Modification of Dead Beat Algorithm for Control Processes with Time Delay

This paper describes extension of DB(n) control algorithm which improve the behaviour quality of control processes with time delay. This extension is called eDBd algorithm and it can function even if controller output is limited. The synthesis was derived for control loop with proportional third order behaviour of controlled plant. However, the algorithm can be generalised for controlled plants with higher order and applied for plants with non-minimal phase, for plant with time delay and also for plants with combination of non- minimal phase with time delay. This is shown in simulation experiments, which are described in the paper. For experimental evaluation of the control algorithm in real time, was used hardware in loop simulation, which replaces analogue model of real plant with A/D and D/A converters and PC as a controller. Copyright © 2005 IFAC