Fault Detection for Nonlinear Networked Control Systems With Sensor Saturation and Random Faults

Abstract

A fault detection filter is designed for a class of nonlinear networked control systems with sensor saturation, random packet loss and delay, a unified model is constructed to describe the transmission delay caused by packet loss and network induction. By constructing Lyapunov function and using the convex optimization algorithm, a parameter matrix of the H∞ fault detection filter is obtained by solving a series of linear matrix inequalities, which guarantees that the error system satisfies a concerned performance index. Finally, the validity of the proposed method is illustrated by a numerical example on the internet-based three-tank system.

Keywords

• Fault detection
• nonlinear networked control systems
• packet losses
• random occurring faults
• sensor saturation
• time-delays