A new design approach for Safety Critical Distributed Control System

Abstract

In terms of the design of SCDCS (Safety Critical Distributed Control System), MATI (Maximum AllowableTransfer Interval) is one of the important design reference parameters that influences message transmission period and network scheduling strategy. To obtain its upper bound, Lyapunov theory and matrix measure are applied to analyze SCDCS which is networked only in its feedback path, and a sufficient condition is induced which can guarantee that the SCDCS is asymptotically stable. Furthermore, an explicit and simple method of obtaining MATI for SCDCS is derived on the base of that stable condition. The simulation validates the method and shows that the method is much less conservative than the existing methods. Index Terms -safety critical DCS, maximum allowable transfer interval, asymptotically stable

Research and Improvement of Deficit Round Robin Algorithm Based on CAN Bus

“…CAN bus has many advantages and widely applied, but its priority-based transmission characteristics, making some low-priority datas waiting for a long time, and even cannot be transferred, may have negative impact on the entire system [3]. To change this state and make up for CAN Bus serious injustice that, we introduce a scheduling algorithm: DRR scheduling algorithm.…”