A Microprocessor-Based Hybrid Duplex Fault-Tolerant System


1 Electerical Engineering, The University of Calgaty

2 Department of Electrical and Computer Engineering, University of Calgary


Reliability is one of the fundamental considerations in the design of industrial control equipment. The microprocessor-based Hybrid Duplex fault-tolerant System (HDS) proposed in this paper has high reliability to meet this demand although its hardware structure is simple. The hardware configuration of HDS and the fault tolerance of this system are described. The switching control strategies in HDS are studied in detail. The disputes between two modules are avoided. The reliability estimation methods are also given.