blockConcaveLookupNegative
Concave Lookup with negative slope; fixpoints are (0,y0) and (1,0)
Extends from Interfaces.PartialConverters.SISO_Conversion (Partial SISO converter class with input and output conversions for lookup functions).
Information
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The output y is derived using the formula:
The function will go through the point (0,y0) and the output will be 0 for u ≥ 1 and y0 for u ≤ 0. The input u should thus be in the range [0,1]. The following graph shows plots for the function for different slopes:
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See also
ConcaveLookupPositive, ConvexLookupNegative, ConvexLookupPositive
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | s | 1 | Slope parameter (1 <= slope <= 50) |
| Real | y0 | 1 | Value of y when input is zero or less (intercept) |
| Time Conversion | |||
| Boolean | convertInput (from SISO_Conversion) | false | = true, if the input value is a rate or time variable that needs to be converted |
| Boolean | inputIsRate (from SISO_Conversion) | false | = true, if the input is given in units of time, otherwise it is assumed to be a rate |
| Boolean | convertOutput (from SISO_Conversion) | false | = true, if the output value is a rate or time variable that needs to be converted |
| Boolean | outputIsRate (from SISO_Conversion) | false | = true, if the output is given in units of time, otherwise it is assumed to be a rate |
| TimeBases | timeBaseInput (from SISO_Conversion) | TimeBases.seconds | TimeBase to convert from (default = seconds) |
| TimeBases | timeBaseTableIn (from SISO_Conversion) | modelSettings.modelDisplayTimeBase | TimeBase used for the lookup function input (default = modelDisplayTimeBase) |
| TimeBases | timeBaseTableOut (from SISO_Conversion) | modelSettings.modelDisplayTimeBase | TimeBase assumed for the lookup function output (default = modelSettings.modelDisplayTimeBase) |
| TimeBases | timeBaseOutput (from SISO_Conversion) | TimeBases.seconds | TimeBase used for the output (default = seconds) |
| Advanced | |||
| Boolean | strict | true | = true, if strict limits with noEvent(..) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Connectors.RealInput | u (from SISO) | Input |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| RealOutput | y (from SO) | ||
| ModelSettings | modelSettings (from SISO_Conversion) |
Revisions
- Modified in v2.0.0.