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How to enter z with negative exponent in the numerator of a discrete transfer function in simulink plant block

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James Lockhart 2020-2-17

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回答： Renato SL 2020-2-18

采纳的回答： Renato SL

I need to enter the following discrete transfer function in simulink. My problem is with the negative exponents of z in the numerator.

1.026e-05 z^3 + 1.638e-06 z^2 + 5.248e-12 z + 6.787e-32

z^(-3) * -------------------------------------------------------

z^3 - 0.0003158 z^2 + 1.027e-23 z - 3.102e-44

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Renato SL 2020-2-18

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Maybe you can use a Delay block (documentation here).

The blocks would look like this:

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