[esp-r] Fwd: [ESP-r] a question on systems DDC control (from the archive)

[Jon Hand (clcv10)]

This is an older message which might be of interest to new members of  
the community...

A recent question on the background needed to use ESP-r with HVAC  
control....

Before embarking on the use of ESP-r to study DDC (direct digital  
control) and
especially control of detailed plant systems components it is best to  
review
the jargon and theory of control and control systems. Then ensure  
that you can
build the zones/flow and/or systems networks and use them before you  
attempt
to impose control upon it.

The HVAC control within esp-r emulates some real DDC reponses, such  
as PID
control, optimum start and duty cycle controllers, but again some  
knowledge of
how these controllers operate in real circumstances is required to  
adequately
define all parameters and to fine-tune such controls.

Points of refernence for building plant networks and controlling  
include 'The
modelling and simulation of energy management control systems' by J
MacQueen (available from the publications section of the esru  
website) and the
esp-r Data Model Manual (which should be in your distribution files
/esru/esp-r/manual/DATA_MODEL). The source code related to control
usually has commentary as to the theory and the logic being implemented.

UPDATE:
At a recent course in systems simulation a new set of documentation was
produced which might be of interest to those wishing to explore systems
simulation and control in ESP-r. Contact Nick Kelly  
<nick at esru.strath.ac.uk>
for more information.

-ESRU