.Buildings.Obsolete.Controls.Continuous.PIDHysteresisTimer

Information

Block of a controller for set point tracking with a hysteresis element that switches the controller on and off, and a timer that prevents the controller to short cycle.

The controller is similar to Buildings.Obsolete.Controls.Continuous.PIDHysteresis but in addition, it has a timer that prevents the controller from switching to on too fast. When the controller switches off, the timer starts and avoids the controller from switching on until minOffTime seconds elapsed.

Revisions

• June 1, 2020, by Michael Wetter:
  Corrected wrong convention of reverse and direct action.
  Changed default configuration from PID to PI.
  This is for issue 1365.
• September 29, 2016, by Michael Wetter:
  Removed parameter limitsAtInit because it is no longer used in the PID controller.
• March 15, 2016, by Michael Wetter:
  Changed the default value to strict=true in order to avoid events when the controller saturates. Also assigned propogated values to be final. This is for issue 433.
• February 24, 2010, by Michael Wetter:
  Changed PID controller from Modelica Standard Library to PID controller from Buildings library to allow reverse control action.
• October 2, 2009, by Michael Wetter:
  Fixed error in default parameter eOn.
• February 9, 2009, by Michael Wetter:
  First implementation.