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Configuration Synthesis and Lightweight Networking of Deployable Mechanism Based on a Novel Pyramid Module

Chinese Journal of Mechanical Engineering 2023年第4期36卷 294-310页

作者： Jinwei Guo Jianliang He Guoxing Zhang Yongsheng Zhao Yundou Xu School of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan UniversityQinhuangdao 066004China Key Laboratory of Advanced Forging and Stamping Technology and Science of Ministry of National Education Yanshan UniversityQinhuangdao 066004China

Deployable mechanism with preferable deployable performance,strong expansibility,and lightweight has attracted much attention because of their potential in aerospace.A basic deployable pyramid unit with good deployability and expandability is proposed to construct a sizeable deployable ***,the basic unit folding principle and expansion method is *** configuration synthesis method of adding constraint chains of spatial closed-loop mechanism is used to synthesize the basic ***,the degree of freedom of the basic unit is analyzed using the screw theory and the link dismantling ***,the three-dimensional models of the pyramid unit,expansion unit,and array unit are established,and the folding motion simulation analysis is carried *** on the number of components,weight reduction rate,and deployable rate,the performance characteristics of the three types of mechanisms are described in ***,prototypes of the pyramid unit,combination unit,and expansion unit are developed to verify further the correctness of the configuration synthesis based on the *** proposed deployable mechanism provides aference for the design and application of antennas with a large aperture,high deployable rate,and *** has a good application prospect in the aerospace field.

关键词： Pyramid unit Deployable mechanism Configuration synthesis Structural design Lightweight networking

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Type Synthesis and Analysis of Rigid-Flexible Hybrid Stable Tracking robot on USV 23rd

Type Synthesis and Analysis of Rigid-Flexible Hybrid Stable ...

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23rd IFToMM China International Conference on Mechanism and Machine Science and Engineering, IFToMM CCMMS 2022

作者： Erwei, Li Ruijie, Lu Tieshi, Zhao Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System Yanshan University Qinhuangdao463400 China Ministry of Education of China Qinhuangdao China

ISBN: (纸本)9789811993978

With the increasing demand for offshore USV-UAV cooperation, the autonomous safe landing of UAV on USV has become a key issue. The USV bears multi-dimensional swaying motion under the influence of wind, waves and currents when sailing, which poses a great challenge to the take-off and landing of UAV. Aiming at the above challenge, this paper proposes a stable tracking robot consisting a PM (parallel Mechanism) and a planar CDPM (Cable-Driven parallel Mechanism). Firstly, according to the DOF (degree of freedom) requirements of the stable tracking robot, a hybrid mechanism with 2R1T PM and 1R2T planar CDPM was constructed on the basis of the principle of DOF distribution and the existing mechanism. Secondly, the process of assisting the take-off and landing of the UAV was determined, and the kinematics and dynamics of the stable tracking robot were carried out based on the screw algebra. Finally, the simulation experiment of the rigid-flexible hybrid stable tracking robot to assist the take-off and landing of the UAV was carried out, which verifies the correctness of the kinematics and dynamics models established, and lays a foundation for the subsequent prototype design and control. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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Development of a Wearable Upper Limb Rehabilitation robot Based on Reinforced Soft Pneumatic Actuators

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Chinese Journal of Mechanical Engineering 2022年第4期35卷 182-190页

作者： Xinbo Chen Shuai Zhang Kaibin Cao Chunjie Wei Wumian Zhao Jiantao Yao Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan UniversityQinhuangdao 066004China Key Laboratory of Advanced Forging&Stamping Technology and Science of Ministry of National Education Yanshan UniversityQinhuangdao 066004China

Dyskinesia of the upper limbs caused by stroke,sports injury,or trafc accidents limits the ability to perform the activities of daily *** the necessary medical treatment,correct and scientifc rehabilitation training for the injured joint is an important auxiliary means during the treatment of the efected upper *** upperlimb rehabilitation robots have some disadvantages,such as a complex structure,poor compliance,high cost,and poor *** this study,a novel soft wearable upper limb rehabilitation robot(SWULRR)with reinforced soft pneumatic actuators(RSPAs)that can withstand high pressure and featuring excellent loading characteristics was *** by RSPAs,this portable SWULRR can perform rehabilitation training of the wrist and elbow *** this study,the kinematics of an SWULRR were analyzed,and the force and motion characteristics of RSPA were studied *** results provide a reference for the development and application of wearable upper limb rehabilitation *** experimental study on the rotation angle of the wrist and the pressure of the RSPA was conducted to test the efect of the rehabilitation training and verify the rationality of the theoretical *** process of wrist rehabilitation training was tested and evaluated,indicating that SWULRR with RSPAs will enhance the fexibility,comfort,and safety of rehabilitation *** work is expected to promote the development of wearable upper-limb rehabilitation robots based on modular reinforced soft pneumatic actuators.

关键词： Upper limb rehabilitation Reinforced soft pneumatic actuator Wearable rehabilitation robot Motion analysis

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Motion Analysis and Simulation Verification of Novel Quadruped robot 12

Motion Analysis and Simulation Verification of Novel Quadrup...

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12th International Conference on CYBER Technology in Automation, Control, and Intelligent systems, CYBER 2022

作者： Ju, Zhongjin Wei, Ke Xu, Yundou Yao, Jiantao Zhao, Yongsheng School of Mechanical Engineering Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan University China

ISBN: (数字)9781665472678

ISBN: (纸本)9781665472678

At present, quadruped robot has attracted more and more scholars' attention, quadruped robot with load capacity can help human beings to carry out special work. However, the current quadruped robot is not suitable for heavy load work in terms of joint arrangement. In this study, the degree of freedom (DOF) analysis and type synthesis of Quadruped robot with traditional 4-SRRR structure are studied, and a quadruped robot with 4-SPRR structure which is more suitable for load application is obtained. The kinematics of the proposed quadruped robot and the orientation adjustment in unstructured terrain are analyzed. Finally, the theoretical results were validated by simulation. The results show that the designed motion control algorithm can make the robot work normally and has a certain orientation adjustment ability. The study that has contributed to a novel quadruped robot. © 2022 IEEE.

关键词： Motion analysis

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Mechanism Design and Walking Stability Study of (2UPS-U) +R Series-parallel Hybrid Bionic Wheel-Legged Quadruped robot

Mechanism Design and Walking Stability Study of (2UPS-U) +R ...

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2023 IEEE International Conference on robotics and Biomimetics, ROBIO 2023

作者： Li, Shanshan Wang, Hongbo Li, Dong Li, Minghao Li, Lianqing Tian, Yu Niu, Jianye Yanshan University Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System Qinhuangdao066004 China Fudan University Academy for Engineering & Technology Shanghai200433 China Yanshan University Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System Key Lab. of Advanced Forging Stamping Technology and Science of Ministry of Education of China Qinhuangdao066004 China

ISBN: (纸本)9798350325706

In this paper, a bionic-based design of a series-parallel hybrid wheel-legged quadruped robot that can realize wheel-foot transformations is presented to achieve footed stable walking, and a method of measuring the static stability of the robot by the evaluation of the torque of the supporting leg rotor axis is proposed with the consideration of the robot's leg mass. Firstly, the whole robot position is solved;Secondly, the force on the robot during static walking is analyzed, and the stability of its static walking is also analyzed from the moment perspective;Finally, the stabilizing support region for static walking is solved, and the stabilizing support region for the robot in such a motion state is calculated. This paper provides high reference significance and value for the mechanism design and walking stability research of series-parallel hybrid wheel-legged quadruped robots. © 2023 IEEE.

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Innovative design and optimization of a two-dimensional deployable nine-grid planar antenna mechanism with a flat reflection surface

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Chinese Journal of Aeronautics 2023年第11期36卷 529-550页

作者： Bo CHEN Ze JIANG Xinlu WEI Luyao GUO Xin ZHOU Yundou XU Junjie QIAN Yongsheng ZHAO Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan UniversityQinhuangdao 066004China Key Laboratory of Advanced Forging&Stamping Technology and Science of Ministry of National Education Yanshan UniversityQinhuangdao 066004China Space Structure and Mechanism Technology Laboratory of China Aerospace Science and Technology Group Co.Ltd Shanghai 201109China Aerospace System Engineering Shanghai Shanghai 201109China

With the development of the aerospace industry,space missions are becoming more complicated and diversified,and there is a demand for antenna mechanisms with a larger physical *** this paper,a planar deployable mechanism is proposed,which can form a flat reflection surface with a small gap between *** this end,a novel large-scale two-dimensional deployable nine-grid planar antenna mechanism is ***,two antenna folding schemes and four supporting mechanism schemes are *** comparison analysis,the antenna configuration scheme with the best comprehensive performance is selected.A kinematic model of the deployable mechanism is established,and its kinematic characteristics are ***,the correctness of the kinematic model is verified by comparing the analytical and simulation results of the kinematic ***,a finite element model of the antenna is *** on the response surface method,the structural parameters of the support rods of the antenna are optimized,and a set of optimized solutions with lightweight and high fundamental frequency characteristics are ***,a prototype of the proposed nine-grid planar antenna is *** feasibility of the deployment principle and the rationality of the designed mechanism are verified by deployment experiments.

关键词： Design optimization Kinematics Planar antenna Structural design Two-dimensional expansion

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An End-Traction Lower Extremity Rehabilitation robot: Structural Design, Motion Analysis, and Experimental Validation 23rd

An End-Traction Lower Extremity Rehabilitation Robot: Struct...

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23rd IFToMM China International Conference on Mechanism and Machine Science and Engineering, IFToMM CCMMS 2022

作者： Bian, Hui Yang, Fan Sun, Zhaoliang Li, Jiachen Ding, Jiebin Li, Shuai Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System Yanshan University Hebei Qinhuangdao066004 China Key Laboratory of Advanced Forging & Stamping Technology and Science Yanshan University Ministry of Education of China Hebei Qinhuangdao066004 China

ISBN: (纸本)9789811993978

An end-traction lower extremity rehabilitation robot named ETLER is designed to meet the rehabilitation needs of patients with lower extremity dysfunction at all stages of recovery, while taking into account the ease of operation for the patient. A single robot can meet the needs of a hemiplegic patient on either side for the designed end-change structure. The robots can also be used in pairs for patients with spinal cord injuries. Meanwhile, the adjustable ankle joint limit design provides customized training programs for the ankle joint. To carry out the trajectory planning of the rehabilitation robot, kinematic analysis and control strategy modeling of the robot and human–machine system are carried out. The functionality and universality of the rehabilitation robot are verified through comparative tests. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Machine design

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Design and Analysis of Single-drive Space Deployable Metamorphic Capture Manipulator

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Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 2025年第1期61卷 30-43页

作者： Han, Bo Yang, Ming Luo, Mingyan Li, Mingyang Yao, Jiantao Zhao, Yongsheng School of Mechanical Engineering Yanshan University Qinhuangdao066004 China Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System Yanshan University Qinhuangdao066004 China

In order to improve the problems of large volume and complex driving of grasping mechanism in space non-cooperative target capture task, a single-drive space deployable truss capture manipulator is proposed. Based on the scissor mechanism and metamorphic principle, the structure of the deployable basic unit is designed, and the deployable unit is connected by the synchronous hinge to realize the synchronous drive of each deployable unit on the single-branch truss. The characteristics of changing the axis of the revolute joint at a specific position can be realized by using the metamorphic joint in the unit, so that the unfolding motion of the manipulator is transformed into the turning motion of the platform, and the capture action of the manipulator is completed. On the basis of considering the friction, the dynamic model of the basic deployable unit is established by using the Lagrange equation. The position, velocity and acceleration of each connecting rod are obtained by vector operation, and the relationship between the driving force and the equivalent torque is obtained. The single-branch manipulator truss is equivalent to a 4R mechanism, and the dynamic model of the manipulator truss combination is further carried out by Newton-Euler recursive method, and the correctness of the model is verified by software simulation. The proposed space capture manipulator has the advantages of expandable, metamorphic, and small number of drives, which can provide theoretical guidance and reference for the research of related technical fields. © 2025 Chinese Mechanical Engineering Society. All rights reserved.

关键词： Trusses

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Research on the motion-free axis synchronization of a novel translational linear structured light scanning system

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Optik 2025年 327卷

作者： Liu, Jianxin Liu, Xingyu Li, Yanwen Chen, Ziming School of Mechanical Engineering Yanshan University Hebei Qinhuangdao066004 China Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan University Hebei Qinhuangdao066004 China

The line-structured light three-dimensional measurement system has the advantages of non-contact, low cost, and high speed. A line mobile structured light scanner measurement system is designed in this paper. The surface scanning process based on line structured light measurement in the fixed camera coordinate system is realized. The single-line structured light emitter is fixed on the slider of the linear module, and a multi-line structured light emitter is added to assist in calculating the light plane equation of the single-line structured light. The system doesn't need to calibrate the trajectory of the linear module slider in the camera coordinate system, and there is no need to synchronize the timestamps of camera image acquisition and motor encoding reading. The error of calculating the parameters of the light plane equation caused by the time difference between the encoder and image acquisition is eliminated. Experiments show that the design has high precision and dense point clouds. © 2025

关键词： Cameras

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Kinematics Analysis of a New parallel Mechanism with Complete Separation of Constraints and Drives 16th

Kinematics Analysis of a New Parallel Mechanism with Complet...

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16th International Conference on Intelligent robotics and Applications, ICIRA 2023

作者： Qiu, Can Wang, Yu Wu, Jiabin He, Xiaoyu Ma, Xuejian Xu, Yundou Zhao, Yongsheng Parallel Robot and Mechatronic System Laboratory of Hebei Province Yanshan University Qinhuangdao066004 China Key Laboratory of Advanced Forging and Stamping Technology and Science of Ministry of National Education Yanshan University Qinhuangdao066004 China

ISBN: (纸本)9789819964888

At present, there is a growing demand for parallel mechanisms with fewer inputs and more outputs. These mechanisms are highly sought after in industries such as aerospace, antenna, and entertainment facilities, among others. Therefore, this paper proposes a new parallel mechanism (PM) that utilizes separation of constraints and drives, resulting in centralized drive management. Thereby achieving a small amount of driving to drive multiple parallel moving platforms. For example, 3nRRS/PPPS parallel mechanism. In this study, we utilize the closed-loop vector method to obtain the inverse solution for the 3RRS/PPPS parallel mechanism. To perform a static analysis, we construct a complete Jacobian matrix for the mechanism. Under the premise of satisfying the workspace, the key dimensional parameters of the mechanism were optimized with the objective of improving the load-carrying capacity of the mechanism and minimizing the driving force. The method of complete separation of constraints and drives is easier to centrally manage drives, greatly improving energy utilization and work efficiency, and having a wide range of application scenarios in antenna, entertainment facilities, and other situations. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Inverse problems

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