platform to update output control signals sent to the platform. Loop back to main program. END Software Flow Chart

  13. Hardware Configuration

  14. High & Low Side DriverConfigurationIR2213

  15. θJA = (TJ–TA)/Pd 2.4Watts Transistor Power Calculation without heat sink

  16. Parts List • Micro Pac 535 • High and Low Side Driver (IR2213) • Phototransistor (4N25) • Actuator • DC Motor • N-channel Power Mosfets (IR640)

  17. Work Schedule Fall Semester • ASSTP Project Research • Power Electronics Design Spring Semester • Week 1-2 Software Design • Week 3-4 Software Coding and Platform Construction • Week 5-7 Software Debugging and Testing • Week 8-10 System Integration of Hardware and Software Subsystems • Week 11-13 Research on project expansion and senior presentation preparation

  18. QUESTIONS Back to home

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