MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications télécharger pdf (Page 49)

100

101

LTI Properties

2-31

To display all of the properties of an LTI model sys (and their values), use the

syntax

get(sys). In this example,

get(h)

produces

num = {[0 0 100]}

den = {[1 5 100]}

Variable = 's'

Ts = 0

InputDelay = 0

OutputDelay = 0

ioDelay = 0

InputName = {'voltage'}

OutputName = {'current'}

InputGroup = {0x2 cell}

OutputGroup = {0x2 cell}

Notes = {'A simple circuit'}

UserData = []

Notice thatdefault (output) values have been assigned to any LTI properties in

this list that you have not specified.

Finally, you can also access property values using direct structure-like

referencing. This topic is explained in the next section.

Direct Property Referencing

An alternative way to query/modify property values is by structure-like

referencing. Recall that LTI objects are basic MATLAB structures except for

the additional flag that marks them as TF, ZPK, SS, or FRD objects (see “LTI

Objects” on page 2-3). The field names for LTI objects are the property names,

so you can retrieve or modify property values with the structure-like syntax.

PropertyValue = sys.PropertyName% gets property value

sys.PropertyName = PropertyValue% sets property value

These commands are respectively equivalent to

PropertyValue = get(sys,'PropertyName')

set(sys,'PropertyName',PropertyValue)

For example, type

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 590 591

Commentaires sur ces manuels

Pas de commentaire

MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications Page 49

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel MATLAB CONTROL SYSTEM TOOLBOX 9