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Altera_Forum's avatar
Altera_Forum
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13 years ago

Integration problem in Quartus II

I am trying to integrate a cosine wave to get sine wave.How can I do this??

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    You can do an integrator by adding the current signal value to the previous one (stored in a register) and dividing the result by a constant value.

    But why do you want to do it this way? It isn't the best way of generating a sine wave. Any error in the incoming signal, or any rounding error in the integration process, can accumulate over time and you risk having a drift on you output signal.
  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    Thank you for your help.Actually i am simulating a RL ac circuit to obtain the current but i get current shifted towards negative.So, how can i integrate the dynamic equation to obtain proper current waveform?

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    Sorry I need a bit more context about your system, what you are trying to measure and what you want to obtain.