Steper Motor Control Through Wireless

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Steper Motor Control Through Wireless

  1. 1. STEPPER MOTOR CONTROL THROUGH WIRELESS Submitted by (RAVI KUMAR,ASHWANI GARG,VINOD KUMAR,MANOJ GOSWAMI.VIBHOOTI KUMAR SINHA) FOURTH YEAR ELECTRONICS & TELECOMMUNICATION Guided by Mr. Aman dua , Mrs. Shiva Jaiswal LECTURER (ELECTRONICS & TELECOMMUNICATION ) COLLEGE OF ENGINEERING ROORKEE ROORKEE – 247 667
  2. 2. ACKNOWLEDGEMENTS <ul><li>We express our deepest thanks to </li></ul><ul><li>Mr. AMAN DUA </li></ul><ul><li>Project Guide Lecturer </li></ul><ul><li>Ms.DIVYA ARORA </li></ul><ul><li>Project Coordinator , Lecturer </li></ul><ul><li>Mr. B D PATEL </li></ul><ul><li>Head of Electronics & Telecom Dept </li></ul><ul><li>College of Engineering Roorkee ,Roorkee </li></ul>
  3. 3. OUR PROJECT <ul><li>OBJECTIVE-:To control stepper motor by computer interface as well as by wireless </li></ul><ul><li>INTRODUCTION-:Project is based on 1)microcontroller programming </li></ul><ul><li>2)driver circuit interface with micro-controller </li></ul><ul><li>3)interfacing of keyboard </li></ul><ul><li>4) interfacing of wireless control </li></ul><ul><li>5)LCD deployment to watch change in speed </li></ul>
  4. 4. stepper motor performance characteristic <ul><li>Rotation in both directions </li></ul><ul><li>Precision angular incremental changes </li></ul><ul><li>Repetition of accurate motion </li></ul><ul><li>A holding torque at zero speed </li></ul><ul><li>Capability for digital control. </li></ul>
  5. 5. BLOCK DIAGRAM OF PROJECT USER INTERFACE INDEXER DRIVER MOTOR HIGH LEVEL COMMANDS STEP PULSES MOTOR CURRENT
  6. 6. Specification of the project model <ul><li>Indexer is a micro-controller(AT89C51 ) </li></ul><ul><li>Driver (ULN2803A ) converts the indexer command signals into the power necessary to energize the motor windings </li></ul><ul><li>Step Motor(UNIPOLAR) is an electromagnetic device that converts digital pulses into mechanical shaft rotation </li></ul><ul><li>Computer Interfacing (serial port) </li></ul><ul><li>LCD </li></ul>
  7. 7. STEPPER MOTOR <ul><li>Brushless </li></ul><ul><li>Synchronous electric motor </li></ul><ul><li>divide a full rotation into a large number of steps </li></ul><ul><li>stepper motor uses an open loop with no feedback, position being determined by a software counter in the controlling computer. </li></ul><ul><li>Rotation in both directions </li></ul>
  8. 8. INTERNAL STRUCTURE OF STEPPER MOTOR F=i (dl x B) ROTOR (permanent magnet) TEETH (to define precise rotation STATOR (carry coil for current Flow)
  9. 9. How stepper motor works? <ul><li>Stepper motor converts electrical pulses into specific rotational movements </li></ul><ul><li>Hence ,Torque is generated by alternately magnetizing the stator teeth electrically, and permanent magnet rotor teeth try to align up with stator teeth </li></ul>
  10. 10. One Phase Steps
  11. 12. One Phase On Mode (Full Step mode)
  12. 13. One Phase On Steps Sequence
  13. 14. MICROCONTROLLER <ul><li>Special purpose computers </li></ul><ul><li>Dedicated to one task (i.e. no multi tasking) </li></ul><ul><li>Low-power device. </li></ul><ul><li>It has a dedicated input device. </li></ul><ul><li>In our project we are using AT89C51 MICROCONTROLLER </li></ul>
  14. 15. AT89C51 MICROCONTROLLER <ul><li>CMOS 8-bit. </li></ul><ul><li>4K bytes of Flash programmable and erasable read only memory (PEROM). </li></ul><ul><li>“ AT” represents Atmel’s high-density nonvolatile memory technology. </li></ul><ul><li>Power consumption of 50 mW </li></ul><ul><li>Compatible with MCS-51 instruction set </li></ul><ul><li>Fully Static Operation: 0 Hz to 24 MHz </li></ul><ul><li>Continued.. </li></ul>
  15. 16. Continued.. <ul><li>128 x 8-Bit Internal RAM </li></ul><ul><li>Two 16-Bit Timer/Counters </li></ul><ul><li>Six Interrupt Sources </li></ul><ul><li>32 Programmable I/O Lines </li></ul>
  16. 17. ULN 2803 DRIVER <ul><li>suited for interfacing between low-level logic circuitry and multiple peripheral power loads </li></ul>USER INTERFACE INDEXER DRIVER MOTOR HIGH LEVEL COMMANDS STEP PULSES MOTOR CURRENT
  17. 18. Internal architecture of ULN2803 <ul><li>Seven open collector darlington pairs with common emitters . </li></ul><ul><li>500mA to each of the seven drivers , Output voltage to 95 V . </li></ul><ul><li>power loads totaling over 230 W we can connect to it. </li></ul><ul><li>Each channel rated at 500mAand can withstand peak currents of 600mA(i.e. it is highly reliable) </li></ul><ul><li>TTL, DTL, PMOS or CMOS-Compatible Inputs </li></ul>
  18. 19. REGULATOR <ul><li>LM78XX </li></ul><ul><li>available in the TO-220/D-PAK package </li></ul><ul><li>fixed output voltages </li></ul><ul><li>thermal shut down and safe operating area protection </li></ul><ul><li>Output Current up to 1A </li></ul><ul><li>Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V </li></ul><ul><li>Short Circuit Protection </li></ul>
  19. 20. LIQUID CRYSTAL DISPLAY <ul><li>Hitachi's HD44780 </li></ul><ul><li>It has 1 controller with14 Pins </li></ul><ul><li>configurations of 8x1 characters, 16x2, and 20x4 . The largest such configuration is 40x4 characters.we are using 8x1 LCD </li></ul>
  20. 21. <ul><li>IC CD40106 </li></ul><ul><li>HEX Schmitt Trigger (NOT Gate) </li></ul><ul><li>Features </li></ul><ul><li>Wide supply voltage range:3V to 15V </li></ul><ul><li>High noise immunity: 0.7VDD </li></ul><ul><li>Low power TTL compatibility </li></ul><ul><li>Hysteresis 0.4VDD & 0.2VDD guaranteed </li></ul><ul><li>Hysteresis 0.4VDD & 0.2VDD guaranteed </li></ul>9 7 - 8 + 14
  21. 22. COMPUTER INTERFACING <ul><li>We can connect our project to serial port of computer and can control the speed of it using keyboard. </li></ul><ul><li>Serial ports are typically identified on IBM compatible computers as COM ports </li></ul><ul><li>It folllows synchronous data link standard(RS 232) </li></ul><ul><li>serial communication is the process of sending data one bit at one time </li></ul>
  22. 23. SERIAL Vs PARALLEL COMM.
  23. 24. TRANSCEIVER <ul><li>transceiver is a device that has both a transmitter and a receiver </li></ul><ul><li>An electronic switch allows the transmitter and receiver to be connected to the same antenna. </li></ul><ul><li>it is impossible to receive signals while transmitting (called half duplex comm. ) </li></ul><ul><li>Some transceivers are designed to allow reception of signals during transmission periods (called full duplex comm.) contd.. </li></ul>
  24. 25. contd.. <ul><li>A logic 0 is represented voltage +3V to +15VDC and a logic 1 is represented by -3VDC to -15VDC. </li></ul><ul><li>250kbps Operation </li></ul><ul><li>Low Power: 60mW </li></ul><ul><li>RS232 Compatible </li></ul><ul><li>High Impedance </li></ul><ul><li>State When Off or </li></ul><ul><li>Powered Down </li></ul>
  25. 26. <ul><li>This PROJECT can be used perfectly in many areas. </li></ul><ul><li>This device is easy to implement in hardware and software means. </li></ul><ul><li>This circuit is cost effective, consume less power and take minimum space. </li></ul>CONCLUSION
  26. 27. Block diagram of transmitter section <ul><li>Antenna </li></ul><ul><li>27MHz </li></ul>AMPLIFIER MODULATOR ENCODER IC INPUT KEY CARRIER WAVE GENERATOR
  27. 28. Block diagram of receiver section CLOCK GENERATOR CONTROL LOGIC DECODER RECEIVER STEPPER MOTOR DRIVER LCD 12 V SUPPLY
  28. 29. PROJECT COMPONENTS MICRO CONTROLLER AT89C51 TRANCEIVER MAX 232 N ULN2803A DRIVER REGULATOR LM7805 STEPPER MOTOR POTENTIOMETER TRANSFORMER CLOCK GENERATOR CD40106 LCD HD44780
  29. 30. FUTURE OF OUR PROJECT <ul><li>Places where we need precise position to be displaced E.g.: </li></ul><ul><li>1)Machine tools </li></ul><ul><li>2)Disk drives (Hard disk, Floppy Drive) </li></ul><ul><li>3)Printers </li></ul><ul><li>4)Robotics </li></ul>
  30. 31. THE END <ul><ul><li>THANKS YOU ALL </li></ul></ul>

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