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Discrete transfer function not working correctly

Discrete transfer function not working correctly

‎01-24-2020 09:06 AM

So I discretised a continuous integrator using tustin method, and feed its numerator and denominator into the discrete FXP transfer function. Then I tested it by feeding a sinusoidal input and and I am expecting a cosine. But the output is instead an increasing cosine as shown (like a drift sort of effect). Does anyone know why?

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Re: Discrete transfer function not working correctly

‎01-24-2020 05:15 PM

Incorrect initial conditions (probably).

Consultant Control Engineer
www-isc-ltd.com
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