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Modeling and control of a 4-wheel skid-steering mobile robot

TLDR
An extension of the kinematic control law at the dynamic and motor levels using the Lyapunov analysis and the backstepping technique is developed, and extensive simulation results for trajectory tracking and set-point cases are discussed.
Abstract
A mathematical model of a 4-wheel skid-steering mobile robot is presented in a systematic way. The robot is considered as a subsystem consisting of kinematic, dynamic and drive levels. Next, a designing process of a kinematic controller based on the algorithm introduced by (Dixon et al., 2001) is shown. An extension of the kinematic control law at the dynamic and motor levels using the Lyapunov analysis and the backstepping technique is developed. To validate the designed algorithm, extensive simulation results for trajectory tracking and set-point cases are discussed. Some deliberations concerning the tuning of the controller are presented, too.

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References
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Asymptotic stability and feedback stabilization

TL;DR: In this paper, the authors considered the problem of determining when there exists a smooth function u(x) such that x = xo is an equilibrium point which is asymptotically stable.
Book

Tyre and vehicle dynamics

TL;DR: In this article, the wheel-shimmy phenomenon is considered in the context of dynamic tire testing and tire characteristics and vehicle handling and stability, and a variety of models are proposed.
Journal ArticleDOI

Nonholonomic motion planning: steering using sinusoids

TL;DR: Methods for steering systems with nonholonomic c.onstraints between arbitrary configurations are investigated and suboptimal trajectories are derived for systems that are not in canonical form.
Journal ArticleDOI

Structural properties and classification of kinematic and dynamic models of wheeled mobile robots

TL;DR: The structure of the kinematic and dynamic models of wheeled mobile robots is analyzed and it is shown that, for a large class of possible configurations, they can be classified into five types, characterized by generic structures of the model equations.
Journal ArticleDOI

The Robust Control of Robot Manipulators

TL;DR: The methodology is compared with standard algorithms such as the computed torque method and is shown to combine in practice improved performance with simpler and more tractable controller designs.
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