Lookup_Table

Table-based lookup with manual input of the interpolation table

Diagram

Information

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Using the lookup converter →TableFunction the normalized current value of the stock, which is connected via the StockInfoInput connector, is used as input to an interpolation table (manual input) to obtain the output y.

The value used for the normalization is a constant by default (referenceValue = 1); if hasConstantReference = false the optional input u is used instead.

Notes

The reference value for normalization should be strictly positive; the divison for normalization is protected against divison by zero and will return zero in that case.

Instead of using the current value of a connected stock, the input connector u can be used as basis by setting hasStockInfoInput = false.

Parameters (9)

pol	Value: "±" Type: String Description: Polarity
referenceValue	Value: 1 Type: ReferenceType Description: Constant reference value to normalize input
hasStockInfoInput	Value: true Type: Boolean Description: = true, if the input is given by the input connector u instead of stockInfoInput
hasConstantReference	Value: true Type: Boolean Description: = true, if the reference value for the stock is given by a constant parameter
tableData	Value: fill(0.0, 2, 2) Type: Real[:,:] Description: Table matrix (grid = first column; e.g., table=[0,2])
smoothness	Value: Smoothness.LinearSegments Type: Smoothness Description: Smoothness of table interpolation
column	Value: 2 Type: Integer Description: Column of table to be interpolated (default = 2)
extrapolation	Value: Extrapolation.HoldLastPoint Type: Extrapolation Description: Extrapolation of data outside the definition range
verboseExtrapolation	Value: false Type: Boolean Description: = true, if warning messages are to be printed if table input is outside the definition range

Connectors (4)

	stockInfoInput	Type: StockInfoInput Description: Input of record with stock-related information
	u_ref	Type: RealInput Description: Reference value for stock
	y	Type: RealOutput Description: Output of output type
	u	Type: RealInput Description: Input for lookup (optional)

Components (3)

	normalizedStock	Type: DmnlInput Description: Input u will be stated as dimensionless fraction with regard to a reference value
	absoluteSensor	Type: AbsoluteSensor Description: Reports basic stock–related information
	lookup	Type: TableFunction Description: Table function defined by external data on file using Modelica's CombiTable format