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3rd International Conference on Frontiers of Electronics, Information and Computation Technologies, ICFEICT 2023

作者： Zhang, Ying Zhao, Qian Jiang, Chongwu Wang, Shihui Tao, Yizhu Beijing Aerospace Automatic Control Institute National Key Laboratory of Science and Technology on Aerospace Intelligent Beijing100854 China Yuying Education Group Yuying School Beijing100018 China

ISBN: (纸本)9798350302356

Multi-FPGA with the cascade structure is widely used, which urgently needs the low power loading fuction in the long term working stage. For the same size configuration file, choosing different configuration modes, the configuration circuit design and configuration time could be very different. To analyse the effects for the Multi-FPGA structures, the typical model is researched respectively on master serial (MS), slave serial (SS), slave parallel (SP), active parallel (AP), master parallel (MP), fast SPI, standard SPI and JTAG configuration. And it is demonstrated on the management design of multi-FPGA cascade loading, including factors to be considered, when choosing a configuration mode with overall setup, speed, cost, program upgrade complexity, and applications. Among them, to lower the power, even though the JTAG cascade mode has fast loading speed, the product still needs to be equipped with peripheral devices, such as emulators when upgrading, which is inconvenient to use;the MCU loading mode has slow loading speed, complex overall settings and low cost, and requires a remote computer and network to backup the upgrading;the flash loading mode with fast loading speed, complex overall setting and high cost, supports both remote and local upgrade modes. With all these setting to get the lowest power consumption, the specified type for the MultiFPGA simulation with the cascade structure can only take 2.7 s to load, with the33 MHz clock. © 2023 IEEE.

关键词： Electric power utilization

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Monitoring Design of Multi-cache Parallel Acquisition System 3

Monitoring Design of Multi-cache Parallel Acquisition System

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3rd International Conference on Frontiers of Electronics, Information and Computation Technologies, ICFEICT 2023

作者： Zhang, Ying Zhao, Qian Jiang, Chongwu Tao, Yizhu Wang, Shihui Beijing Aerospace Automatic Control Institute National Key Laboratory of Science and Technology on Aerospace Intelligent Beijing100854 China Yuying School Yuying Education Group Beijing100018 China

ISBN: (纸本)9798350302356

This paper uses parallel acquisition technology to complete the monitoring task of the system, and at the same time, the line measurement technology is not only limited to the parallel acquisition of multiple signals, but also includes the use of a platform with parallel computing functions to process the collected data in parallel, which greatly improves the real-time performance and processing efficiency of the data acquisition system. In addition to the parallel acquisition and parallel processing of analog signals, it also realizes the ability to test in parallel for a variety of communication interfaces, which can test a variety of different types of interfaces at the same time, which greatly increases the test ability and improves the test efficiency of the system. © 2023 IEEE.

关键词： Electric power utilization

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End-to-end Mars entry,descent,and landing modeling and simulations for Tianwen-1 guidance,navigation,and control system

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Astrodynamics 2022年第1期6卷 53-67页

作者： Chao Xu Xiangyu Huang Minwen Guo Maodeng Li Jinchang Hu Xiaolei Wang Beijing Institute of Control Engineering Beijing 100094China National Key Laboratory of Science and Technology on Space Intelligent Control Beijing 100094China

On May 15,2021,the Tianwen-1 lander successfully touched down on the surface of *** ensure the success of the landing mission,an end-to-end Mars entry,descent,and landing(EDL)simulator is developed to assess the guidance,navigation,and control(GNC)system performance,and determine the critical operation and lander *** high-fidelity models of the Mars atmosphere,parachute,and lander system that are incorporated into the simulator are *** the developed simulator,simulations of the Tianwen-1 lander EDL are *** results indicate that the simulator is valid,and the GNC system of the Tianwen-1 lander exhibits excellent performance.

关键词： Mars entry,descent,and landing(EDL) modeling and simulation Tianwen-1 lander guidance,navigation,and control(GNC)

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Entry vehicle control system design for the Tianwen-1 mission

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Astrodynamics 2022年第1期6卷 27-37页

作者： Jinchang Hu Xiangyu Huang Maodeng Li Minwen Guo Chao Xu Yu Zhao Wangwang Liu Xiaolei Wang Beijing Institute of Control Engineering Beijing 100094China National Key Laboratory of Science and Technology on Space Intelligent Control Beijing 100094China

The entry vehicle for the Tianwen-1 mission successfully landed on the surface of Mars at 7:18 AM BJT on May 15,*** successful landing made China the first country to orbit,land,and release a rover in their first attempt at the Mars *** guidance,navigation,and control(GNC)system plays a crucial role in the entry,descent,and landing(EDL)*** study focused on the attitude control component of the GNC system *** EDL phase can be divided into several sub-phases,namely the angle of attack control phase,lift control phase,parachute descent phase,and powered descent *** sub-phase has unique attitude control requirements and *** paper introduces the key aspects of designing attitude controllers for each ***,flight results are presented and analyzed.

关键词： Tianwen-1 Mars landing attitude control robust control fault diagnosis

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A kind of multiwavelength erbium-doped fiber laser based on Lyot filter

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Chinese Physics B 2023年第3期32卷 252-257页

作者：周哲海吴婧仪闵昆龙赵爽李慧宇 Beijing Laboratory of Optical Fiber Sensing and System Beijing Information Science&Technology UniversityBeijing 100192China Beijing Aerospace Measurement&Control Technology Co. Ltd.Beijing 100041China

A multiwavelength tunable ring-cavity erbium-doped fiber laser(EDFL)based on a Lyot filter was *** the proposed Lyot filter,a comb filter consisting of an EDF-polarization-maintaining fiber(EDF-PMF),a polarization controller(PC),and a circulator with four ports was used to suppress the mode *** light transmission direction was guaranteed by the *** the proposed fiber laser,tunable single,dual,triple,quadruple,quintuple,sextuple,and septuple wavelengths were realized.A single-wavelength laser output with an optical signal-to-noise ratio(SNR)of up to30.56 dB was realized,and a tuning range of 1590.54 nm to 1599.54 nm was achieved by tuning the *** stability of the single,dual,triple,and quadruple-wavelength center power fluctuations was less than 0.05 dB,0.98 dB,5.07 dB,and7.71 dB *** the laser was operated in the multiwavelength condition,the SNR was more than 20.97 *** proposed erbium-doped fiber laser is suitable for fiber-sensing system applications.

关键词： multiwavelength erbium-doped fiber laser Lyot filter polarization-maintaining fiber circulator

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Review of Formation control and Cooperative Guidance technology of Multiple Unmanned Aerial Vehicles

Review of Formation Control and Cooperative Guidance Technol...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Liu, Xinyu Hao, Mingrui Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (纸本)9789811966125

Aiming at the research status of formation control and cooperative guidance technology of multi unmanned aircrafts, this paper introduces various methods of formation control technology and cooperative guidance technology. It also expounds the characteristics of formation control methods such as graph theory, leader-follower formation, behavior strategy, virtual structure, artificial potential field mode and consistency mode, as well as independent, centralized and distributed cooperative guidance methods. Then the application status and technical development of intelligent methods in multi vehicles formation control and cooperative guidance are introduced. At the same time, this paper compares the advantages and problems of various methods, and prospects the future development direction of this field. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Graph theory

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Adaptive entry guidance for the Tianwen-1 mission

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Astrodynamics 2022年第1期6卷 17-26页

作者： Minwen Guo Xiangyu Huang Maodeng Li Jinchang Hu Chao Xu Beijing Institute of Control Engineering Beijing 100094China National Key Laboratory of Science and Technology on Space Intelligent Control Beijing 100094China

To meet the requirements of the Tianwen-1 mission,adaptive entry guidance for entry vehicles,with low lift-to-drag ratios,limited control authority,and large initial state bias,was ***,the entry guidance law is divided into four distinct phases:trim angle-of-attack phase,range control phase,heading alignment phase,and trim-wing deployment *** the range control phase,the predictor–corrector guidance algorithm is improved by planning an on-board trajectory based on the Mars science laboratory(MSL)entry guidance *** nominal trajectory was designed and described using a combination of the downrange value and other states,such as drag acceleration and altitude *** a large initial state bias,the nominal downrange value was modified onboard by weighing the landing accuracy,control authority,and parachute deployment *** biggest advantage of this approach is that it allows the successful correction of altitude errors and the avoidance of control *** overview of the optimal trajectory design process,including a discussion of the design of the initial flight path angle,relevant event trigger,and transition conditions between the four phases,was also ***,telemetry data analysis and post-flight assessment results were used to illustrate the adaptive guidance law,create good conditions for subsequent parachute reduction and power reduction processes,and gauge the success of the mission.

关键词： Tianwen-1 mission adaptive entry guidance on-board trajectory planning telemetry data analysis post-flight assessment

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Collaborative Estimation of Multi-source Heterogeneous Moving Sensors for UAV Cluster 5th

Collaborative Estimation of Multi-source Heterogeneous Movin...

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5th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2021

作者： Yang, Xiangyu Song, Chuang Chen, Linxiu Hao, Mingrui Zhang, Hang Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (纸本)9789811939976

In the cooperative combat mission of UAV cluster, the collaborative estimation of targets by airborne multi-source heterogeneous sensors can make the utmost of the multivariate detection performance of moving sensors placed in multiple spatial positions in complex confrontation environments, in order to deal with the problem of independent estimation failure of sensors carried by single aircraft under the multiple compound interference of non-cooperative targets. In this paper, the typical target motion model, estimation model and interference model are established, then a collaborative estimation method of airborne target detection sensors with different detection accuracy and different interference countermeasure capability is designed for each aircraft in the UAV cluster, based on spatial allocation strategy, nonlinear filtering, interference detection, consistency correlation and information fusion. It is verified by Monte Carlo simulation study that this method can guarantee the obtainment of continuous and accurate guidance information for each aircraft in the cluster, so as to improve the strike accuracy of each UAV and complete the strike mission. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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Reliability Improvement Method for Precision Micro and Special Motors Based on Response Surface Methodology 14

Reliability Improvement Method for Precision Micro and Speci...

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14th International Conference on Reliability, Maintainability and Safety, ICRMS 2023

作者： Xu, Hongwu Fu, Liping Xiang, Gang Peng, Yu Pan, Weidi Wu, Heyuan Aerospace Product Engineering Research Institute China Academy of Aerospace Standardization and Product Assurance Beijing China China Aerospace Science and Technology Corporation Beijing China National Key Laboratory on Aerospace Intelligent Control Beijing Aerospace Automatic Control Institute Beijing China Engineering Technology Department Guizhou Aerospace Linquan Motor Control Ltd. GuiYang China

ISBN: (纸本)9798350329988

Currently, precision micro and special motors are essential basic products in the industry. They are key components widely used in platforms such as aerospace, aircraft, automobiles, and unmanned intelligence. This paper proposes a reliability improvement method for precision micro and special motors based on a response surface methodology. Firstly, we identify key design parameters that affect motor performance through sensitivity analysis methods. Then, the key design parameters are evenly divided into a 5x5 matrix. We conduct 100 Monte Carlo simulation analyses per group and obtain the probability density function of motor speed. Finally, a response surface functional relationship between reliability and key design parameters is established. The values of key design parameters corresponding to the maximum reliability are calculated and used to improve the reliability of the motor. © 2023 IEEE.

关键词： precision micro andspecialmotors reliability response surface sensitivity

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Structure design and analysis of a rigid-soft robotic hand with large load capacity 3

Structure design and analysis of a rigid-soft robotic hand w...

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3rd International Conference on Electrical, Electronics, and Information Engineering, EEIE 2024

作者： Wu, Peichen Lan, Fuming Hong, Wen Chen, Xiaoping Shuai, Wei Cui, Guowei Gao, Yang Institute of Intelligent Manufacturing Guangdong Academy of Sciences Guangdong Key Laboratory of Modern Control Technology Guangzhou510070 China Shanghai Institute of Aerospace System Engineering Shanghai201100 China Intelligent Manufacturing Institute of HFUT HeFei230041 China School of Computer Science and Technology University of Science and Technology of China Hefei230026 China

ISBN: (纸本)9781510688179

In recent years, soft grippers have gained significant attention due to their adaptability and safety. However, when performing horizontal object grasping, their limited structural stiffness prevents them from withstanding the torque generated by friction between the gripper and the object, leading to a loss of contact and limiting their horizontal load capacity. To address this limitation while preserving the adaptability of soft grippers, this paper proposes a gripper structure called the rigid-soft robotic hand, which incorporates lateral rigid connecting rods outside the soft joints. The paper analyzes the bending capacity of the rigid-soft joint using kinematic methods and investigates the influence of link design parameters on maximum bending angle. Subsequently, a finite element analysis is conducted to study the finger structure with the added connecting rods, aiming to optimize the link design parameters. Experimental results demonstrate the grasping capabilities of the rigid-soft gripper in both vertical and horizontal orientations. The findings show that the rigid-soft gripper significantly improves the load-carrying capacity during horizontal object grasping while maintaining the adaptability of the soft gripper. © The Authors.

关键词： Robotic arms

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