sdo.requirements.PZSettlingTime class

Package: sdo.requirements

Settling time bound

Description

Specify bounds on the real component of the poles of a linear system. The real component of poles are used to approximate the settling time. You can then optimize the model response to meet these bounds using sdo.optimize.

You must have Simulink® Control Design™ software to specify settling time requirements.

Construction

settime_req = sdo.requirements.PZSettlingTime creates a sdo.requirements.PZSettlingTime object and assigns default values to its properties.

settime_req = sdo.requirements.PZSettlingTime(Name,Value) uses additional options specified by one or more Name,Value pair arguments. Name is a property name and Value is the corresponding value. Name must appear inside single quotes (''). You can specify several name-value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Input Arguments

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside single quotes (' '). You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

'Description'

Requirement description. Must be a string.

Default: ''

'Name'

Requirement name. Must be a string.

Default: ''

'SettlingTime'

Settling time bound. Must be in seconds and a positive finite scalar.

Default: 2

'TimeUnits'

Time units of the requirement. Must be one of the following strings:

  • 'nanoseconds'

  • 'microseconds'

  • 'milliseconds'

  • 'seconds'

  • 'minutes'

  • 'hours'

  • 'days'

  • 'weeks'

  • 'months'

  • 'years'

Default: 'second'

'Type'

Settling time bound type. Must be one of the following strings:

  • '<=' — Upper bound

  • '>=' — Lower bound

  • '==' — Equality bound

  • 'min' — Minimization objective

Default: '<='

Properties

Description

Requirement description. Must be a string.

Default: ''

Name

Requirement name. Must be a string.

Default: ''

SettlingTime

Settling time bound. Must be in seconds and a positive finite scalar.

Default: 2

TimeUnits

Time units of the requirement. Must be one of the following strings:

  • 'nanoseconds'

  • 'microseconds'

  • 'milliseconds'

  • 'seconds'

  • 'minutes'

  • 'hours'

  • 'days'

  • 'weeks'

  • 'months'

  • 'years'

Default: 'second'

Type

Settling time bound type. Must be one of the following strings:

  • '<=' — Upper bound

  • '>=' — Lower bound

  • '==' — Equality bound

  • 'min' — Minimization objective

Default: '<='

Methods

evalRequirementEvaluate settling time bound on linear system

Copy Semantics

Handle. To learn how handle classes affect copy operations, see Copying Objects in the MATLAB® documentation.

Examples

Construct a settling time object and specify the settling time requirement.

r = sdo.requirements.PZSettlingTime;
r.SettlingTime = 2.5;

Alternatively, you can specify the setting time during construction.

r = sdo.requirements.PZSettlingTime('SettlingTime',2.5);

Alternatives

Use getbounds to get the bounds specified in a Check Pole-Zero Characteristics block.

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