Comparing the delay compensator approach with fractional dead-time modelling in distributed real-time control systems

This paper compares the control performance of a distributed control system with variable sampling to actuation delay when using two different control solutions. The first one is a pole-placement controller with a fuzzy delay compensator and the second one an adaptive pole-placement with fractional dead-time modelling. The delay compensator is added to an existing controller that does not take into account the sampling to actuation delay while the second controller is designed to take that delay into account. The first approach requires the knowledge of the sampling to actuation delay. The results show that both approaches allow the improvement of the control performance. The advantages and disadvantages of each approach are outlined.