.Buildings.Fluid.DXSystems.Cooling.BaseClasses.Functions.speedShift

Information

This function interpolates data for intermediate compressor speeds using cubic hermite splines with linear extrapolation. To avoid linear extrapolation below minimum standard speed, the origin is added to the modified arrays.

Interface

function speedShift
  input Real spe "Speed of compressor";
  input Real speSet[:] "Array of standard compressor speeds";
  input Real u[:] "Array to be interpolated";
  output Real y "Interpolated value";
end speedShift;

Revisions

• August 24, 2012, by Michael Wetter:
  Moved function from Buildings.Fluid.DXSystems.BaseClasses to Buildings.Fluid.DXSystems.Cooling.BaseClasses.Functions because the package Buildings.Fluid.DXSystems.BaseClasses already contains a block called SpeedShift which gives a clash in file names on file systems that do not distinguish between upper and lower case letters.
• August 9, 2012, by Kaustubh Phalak:
  Origin added in support points to avoid linear extrapolation below standard rotational speed.
• August 1, 2012 by Kaustubh Phalak:
  First implementation.