Three-redundancy computer synchronizing method

A computer, three-redundancy technology, applied in the direction of computer, digital computer parts, computing, etc., can solve the problems of redundant system state difference, clock redundancy asynchronous, software asynchronous, etc., to improve system reliability and degrade The effect of development cost and multi-market share

Inactive Publication Date: 2017-10-10
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Description
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  • Application Information

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Problems solved by technology

[0005] The current redundant computer has the problem of clock redundancy out of synchronization and software out of synchronization. In a system with high real-time control cycle requirements, fast fault dia

Method used

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  • Three-redundancy computer synchronizing method
  • Three-redundancy computer synchronizing method
  • Three-redundancy computer synchronizing method

Examples

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Example Embodiment

[0040] According to Figure 1~Figure 8 , A detailed description of the preferred embodiment of the present invention.

[0041] Such as figure 1 As shown, the three-redundant computer includes: a voting module 4, and a first CPU module 1, a second CPU module 2 and a third CPU module 3 with identical structures.

[0042] The voting module 4 includes three redundant voting units with the same structure and independent of each other, namely: the first voting unit 5, the second voting unit 6 and the third voting unit 7. The first voting unit 5 sends a first synchronization pulse signal to the first CPU module 1, the second CPU module 2 and the third CPU module 3, and the second voting unit 6 sends a second synchronization pulse signal to the first The CPU module 1, the second CPU module 2 and the third CPU module 3, the third voting unit 7 sends the third synchronization pulse signal to the first CPU module 1, the second CPU module 2 and the third CPU module 3, the first CPU module 1....

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Abstract

The invention provides a three-redundancy computer synchronizing method. A three-redundancy computer comprises a voting module, a first CPU module, a second CPU module and a third CPU module. The first CPU module, the second CPU module and the third CPI module have identical structures. The voting module comprises three redundancy voting units which have identical structures and are independent. Each voting unit comprises a high-precision clock source and a voting FPGA. Each CPU module comprises a CPU board FPGA and a processor. The three-redundancy computer achieves clock pulse synchronization according to a time-clock-source dynamic fault diagnosis and switching method, and then the three-redundancy computer achieves synchronization of software time references in the computer according to the same homological clock signal. The problems about redundancy computer clock redundancy and software synchronization can be solved, and the method is low in cost, high in reliability, simple and easy to carry out.

Description

technical field [0001] The invention relates to a launch vehicle and a spacecraft computer system, in particular to a three-redundancy computer synchronization method. Background technique [0002] Due to the unique advantages of redundant computers in high reliability and low cost, in the future, various types of upper stages, fast-response small liquid rockets, small solid vehicles, small air-launched vehicles and heavy vehicles for manned lunar exploration The rocket will have a wide range of applications. [0003] With the development of my country's space applications, scientific exploration, and manned spaceflight, and the deepening of international commercial launches and international cooperation, there are more and more launch missions for launch vehicles, and high-density and rapid launches have become the development trend of launch vehicles. In order to improve the overall level and capability of China's launch vehicles, meet the needs of aerospace development i...

Claims

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Application Information

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IPC IPC(8): G06F15/173G06F1/04
CPCG06F1/04G06F15/17325
Inventor 程亮余薛浩桂亮粱珣杨孔进
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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