Finite element error analysis for state-constrained optimal control of the Stokes equations
Fixed poles of optimal control by measurement feedback
This paper is concerned with the flexibility in the closed loop pole location when solving the optimal control problem (also called the optimal disturbance attenuation problem) by proper measurement feedback. It is shown that there exists a precise and unique set of poles which is present in the closed loop system obtained by any measurement feedback solution of the optimal control problem. These “ optimal fixed poles” are characterized in geometric as well as structural terms. A procedure...
Flow control in connection-oriented networks: a time-varying sampling period system case study
In this paper congestion control problem in connection-oriented communication network with multiple data sources is addressed. In the considered network the feedback necessary for the flow regulation is provided by means of management units, which are sent by each source once every M data packets. The management units, carrying the information about the current network state, return to their origin round trip time RTT after they were sent. Since the source rate is adjusted only at the instant of...
Formal adjoints of linear DAE operators and their role in optimal control.
Free end-point linear-quadratic control subject to implicit continuous- time systems: Necessary and sufficient conditions for solvability