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CDP Studio Documentation

  • Framework - Automation
  • MovingMaximum
  • 5.0.0

MovingMaximum Class

(Automation::MovingMaximum)

MovingMaximum operator that calculates maximum value of the input in the given timeframe. More...

Header: #include <MovingMaximum>
Inherits: CDPOperator<T>
  • List of all members, including inherited members

Public Functions

MovingMaximum(const CDPPropertyBase &in)
virtual ~MovingMaximum()

Reimplemented Public Functions

virtual void Configure(XMLPrimitive *operatorXML) override
virtual void Create(const char *shortName, CDPBaseObject *pParent) override
virtual unsigned int Process() override
  • 18 public functions inherited from CDPOperator
  • 17 public functions inherited from CDPOperatorBase
  • 49 public functions inherited from CDPBaseObject
  • 27 public functions inherited from CDP::StudioAPI::CDPNode
  • 22 public functions inherited from CDP::StudioAPI::ICDPNode

Additional Inherited Members

  • 1 public variable inherited from CDPOperatorBase
  • 1 static public member inherited from CDPBaseObject
  • 1 protected function inherited from CDP::StudioAPI::CDPNode
  • 8 protected variables inherited from CDPOperator
  • 5 protected variables inherited from CDPOperatorBase
  • 10 protected variables inherited from CDPBaseObject

Detailed Description

MovingMaximum operator that calculates maximum value of the input in the given timeframe.

Arguments

NameDescription
InThe default input value.
OutThe default output value.
TimeTime in seconds to take values into account while calculating maximum.

Note: If Time is zero the operator will do no calculation (operator output will be the same as input).

Note: If Time is negative the operator will do no calculation and alarm will be reported to parent component.

Properties

PropertyDescription
ResetClears the calculation. When toggled from 0 to 1 calculation "observation window" is cleared and output is set to input value.

When operator is used inside a signal its default input is automatically tied to signal's InternalValue or previous operator's output. Its default output is automatically tied to next operator's input or to signal's Value. See also CDP Operator Usage In CDP Signals.

Note: This operator can't be used in I/O Servers / CDPChannels because it requires to be run with a constant period. I/O Servers can't always guarantee periodic running since they may be in Offline state, or they can send/receive on change.

Example

Below is an example plot with Sine(Period=10) signal (cyan) and the same signal with MovingMaximum(Time=5) applied (orange):

Actual Processing Code of the MovingMaximum

unsigned int MovingMaximum<T>::Process()
{
  auto windowSize = d->valueHistory->GetWindowTime();
  if (windowSize < 0.0)
  {
    GetParent()->ReportConfigurationFault(this, "Negative window Time");
    d->faultReported = true;
    return STATUS_SIGNAL_FAULT;
  }

  if (d->valueHistory->GetReset())
    d->valueHistory->Reset();
  d->valueHistory->PushValue((T)m_input);
  m_output = d->CalculateMaximum((T)m_input);

  return STATUS_OK;
}

See also Argument.

Member Function Documentation

MovingMaximum::MovingMaximum(const CDPPropertyBase &in)

Constructs a MovingMaximum with input in.

[virtual] MovingMaximum::~MovingMaximum()

Destructs the MovingMaximum operator

[override virtual] void MovingMaximum::Configure(XMLPrimitive *operatorXML)

Reimplemented from CDPBaseObject::Configure().

[override virtual] void MovingMaximum::Create(const char *shortName, CDPBaseObject *pParent)

Reimplemented from CDPBaseObject::Create().

[override virtual] unsigned int MovingMaximum::Process()

Reimplemented from CDPOperatorBase::Process().

Returns STATUS_OK.

The content of this document is confidential information not to be published without the consent of CDP Technologies AS.

CDP Technologies AS, www.cdpstudio.com

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