组合导航计算机容错技术研究

Research on Fault-Tolerance Technology in Integrated Navigation Computer

基于SINS/CNS/GNSS组合导航计算机,提出了一种容错设计的组合导航计算机。首先,介绍了组合导航计算机容错设计的主要目的和设计思路,提出了容错组合导航计算机结构原理;其次,基于硬件元件功耗不同,设计了不同的硬件容错方法;然后,在硬件容错方法基础上设计了N版本程序方法和恢复块方法,实现了软件容错;最后,从导航源利用情况和组合导航计算机可用性两个方面对设计的容错导航计算机和传统导航计算机进行比较。实际应用结果表明,相对于传统导航计算机,设计的容错组合导航计算机可以有效检测隔离故障,提高组合导航计算机的可靠性和可用性。

Based on the SINS/CNS/GNSS integrated navigation computer, this paper proposes a fault-tolerant integrated navigation computer. First, this paper introduces the main purpose and design thought of the fault-tolerant integrated navigation computer ,and proposes the structured flowchart of the fault-tolerant integrated navigation computer. Secondly, based on the different power consumption of hardware components, this paper designs different hardware fault-tolerance method .Thirdly , based on hardware fanlt-tolerance, this paper designs the N-version programming method and recovery-block method to realize the software fault-tolerance .Finally, this paper compares the fault-tolerant navigation computer with the traditional navigation computer from two aspects： the utilization of navigation source and the availability of navigation computer. Compared with the traditional navigation computer, the practical application results show that the fault-tolerant navigation computer can effectively monitor and isolate the fault and improve reliability and availability of the integrated navigation computer.