MATLAB CONTROL SYSTEM TOOLBOX 9 Specifikace stáhnout pdf (Strana 430)

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101

get

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16get

Purpose Access/query LTI property values

Syntax Value = get(sys,'PropertyName')

get(sys)

Struct = get(sys)

Description Value = get(sys,'PropertyName') returns the current value of the property

PropertyName oftheLTImodel sys. The string 'PropertyName' canbe the full

propertyname(forexample,

'UserData') oranyunambiguouscase-insensitive

abbreviation (for example,

'user'). You can specify any generic LTI property,

or any property specific to the model

sys (see “LTI Properties” for details on

generic and model-specific LTI properties).

Struct = get(sys) converts the TF, SS, or ZPK object sys into a standard

MATLAB structure with the property names as field names and the property

values as field values.

Without left-hand argument,

get(sys)

displays all properties of sys and their values.

Example Consider the discrete-time SISO transfer function defined by

h = tf(1,[1 2],0.1,'inputname','voltage','user','hello')

You can display all LTI properties of h with

get(h)

num = {[0 1]}

den = {[1 2]}

Variable = 'z'

Ts = 0.1

InputDelay = 0

OutputDelay = 0

ioDelay = 0

InputName = {'voltage'}

OutputName = {''}

InputGroup = {0x2 cell}

OutputGroup = {0x2 cell}

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