Journal Article

Stochastic Analysis and Control of Real-Time Systems with Random Time Delays

Johan Nilsson, Bo Bernhardsson, Björn Wittenmark


The paper discusses modeling and analysis of real-time systems subject to random time delays in the communication network. A new method for analysis of different control schemes is presented. The method is used to evaluate different suggested schemes from the literature. A new scheme, using so called timestamps, for handling the random time delays is then developed and successfully compared with previous schemes. The new scheme is based on stochastic control theory and a separation property is shown to hold for the optimal controller.


Delay compensation, distributed computer control systems, real-time systems, stochastic control, stochastic parameters, timing jitter

Automatica, 34:1, pp. 57–64, January 1998.

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