Qining Wang

Peking University

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Long Wang

Soochow University

Zhihao Zhou

Zhongda Hospital Southeast University

Jingeng Mai

Peking University

Yan Huang

Beijing Institute of Technology

Enhao Zheng

Chinese Academy of Sciences

Baojun Chen

Tianjin University

Jinying Zhu

Beijing Founder Electronics (China)

Kunlin Wei

Peking University

Dongfang Xu

Peking University

Yanggang Feng

Beihang University

Cooperative Institutions

Peking University

184

Chinese Academy of Sciences

Beihang University

University of Chinese Academy of Sciences

Shanghai Jiao Tong University

Tsinghua University

Beijing Institute of Technology

Beijing Academy of Artificial Intelligence

Chinese Academy of Medical Sciences & Peking Union Medical College

Zhejiang University

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ADDING ADAPTABLE TOE STIFFNESS AFFECTS ENERGETIC EFFICIENCY AND DYNAMIC BEHAVIORS OF LIMIT CYCLE WALKING

Shiqi Sun Yan Huang Qining Wang

Limit cycle

10.1142/9789814623353_0042

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Citations (0)

An Electrical Impedance Tomography Based Interface for Human–Robot Collaboration

IEEE/ASME Transactions on Mechatronics (2020)

Enhao Zheng Yuhua Li Zhao Zhi-yu Qining Wang Hong Qiao

Adaptation to the operator's intents and the external physical uncertainties is critical to the performances of the human–robot collaboration. In this study, we proposed a control interface that combined the electrical impedance tomography (EIT) based sensing approach with the robotic controllers to produce proper assistance with external uncertainties in the collaborative task. The interface first estimates the continuous forearm muscle contractions (represented by the grasp forces) by the optimized EIT features with an easily worn fabric band. The recognition decisions then serve as the control inputs to adjust the state transitions and the desired interaction forces in real time. We evaluated the interface in the tasks of grasp force estimation and human–robot sawing by recruiting more than 20 subjects in total. For grasp force estimation, the interface produced an average of

$R^{2}\geq 0.9$

in both offline and online validations with the feature optimization procedure and a sigmoid regression function. The interface was robust to external disturbances without retraining or manual calibrations. The average

$R^{2}=0.86$

with the untrained dynamic postures, and the average

$R^{2}$

values ranged from 0.85 to 0.88 in the tests with redonning the front-end in interday and intraday uses. For human–robot sawing, the interface accomplished the tasks with a high success rate in controlling the states (

$>$

96%) and intuitive adjusting of the sawing forces, being combined with the designed hybrid admittance/position controller. It was also adaptive to the sawing frequency changes and the sawing directions according to the operator's intents. The interface's performances are comparable, if not better, to the state of the art on both biological signal based grasp force estimation and human–robot sawing. Future efforts are worth being paid in this new direction to get more promising outcomes.

Interface (matter)

10.1109/tmech.2020.3039017

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Citations (18)

Using One Strain Gauge Bridge to Detect Gait Events for a Robotic Prosthesis

Robotica (2019)

Yanggang Feng Qining Wang

Summary For a real-time robotic prosthetic control, gait event detection plays an important role. In this paper, one novel sensor was proposed to realize gait event detection. The sensor includes one strain gauge bridge, which can reflect the entire deformation of carbon-fiber footplate on a robotic prosthesis. Three unilateral transtibial amputees participated in the experiments. Experimental results show that using the proposed sensor method, gait event detection (stance phase and swing phase) accuracy is approximately 100%. Based on the detected gait events, three locomotion modes (sit, stand, and walk) and the corresponding transition modes could be determined. Difference between different gait event detection systems was further conducted.

Footplate

Strain gauge

Bridge (graph theory)

10.1017/s0263574719000390

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Citations (10)

Rolling microneedle electrode array (RoMEA) empowered nucleic acid delivery and cancer immunotherapy

Nano Today (2020)

Tongren Yang Dong Huang Chunhui Li Deyao Zhao Junshi Li

Immunoadjuvant

10.1016/j.nantod.2020.101017

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Citations (46)

Hip Hiking Gait Improvement with Electrohydraulic Robotic Knee: Preliminary Results

Heran Zhong Siyuan Gao Qining Wang

10.1109/embc53108.2024.10782273

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PVEye: A Large Posture-Variant Eye Tracking Dataset for Head-Mounted AR Devices

IEEE Transactions on Visualization and Computer Graphics (2024)

Xiaodong Wang Xiaowei Bai Liang Xie Yingxi Li Qining Wang

Tracking (education)

10.1109/tvcg.2024.3523041

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CCDC 1557153: Experimental Crystal Structure Determination

The Cambridge Structural Database (2018)

Hao Wang Xinglong Dong Junzhong Lin Simon J. Teat Stephanie Jensen

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc1p8br1

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Design of a Dynamic Waist Strap for Reducing Migration of Knee Exoskeletons

Lecture notes in computer science (2021)

Ming Xu Zhihao Zhou Jinyan Shao Qining Wang

10.1007/978-3-030-89095-7_65

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Citations (3)

Forward dynamics simulation of a simplified neuromuscular-skeletal-exoskeletal model based on the CMA-ES optimization algorithm: framework and case studies

Multibody System Dynamics (2024)

Wei Jin Jiaqi Liu Qiwei Zhang Xiaoxu Zhang Qining Wang

10.1007/s11044-024-09982-4

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Traveling-wave antenna model for terahertz radiation from laser-plasma interactions

SciPost Physics Core (2022)

Jiayu Zhao Qining Wang Yuchen Hui Yamin Chen Feifan Zhu

Generation of terahertz (THz) wave from air plasma induced by femtosecond laser pulses with a single central frequency (the so-called "single-color") is one of the fundamental interactions between light and matter, and is also the basis of subsequent pumping schemes using two- or multi-color laser fields. Recently, more states of media beyond gas (e.g., atomic cluster and liquid) via photo-ionization have brought new experimental observations of THz radiation, which can no longer be simply attributed to the mainstream model of the transition-Cherenkov radiation (TCR), thus making the whole picture unclear. Here, we revisited the mechanism of this dynamic process in a new view of the traveling-wave antenna (TWA) model. By successfully reproducing the reported far-field THz radiation profiles from various plasma filament arrangements, the wide applicability of the TWA theory has been revealed. On the other hand in the microscopic view, we investigated the plasma oscillation during filamentation aiming at further bridging the plasma filament and the antenna. Accordingly, THz-plasma resonance has been theoretically and experimentally demonstrated as the elementary THz emitter, paving the way towards fully understanding this important single-color plasma based THz source.

Filamentation

Transition radiation

Photomixing

10.21468/scipostphyscore.5.3.046

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Citations (8)