Volume 28, Issue 6 pp. 2082-2096
RESEARCH ARTICLE

Robust finite-time consensus formation control for multiple nonholonomic wheeled mobile robots via output feedback

Yingying Cheng

Yingying Cheng

School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, China

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Ruting Jia

Ruting Jia

Department of Electrical and Computer Engineering, California State University at Northridge, Northridge, CA, USA

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Haibo Du

Corresponding Author

Haibo Du

School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, China

Correspondence

Haibo Du, School of Electrical Engineering and Automation, Hefei University of Technology, 230009 Hefei, China.

Email: [email protected]

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Guanghui Wen

Guanghui Wen

Department of Mathematics, Southeast University, Nanjing, China

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Wenwu Zhu

Wenwu Zhu

School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, China

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First published: 15 December 2017
Citations: 70

Summary

The finite-time formation control for multiple nonholonomic wheeled mobile robots with a leader-following structure is studied. Different from the existing results, the considered mobile robot has the following features: (i) a higher-order dynamic model, (ii) the robot's velocities cannot be measured, and (iii) there are external disturbances. To solve the problem, a finite-time consensus formation control algorithm via output feedback is explicitly given. At the first step, some finite-time convergent observers are skillfully constructed to estimate both the unknown velocity information and the disturbance in finite time by imposing certain assumptions on the disturbances. Then, on the basis of the integral sliding-mode control method, a disturbance observer-based finite-time output feedback controller is developed. Rigorous proof shows that the finite-time formation can be achieved in finite time. An example is finally given to verify the efficiency of the proposed method.

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