lag compensator

Download Lag Compensator

Post on 24-Apr-2015

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Design a lag compensator to control the stability and settling time of the dc motor model FN38

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  • 1. DC MOTOR COMPENSATOR
  • 2. ZAIN AHMED (F-3634) ISLAM NAQI (F-3616) FAISAL ASHRAF (F-3629) AFAQ SATTI (F-3335)
  • 3. OBJECTIVE To increase the Stability of DC motor and to decrease the settling time, we are using lag compensator.
  • 4. FN38 Here we use the FN38 Series with encoded. Red is -VE. Blue is +VE. Grey is Ground. 3 Encoded Outputs and 1 Feedback Output.
  • 5. VALUES FOR THE PHYSICAL PARAMETERS:
  • 6. ELECTRO MECHANICAL SYSTEM
  • 7. TRANSFER FUNCTION: 2 ))(( )()()( )()()( KRLsbJs K V sKsVsIRLs sKIsbJss
  • 8. MATLAB CODE: syms s t=0.18/((2+8.7*s)*(0.0039*s+0.26)+(0.18^2)) [N,D]=numden(t) n=sym2poly(N) d=sym2poly(D) step(n,d),figure(2) rlocus(n,d),figure(3) margin(n,d)
  • 9. SETTLING TIME: 17 SEC, FINAL VALUE: 10 SEC,
  • 10. ROOT LOCUS
  • 11. BODE PLOT
  • 12. LAG COMPENSATOR
  • 13. SETTLING TIME: 0.126 FINAL VALUE:0.99
  • 14. ROOT LOCUS:
  • 15. BODE PLOT:
  • 16. RESULTS: Phase margin was 93.3 degree and After Lag compensator it become 47.3 degree. Settling time was 17secs and After Lag Compensator it become 0.126secs.

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