6533b7defe1ef96bd1275bef
RESEARCH PRODUCT
Multi-rate PID Controller for a Networked Control System
Julián SaltV. CasanovaÁNgel Cuencasubject
EngineeringControl theorybusiness.industryControl systemControl (management)Process (computing)Process controlPID controllerControl engineeringNetworked control systemPerformance improvementbusinessdescription
In networked control systems several devices (controller, process and others) share a common communication bus. This feature can suppose delays when those devices try to transmit information through the unique bus, leading to a non- regular behaviour, that is, different variables are sampled and updated in a non-uniform way along the time. As a result, if the control system is designed by means of classical design techniques, control performance can be degraded, since these techniques used not to consider those delays. In order to undertake this problem, a solution based on a PID controller's parameters readjustment is proposed. This approach permits to retune these parameters depending on the detected delay. In this way, a clear performance improvement can be observed for the network based control system.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-06-01 | 2007 IEEE International Symposium on Industrial Electronics |