Abstract
Aiming at the requirements of high reliability and high real time for aerospace measurement and control systems, a solution based on Compact PCI (CPCI) bus for hot-redundancy of hardware structure is proposed. And an advanced fault diagnosis method for checking the faults of cards based on the probabilistic neural networks (PNN) is used in this system. A set of hot-redundancy experimental system platforms are developed to perform experimental verification on device-level hot-redundancy technology. Simulation and experiment results show that the system can realize hot-redundancy.