Download Co-design Approaches to Dependable Networked Control Systems by Christophe Aubrun, Daniel Simon, Ye-Qiong Song PDF

By Christophe Aubrun, Daniel Simon, Ye-Qiong Song

This e-book describes co-design ways, and establishes the hyperlinks among the QoC (Quality of regulate) and QoS (Quality of provider) of the community and computing assets. The equipment and instruments defined during this ebook consider, at layout point, a variety of parameters and homes that has to be chuffed via platforms managed via a community. one of the vital community houses tested are the QoC, the dependability of the method, and the feasibility of the real-time scheduling of projects and messages. right exploitation of those ways permits effective layout, prognosis, and implementation of the NCS. This ebook might be of serious curiosity to researchers and complicated scholars in automated regulate, real-time computing, and networking domain names, and to engineers tasked with improvement of NCS, in addition to these operating in similar community layout and engineering fields.

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Fixed priority scheduling Let the priority of the tasks τi be classified in decreasing orders: i < j ⇒ the priority of τi is higher than that of τj ; in the case of RM or DM, the priority of τi is 1 m in(D i ,T i ) . In [LIU 73], under pre-emptive RM, the following sufficient condition is established on the feasibility of the task set for ∀i, Di = Ti : n i= 1 1 Ci ≤ n · 2n − 1 . 31%. In [LIU 73], it has also been shown that the worst-case response time is obtained when the first instances of all the tasks are synchronized.

2886–2894, July 2008. , An active fault-tolerant control system against partial actuator failures, IEE Proceedings, Control Theory and Applications, vol. 149, p. 95– 104, 2002. , Bibliographical review on reconfigurable fault-tolerant control systems, 5th IFAC Symposium SAFEPROCESS’03, Washington, DC, USA, June 2003. , Stabilization of networked control systems: designing effective communication sequence, 16th IFAC world congress, Prague, Czech Republic, July 2005. J IANG, Modeling of vertical gyroscopes with consideration of faults, Proceedings of Safeprocess’2006, Beijing, China, 2006.

This number of missed deadlines is referred to as the distance to failure state from the current state. DBP assigns priority to a given instance by the distance from the current k-sequence to a failure state. Considering the above example with (3, 5)-firm constraint, the current instance is assigned the priority of 2 if the current 5-sequence is (11011), and is set the priority of 3 if the current 5-sequence is (10111). Note that in case of equal priority, EDF is used to break the tie. 2. Evolution of the k-sequence non-pre-emptive DBP, a first necessary schedulability condition has been given in [POG 03].

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