Class PidIdentifier

Class that attempts to identify the parameters (such as Kp and Ti) of a PID-controller from a given set of time-series of the input and output of said controller.

Inheritance

object

PidIdentifier

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: TimeSeriesAnalysis.Dynamic

Assembly: TimeSeriesAnalysis.dll

Syntax

public class PidIdentifier

Constructors

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PidIdentifier(PidScaling, double, PidControllerType)

Default constructor

Declaration

public PidIdentifier(PidScaling pidScaling = null, double badValueIndicatingValue = -9999, PidControllerType type = PidControllerType.Unset)

Parameters

Type	Name	Description
PidScaling	pidScaling
double	badValueIndicatingValue
PidControllerType	type

Methods

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GetSimulatedU(PidParameters, UnitDataSet, bool, List<int>, bool)

Returns the simulated time series of the manipulated variable u as given by the PID-controller.

Declaration

public (double[], int) GetSimulatedU(PidParameters pidParams, UnitDataSet dataset, bool isPIDoutputDelayOneSample, List<int> indToIgnore, bool doVariableTimeBase = false)

Parameters

Type	Name	Description
PidParameters	pidParams
UnitDataSet	dataset	dataset, including including the "indicesToIgnore"
bool	isPIDoutputDelayOneSample
List<int>	indToIgnore
bool	doVariableTimeBase

Returns

Type	Description
(double[], int)	the simulated value, and the number of restarts

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Identify(ref UnitDataSet, bool, bool)

Identifies a PID-controller from a UnitDataSet

Declaration

public PidParameters Identify(ref UnitDataSet dataSet, bool tryDownsampling = true, bool tryVariableTimeBase = false)

Parameters

Type	Name	Description
UnitDataSet	dataSet	a UnitDataSet, where .Y_meas, .Y_setpoint and .U are analyzed
bool	tryDownsampling	try identification against a downsampled copy of the dataset internally
bool	tryVariableTimeBase	experimental: default is false (if set to true,several unit tests fail because "flipKp" is triggered.)

Returns

Type	Description
PidParameters	the identified parameters of the PID-controller

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Identify_Level1(ref UnitDataSet, bool, bool)

Identifies a PID-controller from a UnitDataSet

Declaration

public PidParameters Identify_Level1(ref UnitDataSet dataSet, bool doDetectFrozenData, bool doVariableTimeBase)

Parameters

Type	Name	Description
UnitDataSet	dataSet	a UnitDataSet, where .Y_meas, .Y_setpoint and .U are analyzed
bool	doDetectFrozenData	if true, the model attempts to find and ignore portions of frozen data(will also detect oversampled data)
bool	doVariableTimeBase

Returns

Type	Description
PidParameters	the identified parameters of the PID-controller