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This paper presents a novel de-centralized cycle-free traffic signal controller that adapts to changes in traffic demand. Traffic signal timing optimization is achieved using a Nash Bargaining game-theoretic framework, where each phase is modeled as a player in a game in which the players cooperate to reach a mutual agreement. The Nash bargaining solution is applied to obtain the optimal control strategy,...
This paper presents a novel isolated traffic signal control algorithm based on a game-theoretic optimization framework. The algorithm models a signalized intersection considering four phases, where each phase is modeled as a player in a game in which the players cooperate to reach a mutual agreement. The Nash bargaining solution is applied to obtain the optimal control strategy, considering a variable...
An adaptive failure compensation control scheme is developed based on linear quadratic (LQ) control for discrete-time possibly nonminimum phase systems with unknown actuator failures with characterizations that some unknown system inputs are stuck at some unknown fixed or varying values at unknown time instants. The failure compensation control problem is formulated as a new LQ control problem. Based...
An adaptive actuator failure compensation scheme is developed for attitude tracking control of a spacecraft with four reaction momentum wheels, in the presence of unknown spacecraft inertia parameters, nonlinear dynamics of wheel angular momentum and uncertain actuator failures. The proposed scheme employs a composite adaptive control design which incorporates an adaptive backstepping feedback control...
In this paper, an LQ control based actuator failure compensation control scheme is developed for possibly nonminimum phase systems with actuator failures. The failure compensation control problem is formulated as a new LQ control problem for systems with failure disturbances. A new disturbance rejection problem for systems with unmatched disturbances is solved through an LQ based control algorithm...
In this paper, a multivariable adaptive disturbance rejection scheme is developed for solving the nonlinear aircraft turbulence compensation problem. A nominal design for output rejection of unmatched input disturbances is first constructed based on feedback linearization, for which the relative degree characterization of the control and disturbance system models is specified as a key design condition...
This paper conducts a survey on aircraft dynamic models under atmosphere turbulence conditions, for the study of adaptive turbulence rejection flight control, an open area of research of both theoretical and practical importance. The survey starts from the basic nonlinear dynamic and kinematic equations of aircraft under turbulence disturbances, and then addresses the basic linearized longitudinal...
A new adaptive actuator failure compensation control scheme is developed, using a multi-layer multiple-model and switching approach, for effective and faster compensation of failure uncertainties, and improvement of system transient performance. A basic-layer multiple-model adaptive compensation control structure is first developed to ensure effective failure compensation, by using a set of basic...
The integrated contouring controller, that includes feedback, zero phase error tracking controller(ZEPTC), and cross coupling controller (CCC), is considered in this study. A parameter adaptation algorithm (PAA) is employed to both ZPETC and CCC to form an adaptive integrated contouring controller. An optimal control gain for CCC is designed using the contour error transfer function. Simulations verify...
A responsive and effective humanitarian relief is needed when the disaster happens suddenly. However, there are many sophisticated reasons prevent the coordination with other relief organizations and then decrease the responsibility and efficiency of relief. Thus a hybrid facility location model with non-fixed levels, shortest-longest radiuses, limited capacities, least warehouses and hubs, and uneven...
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