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Embedded satellite-borne fault-tolerant temperature control system and verification method thereof

A temperature control system and temperature control technology, applied in intelligent control and embedded computer information processing, aerospace fields, can solve the problems of computer software and hardware failure, high cost of equipment failure, and high cost of spacecraft system equipment. The effect of reducing test time and cost, reliable data transmission, and simple and reliable method

Inactive Publication Date: 2010-09-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the long operating time in orbit, the spaceborne temperature control system is often subject to many interference factors such as space particle radiation, and the resulting failures will cause the software and hardware of the computer to fail.
Therefore, in order to achieve high reliability and high security, measures such as redundancy and fault tolerance need to be applied in the system. The correctness verification of the fault tolerance mechanism and design scheme has become an important link in the development of the onboard temperature control system. The failure rate is extremely low, and the failure time and process are difficult to predict. In addition, the cost of spacecraft system equipment is expensive, and the cost of equipment failure is high. How to simulate equipment failure in an effective way to verify and evaluate its redundant fault-tolerant mechanism, It has always been a difficult problem in the development process of the on-board temperature control system. According to the literature, there is no example at home and abroad of which fault injection method is used to verify the redundant fault-tolerant mechanism for the on-board temperature control system. Therefore, it is necessary to develop a low-cost , The simple and easy fault injection method for evaluating the reliability of the spaceborne computer system and its redundant fault-tolerant characteristics is of great significance and practical value

Method used

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  • Embedded satellite-borne fault-tolerant temperature control system and verification method thereof
  • Embedded satellite-borne fault-tolerant temperature control system and verification method thereof
  • Embedded satellite-borne fault-tolerant temperature control system and verification method thereof

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Embodiment

[0138] The verification method provided by the present invention is illustrated with examples.

[0139] Step 1. Initialize file configuration;

[0140] The ground monitoring and fault injection computer 3 configures the initial file configuration of the temperature control system. The RT-RT hot backup mode is selected here. The temperature setting in the cabin is 19-25 degrees Celsius on the sunny side and 23-30 degrees Celsius on the backside, and the setting is 100. Heater 1 fault occurs in seconds, and sensor 1 data offset fault occurs in the 105th second. After generating the configuration file, wait for the on-board temperature control system 2 computer to connect and extract.

[0141] Step two, system initialization;

[0142] After the main and standby machines of the on-board temperature control system 2 are started, they connect and log in to the ground monitoring and fault injection computer 3 in the form of clients respectively, obtain configuration files, initializ...

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Abstract

The invention discloses an embedded satellite-borne fault-tolerant temperature control system and a verification method thereof. The system comprises a satellite management computer, an on-satellite temperature control system and a ground monitoring and fault injection computer; the on-satellite temperature control system comprises a temperature control calculation host machine, a temperature control calculation standby machine and an environmental simulation computer; and the temperature control calculation host machine and the temperature control calculation standby machine are temperature control computers. The verification method comprises the following steps of: 1, initializing a file allocation; 2, initializing the system; 3, beginning simulation; 4, injecting and executing a fault; 5, processing redundant fault tolerance; 6, monitoring the ground and evaluating the fault; and 7, evaluating a fault model and a redundancy strategy of the temperature control system. The fault injection and the verification process of the whole running stage of the real satellite-borne temperature control system are completely realized; and the method is simple, convenient and reliable, and greatly reduces the test time and expense for the practical system.

Description

technical field [0001] The invention relates to an embedded spaceborne fault-tolerant temperature control system and a verification method thereof, belonging to the fields of aerospace, intelligent control and embedded computer information processing. Background technique [0002] The spaceborne system leaves the atmosphere, under the direct sunlight of strong sunlight, periodically enters the shadow of the earth or the moon, and is often in an environment of extreme cold and heat. If no measures are taken, the temperature will change greatly, which will seriously affect the normal operation of the on-board computer. At present, the spaceborne temperature control system is divided into passive temperature control and active temperature control. They are directly covered on the surface of the satellite (passive), or placed on the internal equipment components and servo systems of the satellite to adjust the flow of heat (active). This patent Involves active temperature contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/24G06F11/00
Inventor 王青杨飞董朝阳解志君
Owner BEIHANG UNIV
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