Title :
Analysis of time delays in synchronous and asynchronous control loops
Author :
Wittenmark, Björn ; Bastian, Ben ; Nilsson, Johan
Author_Institution :
Dept. of Autom. Control, Lund Inst. of Technol., Sweden
Abstract :
We describe how to determine the time delays caused by synchronous and asynchronous control loops. These time delays can vary in a quite irregular way and can cause problems for the control loops closed over a communication network of, for instance, field-buses. Different setups allowing an arbitrary number of communication layers are analyzed. The theoretical derivations are illustrated with a simple but realistic example
Keywords :
closed loop systems; delays; field buses; signal processing; synchronisation; telecommunication networks; asynchronous control loops; closed loop systems; communication network; field-buses; synchronous control loops; time delays; Actuators; Automatic control; Closed loop systems; Communication networks; Communication system control; Control systems; Delay effects; Sampling methods; Sensor systems; Timing;
Conference_Titel :
Decision and Control, 1998. Proceedings of the 37th IEEE Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
0-7803-4394-8
DOI :
10.1109/CDC.1998.760685
