.Buildings.Controls.OBC.CDL.Integers.Change

Information

Block that evaluates the integer input u to check if its value changes.

• When the input u changes, the output y will be true, otherwise it will be false.
• When the input u increases, the output up will be true, otherwise it will be false.
• When the input u decreases, the output down will be true, otherwise it will be false.

Revisions

• May 3, 2022, by Michael Wetter:
  Renamed parameter y_start to pre_u_start.
  This is for #2990.
• January 26, 2021, by Michael Wetter:
  Changed initialization of pre(u) to use the initial value of the input rather than 0.
  This is for #2294.
• July 18, 2018, by Michael Wetter:
  Revised model and icon.
• July 13, 2018, by Jianjun Hu:
  First implementation, based on the implementation of the Modelica Standard Library.