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2篇 您的检索式:作者名="Christopher Pretty"
    题名 作者 年代 出处 被引量
1Design and Development of a Wheel-less Snake Robot with Active Stiffness Control for Adaptive Pedal Wave Locomotion显示文摘This paper presents the design and manufacture process of a wheel-less,modular snake robot with series elastic actuators to reliably measure motor torque signal and investigate the effectiveness of active stiffness control for achieving adaptive snake-like locomotion.A polyurethane based elastic element to be attached between the motor and the links at each joint was designed and manufactured using water jet cutter,which makes the final design easier to develop and more cost-effective,compared to existing snake robots with torque measurement capabilities.The reliability of such torque measurement mechanism was examined using simulated dynamical model of pedal wave motion,which proves the efficacy of the design.A distributed control system was also designed,which with the help of an admittance controller,enables active control of the joint stiffness to achieve adaptive snake robot pedal wave locomotion to climb over obstacles,which unlike existing methods does not require prior information about the location of the obstacle.The effectiveness of the proposed controller in comparison to open-loop control strategy was verified by the number of experiments.The results show the capability of the robot to successfully climb over obstacles with the height of more than 55%of the diameter of the snake robot modules.Mohammadali Javaheri Koopaee Sander Bal Christopher Pretty Xiaoqi Chen 2019Journal of Bionic Engineering2019,16,4:1
2Development of a model-based clinical sepsis biomarker for critically ill patients显示文摘Jessica Lin Jacquelyn D. Parente J. Geoffrey Chase Geoffrey M. Shaw Amy J. Blakemore Aaron J. LeCompte Christopher Pretty Normy N. Razak Dominic S. Lee Christopher E. Hann Sheng-Hui Wang 2010Computer Methods and Programs in Biomedicine2010,,2:1
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