Stepper motor

2,080 views
1,809 views

Published on

i think it will help you friends

Published in: Education, Business
1 Comment
2 Likes
Statistics
Notes
  • i need a presentation of - controlling a step-up motor using wireless device and its applications. please upload this presentation emmediately.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
2,080
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
130
Comments
1
Likes
2
Embeds 0
No embeds

No notes for slide

Stepper motor

  1. 1. REMOTE CONTROLLING OFSTEPPER MOTOR DIRECTION AND SPEED USING MOBILE. By: E. Arun Kumar N. Archana V. Swetha
  2. 2. Stepper Motor finds it applications in various areas.• COMPUTER APPLICATIONS• INDUSTRIAL APPLICATIONS• WIND TURBINES
  3. 3. Block Diagram : Power Supply L.C.DD.T.M.FDecoder Stepper Micro Motor 1 Controller (AT89C52) Motor DriverMobilePhone Stepper Motor 2
  4. 4. Components : HARDWARE IC 7805 AT89C52 (UC) HT9170b (DTMF DECODER) ULN2803a (MOTOR DRIVER) Stepper Motor L.C.D ( HT44870) SOFTWARE Keil
  5. 5. Micro Controller : 8K Bytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-level Program Memory Lock 256 x 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Programmable Serial Channel Low-power Idle and Power-down Modes
  6. 6. Stepper Motor Types :• Unipolar Stepper Motor: Unipolar stepper motors are characterised by their center-tapped windings.
  7. 7.  Bipolar Stepper Motor: Bipolar stepper motors are designed with separate coils.
  8. 8. • Hybrid Stepper Motor : Variable reluctance stepper motor (also called hybrid motors) are characterised by one common lead.
  9. 9. Motor Driver :• Output current up to500mA• Output voltage up to 50V• Internal suppressiondiodes• Eight Darlington witheight emitters• Outputs can beparallelized
  10. 10. DTMF: Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signallingover analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. A DTMF signal is the algebraic sum of two different audio frequencies, and can be expressed as follows: f(t) = A0sin(2*П*fa*t) + B0sin(2*П*fb*t) + ………..
  11. 11. • The frequencies associated with various keys on the keypad are shown in figure (A).
  12. 12. HT9170b :•Operating voltage:2.5V~5.5V•Minimal externalcomponents•No external filter is required•Low standby current (onpower down mode)•Excellent performance
  13. 13. L.C.D : Alpha Numeric L.C.D with 16 pins. 7-14 pins are data pins. L .C.D used is 2x16.
  14. 14. Flow Chart : start Display Characters on L.C.D If key pressed Display Corresponding Key on L.C.D rotate motor depending on key pressed Stop
  15. 15. Conclusion : It finds its application in X-Y Plotter used in industrial applications.

×