Decentralized Fault Tolerant Control for a Class of Interconnected Nonlinear Systems

Area of Science:

• Control Systems Engineering
• Nonlinear Systems Analysis
• Networked Systems

Background:

• Interconnected nonlinear systems are susceptible to component failures.
• Existing fault-tolerant control methods often require extensive state information exchange.
• Managing coupling effects in decentralized systems presents significant challenges.

Purpose of the Study:

• To develop a decentralized fault-tolerant control methodology for interconnected nonlinear systems.
• To enable fault tolerance without requiring inter-subsystem state information exchange.
• To address the impact of coupling effects in such systems.

Main Methods:

• A decentralized fault-tolerant control approach is proposed.
• The cyclic-small-gain methodology is employed to handle coupling effects.
• The method avoids the need for direct state information exchange between subsystems.

Main Results:

• The proposed methodology achieves fault tolerance in decentralized nonlinear systems.
• Effective management of coupling effects is demonstrated.
• Simulation results validate the approach's efficacy.

Conclusions:

• Decentralized fault-tolerant control is achievable without state information exchange.
• The cyclic-small-gain approach provides a viable solution for managing coupling effects.
• The proposed method offers a robust and efficient strategy for fault tolerance in complex systems.