双机容错系统中基于FPGA容错控制器的设计

根据双机容错系统故障检测和诊断、仲裁技术的常用方案及特点,结合某在研双机容错系统,提出了一种基于FPGA容错控制器的设计方案.仲裁模块作为容错控制器的核心模块,可根据双机工作的监测信号负责完成主备机切换功能.为了实现软硬件心跳故障监控功能,在FPGA内嵌了WTD模块.同时,全局时钟引用于各个模块后,良好消除了输出信号的毛刺问题.实验结果表明, 该设计方案满足系统要求,可靠性较好.

Design of the Fault_tolerant Controller Based on FPGA in the Dual Fault-tolerant System

According to various methods in common use of dual fault-tolerant system and combined with a developing devices,a scheme of the dual fault_tolerant controller is proposed based on FPGA .As the core module of the fault_tolerant controller,the arbitrator mechanism is in charge of achieving the switches between the host and the backup machine. Watchdog is designed in FPGA for inpecting heartbeat of sofeware and hardware . And also high eliminating the output signals' burrs by using FPGA's inner clock signal. T...