What is Fault-Tolerant Control?

1 Fault-tolerant Systems 11.1. What Is a Fault ?

Any action that does not conform to the given specification of a system is viewed as a fault. Historically, models of failures have been linked with the users level of interaction with a system. A VLSI designer may focus on stuck-at-0 and stuck-at-1 faults only, where the output of a gate is permanently stuck to either a 0 or a 1 regardless of input variations. A system level hardware designer,...

Fault-Tolerant Control of a Nonlinear Process with Input Constraints

A Fault-Tolerant Control (FTC) methodology has been presented for nonlinear processes being imposed by control input constraints. The proposed methodology uses a combination of Feedback Linearization and Model Predictive Control (FLMPC) schemes. The resulting constraints in the transformed process will be dependent on the actual evolving states, making their incorporation in the de...

Fault Tolerant Feedback Control

An architecture for fault tolerant feedback controllers based on the Youla parameterization is suggested. It is shown that the Youla parameterization will give a residual vector directly in connection with the fault diagnosis part of the fault tolerant feedback controller. It turns out that there is a separation between the feedback controller and the fault tolerant part. The closed loop feedba...

Robust Fault-Tolerant Control

Fault Diagnosis and Fault-tolerant Control