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Design and application of solar sailing: A review on key technologies

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Chinese Journal of Aeronautics 2023年第5期36卷 125-144页

作者： pengyuan zhao Chenchen WU Yangmin LI State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of the Chinese Academy of Sciences Beijing 100049China The Hong Kong Polytechnic University Hong Kong 999077China

Solar sail technology has been proposed and developed for space explorations with advantages of low launch cost,no-propellant consumption,and continuous thrust,which has great potentials in earth polar detection,interstellar explorations and *** development of solar sail has made significant progress in structural design,manufacturing,materials,orbit transfer,and stability control in the past few decades,which makes meaningful contributions to astronomy,physics,and aerospace *** breakthroughs of Solar Radiation Pressure(SRP)propulsion and interstellar transfer have been achieved in current solar sail ***,there are still many challenges and problems need to be *** paper attempts to summarize the research schemes and potential applications of solar sailing in space missions from the viewpoint of key technologies,so as to provide an overall perspective for researchers in this *** of the key technologies of solar sailing system design are ***,challenges and prospective development of solar sailing are discussed.

关键词： Deployment mechanism Membrane structures Solar radiation pressure Solar sails Solar sail missions

Survey on research and development of on-orbit active debris removal methods

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Science China(Technological Sciences) 2020年第11期63卷 2188-2210页

作者： zhao pengyuan LIU JinGuo WU ChenChen State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China

Space debris is growing dramatically with the rapid pace of human exploration of space,which seriously threatens the safety of artificial spacecraft in ***,the active debris removal(ADR)is *** review aims to review the ADR methods and to advance related research in the *** current research and development status are clearly demonstrated by mapping knowledge domain and *** this paper,the latest research results are classified and summarized in detail from two aspects of space debris capture and *** scheme comparison and evaluation of all ADR methods are performed,and the applicable scopes of various methods are *** ADR method is scored using a cobweb evaluation model based on six *** development of ADR is discussed to promote further research interest.

关键词： space debris active debris removal on-orbit servicing space robotics capture method

A flat-foldable equiangular spiral folding pattern inspired by sunflowers for deployable structures

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Chinese Journal of Aeronautics 2024年第6期37卷 425-438页

作者： Shuangqing YU Jinguo LIU pengyuan zhao Yingying TANG State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China

Flasher origami pattern has been widely utilized to improve the stowage efficiency of deployable ***,flasher origami cannot be folded fully flat,and they still have great potential for optimization in terms of storage volume and folding *** this paper,a flat foldable equiangular spiral folding pattern inspired by the sunflower disk is ***,a parametric design method for this equiangular spiral crease diagram is introduced in ***,a kinematic model of the equiangular spiral folding pattern is established based on the kinematic equivalence between rigid origami and spherical linkages.A simulation of the developed model demonstrates that the equiangular spiral folding pattern can be folded *** the folded ratio as an evaluation index,the calculated results and experiments show that the equiangular spiral crease pattern can yield fewer creases and improve stowage efficiency in comparison to flasher origami *** spiral folding pattern can save a considerable amount of space and provide a new approach to spatially deployable structures.

关键词： Flasher origami Sunflower-inspired Deployable structures Flat-foldability Equiangular spiral folding pattern

SIV:A Structural Integrity Verification Approach of Cloud Components with Enhanced Privacy

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Tsinghua Science and Technology 2019年第5期24卷 557-574页

作者： Bo zhao Peiru Fan pengyuan zhao Mingtao Ni Jinhui Liu School of Cyber Scienee and Engineering. Wuhan University Wuhan 430072 China. School of Computer Science Shaanxi Normal University Xi'an 710062 China

Private data leakage is a threat to current integrity verification schemes of cloud components. To address this issue, this work proposes a privacy-enhancing Structural Integrity Verification (SIV) approach. It is made up of three processes: proof organization, proof transformation, and integrity judgement. By introducing a Merkle tree technique, the integrity of a constituent part of a cloud component on a node is represented by a root value. The value is then masked to cipher texts in proof transformation. With the masked proofs, a structural feature is extracted and validated in an integrity judgement by a third-party verification provider. The integrity of the cloud component is visually displayed in the output result matrix. If there are abnormities, the corrupted constituent parts can be located. Integrity is verified through the encrypted masked proofs. All raw proofs containing sensitive information stay on their original nodes, thus minimizing the attack surface of the proof data, and eliminating the risk of leaking private data at the source. Although some computations are added, the experimental results show that the time overhead is within acceptable bounds.

关键词： integrity verification cloud components structural feature privacy

Dynamic Analysis and Parametric Optimization of Telescopic Tubular Mast Applied on Solar Sail

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Chinese Journal of Mechanical Engineering 2023年第2期36卷 279-290页

作者： Chenyang Ji Jinguo Liu Chenchen Wu pengyuan zhao Keli Chen State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of ScienceShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China University of Chinese Academy of Sciences Beijing 100049China

Large-scale solar sails can provide power to spacecraft for deep space exploration.A new type of telescopic tubular mast(TTM)driven by a bistable carbon fiber-reinforced polymer tube was designed in this study to solve the problem of contact between the sail membrane and the spacecraft under light *** with the traditional TTM,it has a small size,light weight,high extension ratio,and simple *** anti-blossoming and self-unlocking structure of the proposed TTM was *** aimed to simplify the TTM with a complex structure into a beam model with equal linear mass density,and the simulation results showed good *** dynamic equation was derived based on the equivalent model,and the effects of different factors on the vibration characteristics of the TTM were *** performance parameters were optimized based on a multiobjective genetic algorithm,and prototype production and load experiments were *** results show that the advantages of the new TTM can complete the deployment of large-scale solar sails,which is valuable for future deep space exploration.

关键词： Telescopic tubular mast Solar sail Genetic algorithm Modal analysis Optimization

A Survey: Typical Security Issues of Software-Defined Networking

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China Communications 2019年第7期16卷 13-31页

作者： Yifan Liu Bo zhao pengyuan zhao Peiru Fan Hui Liu Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of Education School of Cyber Science and Engineering Wuhan University Wuhan 430072 China School of Cyber Security and Computer Hebei University Baoding 071002 China

Software-Defined Networking (SDN) has been a hot topic for future network development, which implements the different layers of control plane and data plane respectively. Despite providing high openness and programmability, the “three-layer two-interface” architecture of SDN changes the traditional network and increases the network attack nodes, which results in new security issues. In this paper, we firstly introduced the background, architecture and working process of SDN. Secondly, we summarized and analyzed the typical security issues from north to south: application layer, northbound interface, control layer, southbound interface and data layer. Another contribution is to review and analyze the existing solutions and latest research progress of each layer, mainly including: authorized authentication module, application isolation, DoS/DDoS defense, multi-controller deployment and flow rule consistency detection. Finally, a conclusion about the future works of SDN security and an idealized global security architecture is proposed.

关键词： software-defined networking network security global security security threat

Novel Surface Design of Deployable Reflector Antenna Based on Polar Scissor Structures

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Chinese Journal of Mechanical Engineering 2020年第5期33卷 4-18页

作者： pengyuan zhao Jinguo Liu Chenchen Wu Yangmin Li Keli Chen State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of ScienceShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China Department of Industrial and Systems Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

Space-deployable mechanisms can be used as supporting structures for large-diameter antennas in space *** study proposes a novel method for constructing the surface design of space reflector antennas based on polar scissor *** concurrency and deployability equations of the space scissor unit with definite surface constraints are derived using the rod and vector *** equations of the spatial transformation for space n-edge polar scissor units are summarized.A new closed-loop deployable structure,called the polar scissor deployable antenna(PSDA),is designed by combining planar polar scissor units with spatial polar scissor *** overconstrained problem is solved by releasing the curve constraint that locates at the end-point of the planar scissor *** simulation and error analysis are *** results show that the PSDA can effectively fit the paraboloid of ***,deployment experiments verify the validity and feasibility of the proposed design method,which provides a new idea for the construction of large space-reflector antennas.

关键词： Deployable structures Polar scissor unit Reflector antenna Surface design

Asymmetric Intramolecular Hydroalkoxylation of Unactivated Alkenes Catalyzed by Chiral N-Triflyl Phosphoramide and TiCl4

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Chinese Journal of Chemistry 2020年第6期38卷 565-569页

作者： pengyuan zhao Aolin Cheng Xinxu Wang Jiguo Ma Guoqing zhao Yingkun Li Yi Zhang Baoguo zhao The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Normal UniversityShanghai 200234China

By using a combination of a chiral/V-triflyl phosphoramide and TiCl4 as the catalyst,a new process for asymmetric intramolecular hydroalkoxylation of unactivated alkenes was developed,producing various chiral tetrahyd... 详细信息

关键词： chiral Chiral intramolecular

1U-Sized Deployable Space Manipulator for Future On-Orbit Servicing,Assembly,and Manufacturing

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Space(Science & Technology) 2022年第1期2022卷 500-513页

作者： Jinguo Liu pengyuan zhao Keli Chen Xin Zhang Xiang Zhang State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China National Innovation Institute of Defense Technology Academy of Military SciencesBeijingChina

Miniaturized,multifunctional,and economical on-orbit service satellites have been increasingly used with the continuous increase of space exploration *** this paper,an innovative deployable manipulator is designed,named Cubot,which can be stowed in 1 U-sized(10 cm×10 cm×10 cm)*** CubeSat as the carrier,the deployable Cubot aims to achieve a variety of on-orbit operation tasks including space debris removal and space station on-orbit maintenance,for future on-orbit servicing,assembly,and manufacturing(OSAM).A kinematics modeling method of a space manipulator with passive joints is proposed,and the motion equation of the manipulator is *** the elastic potential energy stored in the passive joint during deployment,the momentum change of Cubot is simulated and *** the main forced element,the end effector is analyzed using *** stress response with respect to the force distribution and the clamping angle is analyzed to evaluate mechanical performances of the end-effector *** tests are conducted to verify the feasibility of Cubot based on a principled prototype,which aims to provide engineering and practical experience for the development of this field.

关键词： passive sized Cube