BuildingControlLib.BuildingControl.Nonstandardized.SequenceControl

# .BuildingControlLib.BuildingControl.Nonstandardized.SequenceControl

Model of a sequence control function

## Information

#### Overview

This model allows to implement a sequence control often deployed in building automation systems. A sequence control is used to implement for example that a heating coil valve of an air handling unit may only be opened when the respective cooling coil valve is closed. We model each sequence of a sequence control as a set of three linear curves defined on their intervals. The first curves interval ranges from -inf to xCooLHS, the second interval ranges from xCooLHS to xCooRHS and the third interval from xCooRHS to +inf.

#### Assumptions

We assume that only linear functions occur. One sequence control may be composed out of several sequences spanning with `nCurves`.

#### Parameterisation

To parameterise multiple sequences we use a multidimensional array which should be used as follows:

`CurvesIntervalCoordinates[nCurves,2,2] = {
{{xCooLHS_1,yCooLHS_1},{xCooRHS_1,yCooRHS_1}},
{{xCooLHS_2,yCooLHS_2},{xCooRHS_2,yCooRHS_2}},
...
{{xCooLHS_nCurves,yCooLHS_nCurves},{xCooRHS_1,yCooRHS_nCurves}},
}
`
where
`xCooLHS_n - X-coordinate of left hand side interval of the n-th curve
yCooLHS_n - Y-coordinate of left hand side interval of the n-th curve
xCooRHS_n - X-coordinate of right hand side interval of the n-th curve
yCooRHS_n - Y-coordinate of right hand side interval of the n-th curve
`

## Revisions

- March 07, 2017 by Georg Ferdinand Schneider & Georg Ambrosius Peßler:
  Implemented.

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