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学者姓名：崔晶
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Abstract ：
This paper introduces an innovative methodology designed for intrinsic sensing of the adhesion state in directional dry adhesives. Rooted in the inherent shear actuation requirements of these adhesives, the sensing framework incorporates an elastic beam model for a single seta and an equivalent spring model for setae arrays during actuation, facilitating the transformation of complex micro -scale contact issues into relatively simple mechanical measurements. Using microwedge adhesives as a representative case study, the methodology is validated by a series of quantitative experiments and an experimental robotic gripper scenario, in which a straightforward and cost-effective commercial strain gauge proves competent for complex contact state sensing. The proposed methodology indicates substantial implications for improving the operational performance and expanding the application range of gecko -inspired adhesive operations.
Keyword ：
Adhesion stiffness Adhesion stiffness Contact state sensing Contact state sensing Robotic gripper Robotic gripper Directional dry adhesives Directional dry adhesives
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| GB/T 7714 | Chen, Gen , Zhang, Zijian , Wu, Junsong et al. A novel methodology for intrinsic adhesion state sensing in gecko-inspired directional dry adhesives [J]. | SENSORS AND ACTUATORS A-PHYSICAL , 2024 , 374 . |
| MLA | Chen, Gen et al. "A novel methodology for intrinsic adhesion state sensing in gecko-inspired directional dry adhesives" . | SENSORS AND ACTUATORS A-PHYSICAL 374 (2024) . |
| APA | Chen, Gen , Zhang, Zijian , Wu, Junsong , Zhang, Bolun , Chu, Zhongyi , Cui, Jing . A novel methodology for intrinsic adhesion state sensing in gecko-inspired directional dry adhesives . | SENSORS AND ACTUATORS A-PHYSICAL , 2024 , 374 . |
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Abstract ：
The automation and assembly lines of factories have faced the need for reliable handling of porous, fragile, and soft objects. Current soft grippers have difficulty robustly grasping flat, flexible surfaces without distorting them. This paper proposes a soft gripper based on annulus microwedge adhesive for grasping flat objects using negative pressure actuation mechanisms, which can achieve controllable adhesives to reliably grasp and easily release smooth flat objects. This is achieved through negative pressure actuation, which provides a centripetal load to the annular microwedge adhesives for strong attachment, by returning to normal pressure, the centripetal load is rapidly removed, allowing for easy detachment from the adhesive surface. Additionally, the relationship between the geometrical parameters of the deformation chamber and the contact area of annulus microwedges is investigated by using finite-element method models and experiments. The results show that the wall thickness is a key parameter in designing the deformation chamber. The results of the payload test have determined the geometrical and pressure parameters of the deformation chamber with the best adhesion performance. Finally, a demonstration shows that the gripper can handle various objects for potential applications, such as in clean environmental industries.
Keyword ：
Microwedge adhesives gecko adhesives negative-pressure actuation soft gripper Microwedge adhesives gecko adhesives negative-pressure actuation soft gripper
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| GB/T 7714 | Liu, Huimin , Cui, Jing , Jin, Xi et al. Design of a soft gripper with negative-pressure actuated synthetic annulus microwedge adhesive [J]. | JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY , 2024 , 38 (23) : 4258-4274 . |
| MLA | Liu, Huimin et al. "Design of a soft gripper with negative-pressure actuated synthetic annulus microwedge adhesive" . | JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY 38 . 23 (2024) : 4258-4274 . |
| APA | Liu, Huimin , Cui, Jing , Jin, Xi , Su, Jiejiang , Chu, Zhongyi . Design of a soft gripper with negative-pressure actuated synthetic annulus microwedge adhesive . | JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY , 2024 , 38 (23) , 4258-4274 . |
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Abstract ：
A key challenge in robotics is developing efficient methods for grasping objects of different shapes, sizes, poses, and properties. In this study, we propose a positive pressure actuation gripper that combination of annular microwedge adhesion and particle jamming. The gripper comprises an elastic membrane enclosing a mass of granular material, allowing for control of the backing stiffness during contact. In the inflated state, the elastic membrane is stretched, generating centripetal loading force for annular microwedge adhesion. By transitioning into a negative pressure jammed state, a rigid backing stiffness is achieved to maintain adhesion stability, later reverting to atmospheric pressure enables the gripper to release the object. Consequently, this gripper through annular microwedge adhesion offers controllable adhesion for grip and release a wide range of objects that are typically challenging for current soft grippers, such as flat objects, soft objects, or objects with complex geometries. We fabricate the positive pressure actuation gripper and clarify its working mechanism for both flat and curved surfaces. Furthermore, a theoretical analysis is carried out to calculate the frictional stress of the elastic membrane when it is in contact with an object. Experimental results on contact area demonstrate the feasibility of positive pressure actuation mechanism for annulus microwedge adhesion. The payload test determines the parameters of the elastic membrane with the best adhesion performance. The final demonstration shows the applicability of this soft gripper in various scenarios.
Keyword ：
controllable adhesion controllable adhesion soft gripper soft gripper jamming jamming positive pressure actuation positive pressure actuation
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| GB/T 7714 | Liu, Huimin , Cui, Jing , Zhang, Bolun et al. A particle jamming soft gripper integration of annular microwedge adhesion [J]. | SMART MATERIALS AND STRUCTURES , 2024 , 33 (7) . |
| MLA | Liu, Huimin et al. "A particle jamming soft gripper integration of annular microwedge adhesion" . | SMART MATERIALS AND STRUCTURES 33 . 7 (2024) . |
| APA | Liu, Huimin , Cui, Jing , Zhang, Bolun , Li, Minghao , Cai, Jiazhen , Chu, Zhongyi . A particle jamming soft gripper integration of annular microwedge adhesion . | SMART MATERIALS AND STRUCTURES , 2024 , 33 (7) . |
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Abstract ：
This study presents a soft gripper incorporating a novel belt loop actuated adhesion design, offering a comprehensive solution for the fabrication, variable-scale actuation, and contact sensing of directional adhesives. The solution facilitates high-resolution control of directional adhesives with relatively low device requirements. On this basis, the gripper adopts a minimal interaction force actuation strategy, thereby enabling the maximum gentleness in handling objects. The gripper has demonstrated its non-destructiveness and efficiency on various fragile flat objects. Additionally, the sensing capabilities for adhesive pairs allow it to percept and handle unlocated objects.
Keyword ：
Grippers and other end-effectors Grippers and other end-effectors perception for grasping and manipulation perception for grasping and manipulation
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| GB/T 7714 | Chen, Gen , Wu, Junsong , Zhang, Zijian et al. A Soft Robotic Gripper With a Belt Loop Actuated Adhesion Design for Gentle Handling of Fragile Object [J]. | IEEE ROBOTICS AND AUTOMATION LETTERS , 2024 , 9 (8) : 6784-6791 . |
| MLA | Chen, Gen et al. "A Soft Robotic Gripper With a Belt Loop Actuated Adhesion Design for Gentle Handling of Fragile Object" . | IEEE ROBOTICS AND AUTOMATION LETTERS 9 . 8 (2024) : 6784-6791 . |
| APA | Chen, Gen , Wu, Junsong , Zhang, Zijian , Zhang, Bolun , Chu, Zhongyi , Cui, Jing . A Soft Robotic Gripper With a Belt Loop Actuated Adhesion Design for Gentle Handling of Fragile Object . | IEEE ROBOTICS AND AUTOMATION LETTERS , 2024 , 9 (8) , 6784-6791 . |
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Abstract ：
Purpose - Accurate segmentation of artificial assembly action is the basis of autonomous industrial assembly robots. This paper aims to study the precise segmentation method of manual assembly action. Design/methodology/approach - In this paper, a temporal-spatial-contact features segmentation system (TSCFSS) for manual assembly actions recognition and segmentation is proposed. The system consists of three stages: spatial features extraction, contact force features extraction and action segmentation in the temporal dimension. In the spatial features extraction stage, a vectors assembly graph (VAG) is proposed to precisely describe the motion state of the objects and relative position between objects in an RGB-D video frame. Then graph networks are used to extract the spatial features from the VAG. In the contact features extraction stage, a sliding window is used to cut contact force features between hands and tools/parts corresponding to the video frame. Finally, in the action segmentation stage, the spatial and contact features are concatenated as the input of temporal convolution networks for action recognition and segmentation. The experiments have been conducted on a new manual assembly data set containing RGB-D video and contact force.Findings - In the experiments, the TSCFSS is used to recognize 11 kinds of assembly actions in demonstrations and outperforms the other comparative action identification methods.Originality/value - A novel manual assembly actions precisely segmentation system, which fuses temporal features, spatial features and contact force features, has been proposed. The VAG, a symbolic knowledge representation for describing assembly scene state, is proposed, making action segmentation more convenient. A data set with RGB-D video and contact force is specifically tailored for researching manual assembly actions.
Keyword ：
Multimodal perception Multimodal perception Action segmentation Action segmentation Learning from demonstration Learning from demonstration Assembly Assembly
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| GB/T 7714 | Kang, Zengxin , Cui, Jing , Chu, Zhongyi . Manual assembly actions segmentation system using temporal-spatial-contact features [J]. | ROBOTIC INTELLIGENCE AND AUTOMATION , 2023 , 43 (5) : 509-522 . |
| MLA | Kang, Zengxin et al. "Manual assembly actions segmentation system using temporal-spatial-contact features" . | ROBOTIC INTELLIGENCE AND AUTOMATION 43 . 5 (2023) : 509-522 . |
| APA | Kang, Zengxin , Cui, Jing , Chu, Zhongyi . Manual assembly actions segmentation system using temporal-spatial-contact features . | ROBOTIC INTELLIGENCE AND AUTOMATION , 2023 , 43 (5) , 509-522 . |
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Abstract ：
本发明公开了一种基于微位移加载形式的平面黏附机构，包括外框架、电磁铁、弹簧、导轨滑块以及粘结在滑块下方的楔形刚毛束，通过控制楔形刚毛切向微位移的距离对其进行加载。在电磁铁未通电时，铁板与电磁铁间存在微小间隙，此间隙视楔形刚毛横向具体尺寸可调，即为楔形刚毛束切向微位移距离。对电磁铁通电，铁板带动滑块向两侧移动，弹簧被拉伸同时螺钉离开限位块。楔形刚毛束与目标物接触后电磁铁断电，在复位弹簧的作用下使滑块向内运动直至螺钉碰到限位块，实现微位移高切向力加载，此时楔形刚毛束被充分拉弯，产生较大的法向黏附力从而实现对目标物的稳定黏附。采用微位移的加载方式使楔形刚毛束对不同平面都有适应性并且黏附稳定、成功率高。
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| GB/T 7714 | 崔晶 , 王佳奇 , 楚中毅 et al. 一种基于微位移加载楔形刚毛束的平面黏附机构 : CN202210123899.0[P]. | 2022-02-10 . |
| MLA | 崔晶 et al. "一种基于微位移加载楔形刚毛束的平面黏附机构" : CN202210123899.0. | 2022-02-10 . |
| APA | 崔晶 , 王佳奇 , 楚中毅 , 刘慧敏 . 一种基于微位移加载楔形刚毛束的平面黏附机构 : CN202210123899.0. | 2022-02-10 . |
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Abstract ：
本发明公开一种拾取臂机构，包括刚性组件和柔性组件，刚性的主臂和调节臂不直接接触待拾取目标物体，主臂和调节臂能够牵引柔性组件，在柔性组件与待拾取目标物体接触并拾取物体的同时，刚性组件调节主臂与调节臂之间的角度，以保证柔性组件与目标拾取物体的充分接触，提高拾取臂机构在拾取以及后续搬运过程中柔性组件的工作稳定性。本发明还提供一种拾取装置，包括上述的拾取臂机构和驱动组件，主臂与驱动组件相连，柔性组件与机器人其他结构相连，驱动组件能够带动拾取臂机构运动，主臂与调节臂发生相对转动，以调整、张紧并支撑柔性基底，柔性组件能够适应异形待拾取目标物体，保证拾取臂机构的稳定拾取，降低拾取装置的控制难度。
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| GB/T 7714 | 崔晶 , 张博伦 , 楚中毅 et al. 一种拾取装置及拾取臂机构 : CN202210790484.9[P]. | 2022-07-05 . |
| MLA | 崔晶 et al. "一种拾取装置及拾取臂机构" : CN202210790484.9. | 2022-07-05 . |
| APA | 崔晶 , 张博伦 , 楚中毅 , 伍俊松 , 刘慧敏 . 一种拾取装置及拾取臂机构 : CN202210790484.9. | 2022-07-05 . |
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Abstract ：
This article proposes a classifier-based approximator to compensate for friction in a high accelerated positioning system. Since friction function is globally non-smooth, an unsupervised k-means clustering algorithm is adopted to classify the friction into micro and macro motion segment, then the frictions are estimated with two sub-approximator in the corresponding segment respectively. Due to the unsupervised classification of friction, the classifier-based approximator can realize universal approximation of nonlinear friction with high precision. Finally, comparative experiments on a high accelerated position system driven by voice coil motors are conducted to verify the effectiveness of the proposed method. The proposed method can reduce the root mean square error (RMSE) of tracking by 57.2%, 19.1%, and 27.4% compared with a parametric model, recurrent neural network (RNN), and incremental extreme learning machine (I-ELM), respectively.
Keyword ：
friction modeling friction modeling Training Training Clustering algorithms Clustering algorithms high accelerated positioning system high accelerated positioning system Friction Friction Motion segmentation Motion segmentation Adaptation models Adaptation models Classifier-based approximator Classifier-based approximator Approximation algorithms Approximation algorithms motion control motion control Acceleration Acceleration
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| GB/T 7714 | Chu, Zhongyi , Chen, Gen , Cui, Jing et al. Classifier-Based Approximator for Friction Compensation in High Accelerated Positioning System [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2021 , 68 (5) : 4090-4098 . |
| MLA | Chu, Zhongyi et al. "Classifier-Based Approximator for Friction Compensation in High Accelerated Positioning System" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 68 . 5 (2021) : 4090-4098 . |
| APA | Chu, Zhongyi , Chen, Gen , Cui, Jing , Wang, Siyu , Sun, Fuchun . Classifier-Based Approximator for Friction Compensation in High Accelerated Positioning System . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2021 , 68 (5) , 4090-4098 . |
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Abstract ：
The space debris occupies the orbit resources greatly, which seriously threats the safety of spacecraft for its high risks of collisions. Many theories about space debris removal have been put forward in recent years. The Electro Dynamic Tether (EDT), which can be deployed under gravity gradient, is considered to be an effective method to remove debris in low orbit for its low power consumption. However, in order to generate sufficient Lorentz force, the EDT needs to be deployed to several kilometers, which increases the risks of tangling and the instability of the EDT system. In the deployment process, different initial in-plane/out-of-plane angles, caused by direction error at initial release or the initial selection of ejection, affect the motion of EDT system seriously. In order to solve these problems, firstly, this paper establishes the dynamic model of the EDT system. Then, based on the model, safety metrics of avoiding tangling and assessing system stability during EDT deployment stage are designed to quantitatively evaluate the EDT system security. Finally, several numerical simulations are established to determine the safety ranges of the initial in-plane/out-of-plane angles on the EDT deployment. © 2020 Chinese Society of Aeronautics and Astronautics
Keyword ：
System stability System stability Tetherlines Tetherlines Computer aided software engineering Computer aided software engineering Space debris Space debris Orbits Orbits
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| GB/T 7714 | CUI, Jing , SHEN, Tao , WEI, Tao et al. Tangling and instability effect analysis of initial in-plane/out-of-plane angles on electrodynamic tether deployment under gravity gradient [J]. | Chinese Journal of Aeronautics , 2021 , 34 (1) : 1-9 . |
| MLA | CUI, Jing et al. "Tangling and instability effect analysis of initial in-plane/out-of-plane angles on electrodynamic tether deployment under gravity gradient" . | Chinese Journal of Aeronautics 34 . 1 (2021) : 1-9 . |
| APA | CUI, Jing , SHEN, Tao , WEI, Tao , CHU, Zhongyi . Tangling and instability effect analysis of initial in-plane/out-of-plane angles on electrodynamic tether deployment under gravity gradient . | Chinese Journal of Aeronautics , 2021 , 34 (1) , 1-9 . |
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Abstract ：
本发明公开了一种触觉传感器及其制备方法及力和/或力矩的测量装置，其中，触觉传感器由上至下依次包括：上层基板、上层电极、电介质层、下层电极和下层基板，可用于感应正压力、剪切力和力矩。本发明通过设置镜像相对且阵列式对称分布的多对叉指电极作为上层电极及下层电极，实现了基于单层结构的多维力和/或力矩的高灵敏度感应，且提高了对法向正压力的空间分辨能力。通过采用压膜成型的方法阵列式扩展电介质层，降低了触觉传感器的制备成本，且简化了其制备工艺。通过将触觉传感器与处理器连接，利用处理器根据触觉传感器的传感信号确定受力类型，并计算得到相应的力和/或力矩的值，实现了对多维力和/或力矩的测量。
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| GB/T 7714 | 崔晶 , 冯凯明 , 王易捷 et al. 一种触觉传感器及其制备方法及力和/或力矩的测量装置 : CN202111024983.9[P]. | 2021-09-02 . |
| MLA | 崔晶 et al. "一种触觉传感器及其制备方法及力和/或力矩的测量装置" : CN202111024983.9. | 2021-09-02 . |
| APA | 崔晶 , 冯凯明 , 王易捷 , 楚中毅 , 胡智凯 . 一种触觉传感器及其制备方法及力和/或力矩的测量装置 : CN202111024983.9. | 2021-09-02 . |
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