| 1 | Architecture design for reliable and reconfigurable FPGA-based GNC computer for deep space exploration显示文摘SRAM(static random access memory)-based FPGA(field programmable gate array), owing to its large capacity, high performance, and dynamical reconfiguration, has become an attractive platform for So PC(system on programmable chip) development. However, as the configuration memory and logic memory of the SRAM-based FPGA are highly susceptible to SEUs(single-event upsets) in deep space, it is a challenge to design and implement a highly reliable FPGA-based system for spacecraft, and no practical architecture has been proposed. In this paper, a new architecture for a reliable and reconfigurable FPGAbased computer in a highly critical GNC(guidance navigation and control) system is proposed. To mitigate the effect of an SEU on the system, multi-layer reconfiguration and multi-layer TMR(triple module redundancy) techniques are proposed, with a reliable reconfigurable real-time operating system(Space OS) managing the system level fault tolerance of the computer in the architecture. The proposed architecture for the reconfigurable FPGA-based computer has been implemented with COTS(commercial off the shelf) FPGA and has firstly been applied to the GNC system of a circumlunar return and reentry flight vehicle. The in-orbit results show that the proposed architecture is capable of meeting the requirements of high reliability and high availability, and can provide the expressive varying functionality and runtime flexibility for an FPGA-based GNC computer in deep space. | YANG MengFei LIU Bo GONG Jian LIU HongJin HU HongKai DONG YangYang SHI Lei ZHAO YunFu MIAO ZhiFu | 2016 | Science China(Technological Sciences)2016，59，2： | 10 |
| 5 | Development and commercial application of Baosteel sintering flue gas recirculating process显示文摘Because of the low temperature,large waste gas volume,high pollutant content,and complicated compositions,waste heat recovery and emission gas treatment of sintering flue gas have always presented a challenge in the steel industry,and this issue has attracted widespread attention both locally and abroad. Recently,based on the first domestic pilot plant and demonstration project,Baosteel has performed a series of innovative research and development investigations on its sintering flue gas recirculating( SFGR) process,in which the system design and optimization,dioxin-related contaminant source suppression,ore matching structure optimization,wear-resistant design of cycling fans and pipelines,high-efficiency dust removal equipment,system control and stable operation strategy,flue gas mixing and switching control,circular hood sealing,oxygen content conditioning,recirculation sintering system process control,and model development have been studied,and a complete set of equipment and technology for the SFGR process has been initially developed. The investigation results suggest that the SFGR process can not only significantly reduce exhaust gas volume and pollutant emissions but also recover low-temperature waste heat and reduce the energy consumption of sintering; therefore,the overall technologies possess great value in energy savings,pollution emission reduction,and sintering ore quality / yield improvement. | CUI Jian LI Xianwei SHI Lei DU Hongjin JIA Xiufeng XI Saifeng YU Bo WANG Ruyi YU Yongmei JIN Chun YANG Yun | 2014 | Baosteel Technical Research2014，8，4： | 0 |
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