Three-redundancy computer synchronizing method

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...

AI Technical Summary

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 diagnosis and decision-making cannot be realized. At the same time, due to the out of synchronization problem, there are state differences in the redundant system. , increasing the complexity of fault diagnosis

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