Stability analysis of embedded real-time scheduling systems subject to jitter
Chunhua Yang · Systems engineering and electronics · 2008
The stability properties of the embedded real-time scheduling systems whose control loops are subject to sampling and latency jitter are studied.Focused on the discrete state system whose jitters are not exactly known but bounded in intervals,a looser sufficient stability condition is proposed.Thus the time uncertainty is represented as a discrete-time closed-loop interval matrix,and a sufficient robust stability condition using Lyapunov theory and the infinite norm of the matrix is achieved.Furthermore,the overextension in interval computations is eliminated and the computation complexity is low in this proposed method.Simulation results show that the method is more computationally effective and less conservative.