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Research on Software Fault-Tolerance of COTS Microprocessor

Author: ZhaoXianFeng
Tutor: WuXiangHu
School: Harbin Institute of Technology
Course: Computer Science and Technology
Keywords: COTS SIHFT Architecture SPARC V8 ARM7 TDMI
CLC: V443
Type: Master's thesis
Year: 2007
Downloads: 194
Quote: 1
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Abstract


American ARGOS satellite use of SIHFT software fault-tolerant technology radiation resistance of the fault-tolerant commercial devices conducted on-orbit experiments, the results show that in case of the need for dedicated hardware and software technology to achieve the reliability requirements for space applications. This conclusion provides strong support for the use of commercial devices in the spacecraft, making commercial devices have broad application prospects in the spacecraft. Screened out from the many excellent commercial devices suitable devices for spacecraft, space systems development has become one of the main research directions. Microprocessor is the essential core components of the spacecraft, it is necessary to study of the current mainstream aerospace COTS microprocessor architecture, the effect of its use of fault-tolerant software fault-tolerant technology and performance overhead of a comparative analysis, to explore more aerospace microprocessor architecture for software fault tolerance, this future aerospace microprocessor optional very important practical significance. Firstly SIHFT two key technologies: software instruction error detection signature control flow error detection technology and copy the basic idea and algorithm technology; Secondly, both ARM7 and SPARC V8 microprocessor architecture and instruction set; For then on the basis of the above research, carried out on the effect of fault tolerance and performance overhead of SIHFT technology in both microprocessor architecture comparison and theoretical analysis, microprocessor suitable for use of the technology for software fault tolerance should have the condition, of and SIHFT SPARC V8 platforms to achieve critical problem analysis, problem-solving algorithm and corresponding technical solutions. Finally, through the simulation experiment to test the error detection coverage of software error detection techniques suitable for the target platform. The results of experiments conducted in the emulator TSIM data show that: on the basis of introducing an average of 133.2% in the performance overhead register inject faults, error detection coverage is 95.3%; memory inject faults, error detection coverage of 79.8%, which shows SIHFT technology is feasible and effective. ARM7-based experimental data is not yet complete, with which temporarily unable quantitative comparison, the results can be seen from the theoretical analysis to achieve SIHFT technology, SPARC V8 showed performance to be significantly better than ARM7-. This conclusion needs further experimental verification.

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Space instrument,spacecraft devices,spacecraft guidance and control > Electronic equipment
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