MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications télécharger pdf (Page 419)

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filt

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MIMO transfer functions are regarded as arrays of SISO transfer functions

(one per I/O channel), each of which is characterized by its numerator and

denominator. The input arguments

num and den are then cell arrays of row

vectors such that:

•

num and den have as many rows as outputs and as many columns as inputs.

• Their entries

num{i,j} and den{i,j} specify the numerator and

denominator of the transfer function from input

j to output i.

If all SISO entries have the same denominator, you can also set

den to the row

vector representation of this common denominator. See also MIMO Transfer

Function Models for alternative ways to specify MIMO transfer functions.

Remark filt behaves as tf with the Variable property set to 'z^-1' or 'q'.Seetf

entry below for details.

Example Typing the commands

num = {1 , [1 0.3]}

den = {[1 1 2] ,[5 2]}

H = filt(num,den,'inputname',{'channel1' 'channel2'})

creates the two-input digital filter

with unspecified sample time and input names

'channel1' and 'channel2'.

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MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications Page 419

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