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Front. Inform. Technol. Electron. Eng.  2012, Vol. 13 Issue (2): 83-89    DOI: 10.1631/jzus.C1100079
    
Design and implementation of the highly-reliable, low-cost housekeeping system in the ZDPS-1A pico-satellite
Yu Zhang, Yang-ming Zheng, Mu Yang, Hui Li, Zhong-he Jin
College of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
Design and implementation of the highly-reliable, low-cost housekeeping system in the ZDPS-1A pico-satellite
Yu Zhang, Yang-ming Zheng, Mu Yang, Hui Li, Zhong-he Jin
College of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
 全文: PDF 
摘要： The ZDPS-1A pico-satellite designed in Zhejiang University with a mass of 3.5 kg and a power consumption of less than 3.5 W is the smallest satellite in China up to now. The housekeeping system (HKS) is the core part of ZDPS-1A. The reliability of HKS has an important influence on the safety of the satellite. Traditional fault-tolerant methods do not apply to ZDPS-1A due to such pico-satellite characteristics as light weight, compactness in size, energy saving, and high integration. This paper deals with a highly-reliable, low-cost design for HKS using industrial devices. The reliable strategies of HKS include a dual modular redundancy scheme, CPU warm backup, a static triple modular redundancy scheme, and two-level watchdogs. Recursive experiments, special tests, and environmental tests show that this system meets the design target. This design has already been applied to ZDPS-1A, which was launched to execute in-orbit tasks on Sept. 22, 2010. To date, the satellite has been in a proper state for more than 15 months.
关键词： ZDPS-1A;  Pico-satellite;  Reliability;  Housekeeping system (HKS);  On-board computer (OBC);  Warm backup;  Fault tolerance    
Abstract: The ZDPS-1A pico-satellite designed in Zhejiang University with a mass of 3.5 kg and a power consumption of less than 3.5 W is the smallest satellite in China up to now. The housekeeping system (HKS) is the core part of ZDPS-1A. The reliability of HKS has an important influence on the safety of the satellite. Traditional fault-tolerant methods do not apply to ZDPS-1A due to such pico-satellite characteristics as light weight, compactness in size, energy saving, and high integration. This paper deals with a highly-reliable, low-cost design for HKS using industrial devices. The reliable strategies of HKS include a dual modular redundancy scheme, CPU warm backup, a static triple modular redundancy scheme, and two-level watchdogs. Recursive experiments, special tests, and environmental tests show that this system meets the design target. This design has already been applied to ZDPS-1A, which was launched to execute in-orbit tasks on Sept. 22, 2010. To date, the satellite has been in a proper state for more than 15 months.
Key words: ZDPS-1A    Pico-satellite    Reliability    Housekeeping system (HKS)    On-board computer (OBC)    Warm backup    Fault tolerance
收稿日期: 2011-03-31 出版日期: 2012-01-19
CLC:  TP39  
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Yu Zhang
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Yu Zhang, Yang-ming Zheng, Mu Yang, Hui Li, Zhong-he Jin. Design and implementation of the highly-reliable, low-cost housekeeping system in the ZDPS-1A pico-satellite. Front. Inform. Technol. Electron. Eng., 2012, 13(2): 83-89.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C1100079    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2012/V13/I2/83

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