Design and Implementation of Multi-source Redundant Fault-tolerant Navigation Computing System
The conventional UAV occupies too many computing resources of the flight control computer in the signal processing,redundancy management,fault detection and isolation of the redundancy configura-tion sensor,which increases the overall load of the flight control computer and reduces the reliability of the whole system.At the same time,the traditional sensor redundancy configuration scheme and navigation computer redundancy design have limitations such as incomplete scheme and poor real-time performance in engineering.In view of this,this paper proposes a solution of multi-source redundant fault-tolerant navigation computing system,and gives the software/hardware design method of the system.Based on the non-similar redundancy technology,the hardware and software filtering algorithms of multi-source redun-dant sensors are designed.The dual CPU+FPGA architecture is used to design the hardware platform and modular software architecture of multi-source redundant fault-tolerant navigation computer,and the software and hardware development of the system is realized.Through the actual test and test,it is verified that the system has the characteristics of fast communication rate,high reliability and good stability,and meets the requirements of the high reliability flight control system for the new combined inertial naviga-tion.
万方数据
维普
