STEPPER MOTOR CONTROL USING HC11 MICROCONTROLLER

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STEPPER MOTOR CONTROL USING HC11 MICROCONTROLLER

• Project Presentation for ELET 5300
• Dr. C.Wu Instructor
• Presented by
• Sriteja Tarigopula
• 04/23/03

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STEPPER MOTOR CONTROL USING HC11 MICROCONTROLLER

• Project Presentation for ELET 5300
• Dr. C.Wu Instructor
• Presented by
• Sriteja Tarigopula
• 04/23/03

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Stepper Motor Control using HC11
Microcontroller Problem Statement

• To calculate the speed of a simple motor and
  displaying the speed using a seven-segment
  display using a HC11Microcontroller from Motorola

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Stepper Motor Control using HC11
MicrocontrollerHardware Requirements

• Stepper Motor (1)
• HC11 EVB (1)
• Seven Segment Display (1)
• 25K O potentiometer (1)
• ULN-2075B Motor Driver IC (1)

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Stepper Motor Control using HC11
MicrocontrollerCIRCUIT DIAGRAM
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Stepper Motor Control using HC11
MicrocontrollerLED Connections
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Stepper Motor Control using HC11
MicrocontrollerSubroutines

• INIT Subroutine.
• TURN Subroutine.

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Stepper Motor Control using HC11
MicrocontrollerSubroutines (Contd)

• READAD Subroutine
• ADTCL Register

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Stepper Motor Control using HC11
MicrocontrollerSubroutines (Contd)

• Channel Selection When Bit 41

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Stepper Motor Control using HC11
MicrocontrollerSubroutines (Contd)

• READAD Subroutine
• OPTION Register

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Stepper Motor Control using HC11
MicrocontrollerSubroutines (Contd)

• COMPSD Subroutine.
• DISPLAY Subroutine.

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Stepper Motor Control using HC11
MicrocontrollerModified Circuit Diagram
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Stepper Motor Control using HC11
MicrocontrollerCoil Winding Diagram for J835L
PM 24P
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Stepper Motor Control using HC11
MicrocontrollerNormal 4 Step sequence
Cloclwise Step Winding A Winding B Winding C Winding D Counter Clockwise
1 1 0 0 1
2 1 1 0 0
3 0 1 1 0
4 0 0 1 1
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Stepper Motor Control using HC11
MicrocontrollerSubroutines

• INIT Subroutine.
• TURN Subroutine.
• READAD Subroutine.
• COMPSD Subroutine.
• DISPLAY Subroutine.

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Stepper Motor Control using HC11
MicrocontrollerApplications

• Robotic Controllers.
• Turning Machine Tools.
• Shaft Positioning Control Systems.

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Stepper Motor Control using HC11
MicrocontrollerReferences

• Data Acquisition and Process Control with M68HC11
  microcontroller by Driscoll, Coughlin,Villanucci.
• Design of Embedded Systems using 68HC12/11
  microcontrollers by Richard E.Haskell.
• www.motorola.com

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Thank you