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We consider the tracking control of chained nonholonomic systems using integrator backstepping techniques. For any a priori given compact set. we can find a tracking controller such that the closed-loop error dynamics are uniformly asymptotically stable with a domain of attraction containing this set. A systematic controller design scheme is proposed via backstepping. Comparisons with previous tracking...
In this paper, we study pattern preserving path following control of unicycle teams with communication delays. The pattern of the vehicle team is said to be preserved if the distance between it and the desired one remains in some given range. A virtual vehicle formation is introduced such that each virtual vehicle becomes the pursuit target for the corresponding real vehicle. First, an input-driven...
In this paper, we consider finite-time tracking problems of a moving target by multiple mobile agents. The mobile agents with global sensing areas and limited actuation region are designed to track down a target with estimation error with the help of formation and coverage. In order to capture the target, its location and velocity are first estimated. With observer-based estimation and formation control,...
In this paper, virtual structure and artificial potential field (APF) based strategies are integrated to realize formation tracking control for a team of unicycles with collision avoidance property. Using virtual structure, each vehicle is required to track a virtual local leader (VLL) for formation maintenance. For inter-vehicle collision avoidance, the motion of each vehicle is restricted in a specified...
In this paper, we study the control strategy for connectivity guaranteed trajectory tracking for multi-agent systems using artificial potential based approach. Some agents, called active agents (AAs), which are attracted by the reference point (modeled as the virtual leader), lead the rest of the group to perform the task. Special features of our approach are that the group is not required to be initially...
This paper presents a framework to deal with the problem of global stabilization and global tracking control for the kinematic model of a wheeled mobile robot in the presence of input saturations. A model-based control design strategy is developed via a simple application of passivity and normalization. Saturated, Lipschitz continuous, time-varying feedback laws are obtained and illustrated in a number...
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