#ZACC GROFF GENERATOR#

In this paper, the event-triggered dynamic output feedback control problem for linear systems with actuator saturation is investigated. Numerical examples are presented to illustrate the application of the proposed methods.

#ZACC GROFF GENERATOR#

In the co-design context, the event generator and the control law or the observer can be simultaneously designed. In the emulation design context, the control law (and the observer gains, when appropriate) are given and the task is to compute the event generator parameters.

Two distinct approaches, exact time-discretization and looped-functional techniques, are considered to ensure asymptotic stability in the presence of the dwell-time.įor both system classes, emulation design and co-design are addressed. a time interval after each event where the trigger condition is not evaluated, to cope with Zeno behavior. In the case of Lur'e systems, observer-based state-feedback is addressed with event generators that have access only to the system output and observed state, but it imposes the need of a dwell-time, i.e. An event-triggering strategy which uses weighting matrices to strive for less events is proposed and then it is proven that this strategy does not lead to Zeno behavior. In the context of rational systems, state-feedback control is considered and differential-algebraic representations are used as means to obtain tractable stability conditions. Lyapunov theory techniques are used in both cases to derive asymptotic stability conditions in the form of linear matrix inequalities that are then used in convex optimization problems as means of computing the control system parameters aiming at a reduction of the number of events generated. In the present work, the design of event-triggered controllers for two classes of nonlinear systems is addressed: rational systems and Lur'e type systems. The power allocation under ETT was thoroughly evaluated under two nominal control schemes to establish a relation between performance and feedback reduction. These two approaches establish a trade-off between complexity and conservativeness. Two schemes are employed to define the ETT while preserving closed-loop stability: a piecewise quadratic Lyapunov argument and a perturbed linear system approach. Hence, if the feedback signalling does not change significantly from the previous sample, no feedback transmission is assigned to reduce bandwidth usage. The power allocation under ETT is based on a nominal control that guarantees internal stability and performance. Motivated by these ideas, the authors present here a power allocation strategy based on an eventtriggered transmission (ETT) to reduce the feedback signalling in the network. Thus, the appeal of an event-triggered scheme arises naturally over more traditional, but less efficient, periodic time-triggered control solutions. A practical implementation calls on the intuition of using limited resources, only when are strictly required. Transmission power control constitutes a core feature required to achieve a desired quality of service in wireless networks.

Zacc groff