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Matlab Simulink Help

  1. Dec 15, 2009 #1

    I'm trying to model a optic sytem, includes a IR light source, FTIR spectrometer, and lock-in amplifier. I wonder if anyone has knowledge about any tutorials for designing such a system.

  2. jcsd
  3. Feb 13, 2010 #2
    can anyone help me how to plot freq response in simulink
  4. Feb 13, 2010 #3
    to plot frequency response you have to use spectrum scope from simulink library .
    but you should take care of some things:
    first if you are using analog signal you cant see it directly on spectrum scope as you should use azero order hold before it with agood sampling time.
    also you should make the buffer size in spectrum scope bigger than the fft lenght
    also both of them is power of 2 as 4, 8,16,64,128 ...etc.
    i hope this help you

  5. Feb 15, 2010 #4
    hello there
    i am actually designiing a pid controller for amb position control
    can u tell me how to plot disturbance freq sweep
  6. Feb 21, 2010 #5
    thanx for the reply oufa
    can you also tell me
    1. how can i perform cos and sine wave signal sweep at a specified amplitude
    2. how to draw root locus for a system?
  7. Oct 11, 2012 #6
    Could u try these fiels my help u
    Plz can u help me to find the LED block in simulink, I tried in Matlab simulink 2010b, and I could not find it


    View attachment SirnulinkTMbl ocks for simulation of light sources.pdf


    View attachment Building an Optical Transmitter and Receiver.pdf
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