Co-design of Controller and Communication Sequences

The problem of co-design of controller and communication sequence is addressed for networked control systems (NCSs) where the capacities of communication networks at both sides of the system are limited so that the sensors and the actuators cannot be accommodated simultaneously. The co-design problem is solved in three steps: determining feasible communication sequence sets for both sides; building output feedback controllers on the feasible communication sequence sets; setting up switching rules for the communication sequences based on the designed controller. Particularly, in the first step we find all the communication sequences that preserve controllability and observability of the plant; then in the second step we derive an output feedback controller applicable for all these communication sequences; and finally we establish a switching strategy for the communication sequences to switch among their feasible sets.