Undefined function 'tf' for input arguments of type 'double'.

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Henry Brown
Henry Brown 2018-11-16
回答： Mark Sherstan 2018-11-16
I am plotting a pretty simple transfer function to make bode plots magnitude and phase.
code looks something like this
>> num = [1000 10000];
>> den = [1 1100 100000];
>> G = tf(num, den)
>>bode(G), grid
Now, this works and I get the right graphs when I use the online version.
HOWEVER
When I use my PC version I get "Undefined function 'tf' for input arguments of type 'double'."
I'm not sure how to fix this.

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回答（1 个）

Mark Sherstan
Mark Sherstan 2018-11-16
You need the Control Systems Toolbox installed.

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