Volume 31, Issue 18 pp. 9483-9500
RESEARCH ARTICLE

Fault tolerant consensus of multiple nonholonomic chained-form systems with actuator and communication faults

Zejun Zhang

Zejun Zhang

College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China

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Hao Yang

Corresponding Author

Hao Yang

College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China

Correspondence Hao Yang, College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, No.29, Jiangjun Avenue, Nanjing, Jiangsu, China.

Email: [email protected]

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Bin Jiang

Bin Jiang

College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China

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First published: 21 September 2021
Citations: 2

Funding information: Central University Basic Research Fund of China, NZ2020003; Higher Education Discipline Innovation Project, B20007; National Natural Science Foundation of China, 61773201; 62073165

Abstract

This article investigates the fault tolerant consensus problem of multiple nonholonomic chained-form systems with both actuator and communication faults. The systems are enabled to follow a reference trajectory and realize practical consensus, by applying distributed reference state observers and robust adaptive fault tolerant control (FTC) strategies. The proposed state observers are robust to communication faults and can estimate the actual reference trajectory for each system. Based on such an observer, a robust adaptive FTC scheme is further provided to address actuator faults. A sine function is injected into the FTC law to relax the persistent excitation condition to avoid uncontrollability of the two-input chained-form system when one of reference control input tends to zero. Simulation result of wheeled mobile robots shows the effectiveness of proposed FTC methods.

CONFLICT OF INTEREST

The authors declared that they have no conflicts of interest to this work.

DATA AVAILABILITY STATEMENT

The data that supports the findings of this study are available in Section 5 of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.