A tutorial account of variable structure control with sliding mode is presented. The purpose is to introduce in a concise manner the fundamental theory, main results, and practical applications of this powerful control system design approach. This approach is particularly attractive for the control of nonlinear systems. Prominent characteristics such as invariance, robustness, order reduction, and control chattering are discussed in detail. Methods for coping with chattering are presented. Both linear and nonlinear systems are considered. Future research areas are suggested and an extensive list of references is included. >

Variable structure control: a survey

The Theory of Matrices. By F R. Gantmacher. Two volumes, pp. 374 and 276. 1959. (Translated from the Russian by K. A. Hirsch; Chelsea Publishing Company, New York)

This paper reviews some main results and progress in distributed multi-agent coordination, focusing on papers published in major control systems and robotics journals since 2006. Distributed coordination of multiple vehicles, including unmanned aerial vehicles, unmanned ground vehicles, and unmanned underwater vehicles, has been a very active research subject studied extensively by the systems and control community. The recent results in this area are categorized into several directions, such as consensus, formation control, optimization, and estimation. After the review, a short discussion section is included to summarize the existing research and to propose several promising research directions along with some open problems that are deemed important for further investigations.

/pdf/an-overview-of-recent-progress-in-the-study-of-distributed-1xnb6e12se.pdf

An Overview of Recent Progress in the Study of Distributed Multi-Agent Coordination

This article reviews some main results and progress in distributed multi-agent coordination, focusing on papers published in major control systems and robotics journals since 2006. Distributed coordination of multiple vehicles, including unmanned aerial vehicles, unmanned ground vehicles and unmanned underwater vehicles, has been a very active research subject studied extensively by the systems and control community. The recent results in this area are categorized into several directions, such as consensus, formation control, optimization, task assignment, and estimation. After the review, a short discussion section is included to summarize the existing research and to propose several promising research directions along with some open problems that are deemed important for further investigations.

An Overview of Recent Progress in the Study of Distributed Multi-agent Coordination

Technical Communique: Finite-time control of linear systems subject to parametric uncertainties and disturbances

Brief paper: Novel decentralized adaptive strategies for the synchronization of complex networks

In this paper we consider the problem of covering the image of a given function by a polytope. This problem arises in both the robust and quadratic stability context. We present two main algorithms: the first one performs such a covering and works under quite general assumptions on the nature of the function; the second one is iterative and allows us to improve at will the goodness of the covering. The convergence properties of this algorithm are also discussed. Finally two examples of application of our techniques are presented.

Robust and quadratic stability via polytopic set covering

This paper is concerned with the design of improved AQM control schemes. An appropriate robust H/sup /spl infin// controller for time-delay systems is proposed and hence used to design a suitable AQM control scheme. A robust observer is used to estimate online the transmission window resulting in a novel output feedback stabilization scheme for AQM. The resulting control law is first validated and tested firstly through numerical and experimental methods.

Robust output feedback active queue management control in TCP networks

This paper is concerned with the design of improved AQM control schemes by means of an appropriate reduction method for time-delay systems. The aim is to stabilize the delay differential equations model of TCP (transmission control protocol) behavior. A robust observer is introduced to estimate online the transmission window resulting in a window-based congestion control scheme. The robust stability and dynamic behavior in the presence of network parameter uncertainties is validated and tested through numerical simulations on a single bottleneck.

A robust approach to active queue management control in networks

In this paper, an engineering interpretation of small world effects in networks is given. After briefly summarizing the main features of small world networks, an attempt is made to investigate the relevance that small world effects can have in communication networks. The aim is that of investigating the relationship between small world behaviour and some of the characteristic parameters associated to the overall performance of the network. It is shown that the performance of a communication network is indeed affected by the presence or absence of small world effects. Namely, the link between these effects and the average throughput and delivery time on the network is established and assessed through numerical simulations.

F. Garofalo

Papers

Brief paper: Novel decentralized adaptive strategies for the synchronization of complex networks

Robust and quadratic stability via polytopic set covering

Robust output feedback active queue management control in TCP networks

A robust approach to active queue management control in networks

Small world effects in networks: an engineering interpretation