Browsing Former Research Lines by Author "Vargas, A.N."
Now showing items 112 of 12

A Systematization of the Unscented Kalman Filter Theory
Menegaz, H.M.T.; Ishihara, J.Y.; Borges, G.A.; Vargas, A.N. (20151231)In this paper, we propose a systematization of the (discretetime) Unscented Kalman Filter (UKF) theory. We gather all available UKF variants in the literature, present corrections to theoretical inconsistencies, and provide ... 
Almost periodic parameters for the second moment stability of linear stochastic systems
Vargas, A.N.; Do Val, J.B.R. (20141231)The technical note presents conditions to assure the uniform second moment stability for a class of linear timevarying stochastic systems. The system parameters are assumed to be almost periodic, a concept that is weaker ... 
Control of a hysteresis model subject to random failures
Lévano, E.; Vargas, A.N. (20151231)The note presents conditions to assure weak stability in the mean for a hysteresis BoucWen model controlled by a proportionalintegral controller subject to random failures. When a failure happens, the controller turns ... 
Control of temperature to suppress the population of Rhyzopertha dominica (F.) (Coleoptera, Bostrichidae) in a grain silo prototype
De Souza, D.W.F.; Vargas, A.N.; Do Val, J.B.R.; Freitas, A.M.; Lorini, I. (20131231)This note presents some results from laboratory experiments that were conducted to characterize the influence of temperature in the mortality of adults of the insect known as lesser grain borer, Rhyzopertha dominica (F.). ... 
Gradientbased optimization techniques for the design of static controllers for Markov jump linear systems with unobservable modes
Vargas, A.N.; Bortolin, D.C.; Costa, E.F.; Do Val, J.B.R. (20141231)The paper formulates the static control problem of Markov jump linear systems, assuming that the controller does not have access to the jump variable. We derive the expression of the gradient for the cost motivated by the ... 
Modeindependent H2control of a DC motor modeled as a Markov jump linear system
Oliveira, R.C.L.F.; Vargas, A.N.; Val, J.B.R.D.; Peres, P.L.D. (20141231)This brief presents a control strategy for Markov jump linear systems (MJLS) with no access to the Markov state (or mode). The controller is assumed to be in the linear statefeedback format and the aim of the control ... 
On the control of Markov jump linear systems with no mode observation: Application to a DC Motor device
Vargas, A.N.; Costa, E.F.; Do Val, J.B.R. (20131231)This paper deals with the control problem of discretetime Markov jump linear systems for the case in which the controller does not have access to the state of the Markov chain. A necessary optimal condition, which is ... 
On the numerical solution of the control problem of switched linear systems
Vargas, A.N.; Ishihara, J.Y.; Do Val, J.B.R. (20131231)This paper presents a method to compute an epsilonoptimal solution of the control problem of switched linear systems. A difficulty that emerges in the evalution of the optimal solution is that the cardinality of the ... 
Output feedback of Markov jump linear systems with no mode observation: An automotive throttle application
Vargas, A.N.; Acho, L.; Pujol, G.; Costa, E.F.; Ishihara, J.Y.; Do Val, J.B.R. (20160101)Summary The note presents an output feedback control strategy for Markov jump linear systems with no mode observation. Based on minimizing a finitetime quadratic cost, we derive an algorithm that generates output feedback ... 
Robust ‚H2 static output feedback to control an automotive throttle valve
Vargas, A.N.; Acho, L.; Pujol, G.; Oliveira, R.C.L.F.; Do Val, J.B.R.; Peres, P.L.D. (20141231)The paper presents a control strategy for an automotive electronic throttle body, a device largely used into vehicles to increase the efficiency of the combustion engines. The synthesis of the proposed controller is based ... 
Second moment constraints and the control problem of Markov jump linear systems
Vargas, A.N.; Furloni, W.; Do Val, J.B.R. (20131231)This paper addresses the optimal solution for the regulator control problem of Markov jump linear systems subject to second moment constraints. We can characterize and obtain the solution explicitly using linear matrix ... 
Stationary policies for the second moment stability in a class of stochastic systems
Vargas, A.N.; Do Val, J.B.R. (20111231)This paper presents a study on the uniform second moment stability for a class of stochastic control system. The main result states that the existence of the longrun average cost under a stationary policy is equivalent ...