In this paper we describe a hybrid system approach for high consumption industrial furnace control. The problem is observed in systematic way starting from the need for modeling this system as hybrid. For description of this behavior we use the Hybrid System Description Language. After that, we design an optimal controller for the furnace and we simulate and compare the controller with other re...

We propose a class of distribution-free rank-based tests for the null hypothesis of a unit root. This class is indexed by the choice of a reference density g, which needs not coincide with the unknown actual innovation density f . The validity of these tests, in terms of exact finite sample size, is guaranteed, irrespective of the actual underlying density, by distribution-freeness. Those tests...

In the absence of valid medicines or vaccine, quarantine and isolation strategies are the most important and effective measures against the SARS outbreaks. This paper discusses the application of the optimal and sub-optimal control for SARS outbreak control via the Pontryagin’s Maximum Principle and genetic algorithm, respectively. To this end, a pair of control variables representing the quara...

This paper proposes a trajectory planning and tracking approach for bilinear systems that approximate weakly nonlinear systems, based on orthogonal functions and especially the use of operational integration and product matrices. These operational tools allow the conversion of a bilinear differential state equation into an algebraic one depending on initial and final conditions. Arranging and s...

This paper demonstrates a distributed on-line service selection(probe/access) scheme: optimal stopping web service selection scheme based on the rate of return problem from optimal stopping theory. There are three differences between our scheme and the conventional schemes. Firstly, it does not need to probe all web services, and only probe a few web services. Secondly, our scheme focuses on ma...

The effect of changes in operating conditions due to fault occurrences can alter performances in industrial processes. One way of preventing performances from degradation is to modify the control law in order to maintain the functioning of the process under acceptable operating conditions. In this paper, a Fault Tolerant Control of an Activated Sludge Process is presented. Free fault data are r...

The present chapter is concerned with presenting an approach for the synthesis of a gainscheduled flight control law that assures compliance to trajectory tracking requirements. More precisely, a strategy is proposed for improving the tracking performances of a baseline controller, obtained by conventional synthesis techniques, by tuning its gains. The approach is specifically designed for atmo...

The satellite thruster's configuration plays also an important role in providing the attitude control torques. In this paper, after discussing the gimbal thruster's structure and its benefits, several configurations based on 2, 3 and 4 gimbal thrusters are investigated in order to identify the most suitable orientation that consume less fuel and raise reliability. Then, a 3-axis attit...

I t is shown that the calculation of the performance of a class of suboptimal linear control systems is similar to the calculation of the performance of an equivalent optimal system. The performances of both optimal and suboptimal linear systems have terms for cost owing to uncertainty about the initial state of the plant, a nonzero mean of the initial state, error in the estimate of the state,...

In this paper, we propose an aperiodic formulation of Model Predictive Control for distributed agents with additive bounded disturbances. In the proposed method, each agent solves an Optimal Control Problem only when certain control performances cannot be guaranteed according to certain triggering rules. This could lead to the reduction of energy consumption and the alleviation of over-usage of...