A New Structure of Networked Control System using Time Stamp

A new control structure for real-time control systems over computer network is proposed. In general computer network has no real-time property for data exchange. Thus the construction of feedback system over the computer network can be considered as a design of hybrid system of real-time and non-real-time systems. Here a new structure of communication and control strategies are proposed. Remote controller sends not a single control input but a set of control inputs with time stamps as a datagram. Local controller receives the set of control inputs and chooses an appropriate input according to the arrival time. The effectiveness are demonstrated through the application of bilateral teleoperation system.