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浙江大学学报(工学版)
浙江大学学报(工学版)
航空航天技术     
实时高可靠综合电子系统的逻辑架构设计
苏星, 王慧泉, 金仲和
浙江大学 微小卫星研究中心,浙江 杭州,310027
Logical architecture design of integrated electronic system with high real-time and reliability in ZDPS-2 pico-satellite
SU Xing, WANG Hui-quan, JIN Zhong-he
Micro-satellite Research Center, Zhejiang University, Hangzhou, 310027, China
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摘要：

针对ZDPS-2卫星的高实时性要求,设计多路并行独占式DMA,实现CPU与包括载荷在内的所有部件的高效交互：54路外设串行接口通信占用CPU时间由565 ms降低到50 ms,姿控系统传感器数据采集时间一致性由33 ms降低到6 ms.设计数据混编传输机制及链式DMA结构,实现84路载荷数据100 Hz高频采集与实时下传,满足40 ms下传延时要求.通过关键器件抗辐射加固及系统容错机制,提高系统的可靠性.地面测试与在轨运行结果表明：综合电子系统功能正确,稳定可靠,已在轨连续运行5个多月,完成了载荷及各项试验,实时性满足任务需求.
Abstract:
As high-real-time and reliability was required in ZDPS-2, multiple exclusive DMA modules were designed to work in parallel way for effective communication between CPU and all the peripherals by 54 serial interfaces. Experiments show that the time consumption on 54 interfaces between CPU and peripherals is reduced from 565 ms to 50 ms, and the sampling time difference among all sensors of ADCS is reduced from 33 ms to 6 ms. Special frame structure and linkedlist-based DMA modules can meet the real-time requirement of 84 distributed-payloads, the data sampling rate on 84 distributed-payloads reaches 100 Hz, and the transmitting latency to the ground is less than 40 ms. Radiation-hardened and fault-tolerant designs were also applied to improve the reliability. The ground test and on-orbit operation show that the integrated electronic system functions correctly and the system is stable and reliable. The system has been running continuously for more than five months to complete all payload tests. The real-time performance meets the mission requirement well.
出版日期: 2017-03-01
CLC:  V 423.43  
通讯作者: 王慧泉，男，副研究员，博士. ORCID: 0000-0003-4369-6848.      E-mail: hqwang@zju.edu.cn
作者简介: 苏星(1987—)，男，博士，从事皮卫星综合电子系统设计研究. ORCID: 0000-0002-6270-1801. E-mail: iseesuxing@zju.edu.cn
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苏星, 王慧泉, 金仲和. 实时高可靠综合电子系统的逻辑架构设计[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2017.03.027.

SU Xing, WANG Hui-quan, JIN Zhong-he. Logical architecture design of integrated electronic system with high real-time and reliability in ZDPS-2 pico-satellite. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2017.03.027.

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