Time-stamped predictive functional control for networked control systems with random delays

摘要

The random delays in a networked control system (NCS) degrade control performance and can even destabilize the control system. To deal with this problem, the time-stamped predictive functional control (PFC) algorithm is proposed, which generalizes the standard PFC algorithm to networked control systems with random delays. The algorithm uses the time-stamp method to estimate the control delay, predicts the future outputs based on a discrete time delay state space model, and drives the control law that applies to an NCS from the idea of a PFC algorithm. A networked control system was constructed based on TrueTime simulator, with which the time-stamped PFC algorithm was compared with the standard PFC algorithm. The response curves show that the proposed algorithm has better control performance.