An algebraic Riccati equation for the discrete-time periodic prediction problem
Systems & Control Letters
A Period Assignment Algorithm for Real-Time System Design
TACAS '99 Proceedings of the 5th International Conference on Tools and Algorithms for Construction and Analysis of Systems
On task schedulability in real-time control systems
RTSS '96 Proceedings of the 17th IEEE Real-Time Systems Symposium
Task Period Selection and Schedulability in Real-Time Systems
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
IIS '97 Proceedings of the 1997 IASTED International Conference on Intelligent Information Systems (IIS '97)
Integration of off-line scheduling and optimal control
Euromicro-RTS'00 Proceedings of the 12th Euromicro conference on Real-time systems
Sampling period sensitivity of the optimal sampled data linear regulator
Automatica (Journal of IFAC)
Automatica (Journal of IFAC)
Brief paper: Disturbance decoupling in fault detection of linear periodic systems
Automatica (Journal of IFAC)
Stability Analysis of Networked Control Systems Using a Switched Linear Systems Approach
HSCC '09 Proceedings of the 12th International Conference on Hybrid Systems: Computation and Control
Output tracking control for continuous-time networked control systems with communication constraints
ACC'09 Proceedings of the 2009 conference on American Control Conference
H∞performance optimization for networked control systems with multiple sensors and actuators
CCDC'09 Proceedings of the 21st annual international conference on Chinese Control and Decision Conference
LQG optimal control of networked control systems with limited communication channels
CCDC'09 Proceedings of the 21st annual international conference on Chinese Control and Decision Conference
Schedulability analysis for CAN-based networked control systems with dynamic bandwidth management
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Methodology and tools for controller-networking codesign in wirelessHART
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
A descent algorithm for the optimal control of constrained nonlinear switched dynamical systems
Proceedings of the 13th ACM international conference on Hybrid systems: computation and control
ICIC'07 Proceedings of the intelligent computing 3rd international conference on Advanced intelligent computing theories and applications
Linear systems with medium-access constraint and Markov actuator assignment
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Optimal linear estimation for networked systems with communication constraints
Automatica (Journal of IFAC)
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In this paper a method for optimal off-line scheduling of a limited resource used for control purposes is presented. For various reasons, real-time communication channels are prone to have limited bandwidth. To overcome this obstacle, the rate of actions must be chosen accordingly at design time, both with respect to the limitation of the resource and to control performance. A resulting off-line schedule implements the rate of actions as a repetitive sequence of communication instants. Periodic control theory is used to define a cost functional for LQ-control, that measures the performance of a sampled-data system in relation to a desired continuous time performance. In contrast to uniform sampling, the communication sequence is here allowed to be time-varying. This approach results in a complex combinatorial optimization problem, whose solution gives the optimal off-line schedule, i.e., the sequence in which the actions should take place. The optimization problem is solved by a neighborhood search method where a heuristic method is used to generate initial guesses close to the optimum. The optimal schedule is typically such that the sampling is non-uniform, but the resulting LQ-control law is time-varying and takes this non-uniform sampling into account.