Fault-Tolerant Control of Linear Quantum Stochastic Systems
For quantum control engineers, this work addresses the problem of maintaining system stability and performance under faults, but it is an incremental extension of classical fault-tolerant control to a specific quantum system class.
This paper proposes an estimator-based fault-tolerant control method for linear quantum stochastic systems with fault signals, demonstrating the approach through numerical simulations.
In quantum engineering, faults may occur in a quantum control system, which will cause the quantum control system unstable or deteriorate other relevant performance of the system. This note presents an estimator-based fault-tolerant control design approach for a class of linear quantum stochastic systems subject to fault signals. In this approach, the fault signals and some commutative components of the quantum system observables are estimated, and a fault-tolerant controller is designed to compensate the effect of the fault signals. Numerical procedures are developed for controller design and an example is presented to demonstrate the proposed design approach.