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期刊论文 6

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步态切换；欠驱动3D双足机器人；基于事件的反馈控制器；自适应控制律 1

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A feasibility study on the design and walking operation of a biped locomotor via dynamic simulation

null

《机械工程前沿（英文）》 2016年 第11卷 第2期   页码 144-158 doi: 10.1007/s11465-016-0391-0

摘要：

A feasibility study on the mechanical design and walking operation of a Cassino biped locomotor is presented in this paper. The biped locomotor consists of two identical 3 degrees-of-freedom tripod leg mechanisms with a parallel manipulator architecture. Planning of the biped walking gait is performed by coordinating the motions of the two leg mechanisms and waist. A three-dimensional model is elaborated in SolidWorks® environment in order to characterize a feasible mechanical design. Dynamic simulation is carried out in MSC.ADAMS® environment with the aims of characterizing and evaluating the dynamic walking performance of the proposed design. Simulation results show that the proposed biped locomotor with proper input motions of linear actuators performs practical and feasible walking on flat surfaces with limited actuation and reaction forces between its feet and the ground. A preliminary prototype of the biped locomotor is built for the purpose of evaluating the operation performance of the biped walking gait of the proposed locomotor.

关键词： feasibility study     biped locomotor     biped walking     mechanical design     dynamic simulation     tripod leg mechanism     3-UPU parallel manipulator    

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Stability and agility: biped running over varied and unknown terrain

Yang YI,Zhi-yun LIN

《信息与电子工程前沿（英文）》 2015年 第16卷 第4期   页码 283-292 doi: 10.1631/FITEE.1400284

摘要： We tackle the problem of a biped running over varied and unknown terrain. Running is a necessary skill for a biped moving fast, but it increases the challenge of dynamic balance, especially when a biped is running on varied terrain without terrain information (due to the difficulty and cost of obtaining the terrain information in a timely manner). To address this issue, a new dynamic indicator called the sustainable running criterion is developed. The main idea is to sustain a running motion without falling by maintaining the system states within a running-feasible set, instead of running on a periodic limit cycle gait in the traditional way. To meet the precondition of the criterion, the angular moment about the center of gravity (COG) is restrained close to zero at the end of the stance phase. Then to ensure a small state jump at touchdown on the unknown terrain, the velocity of the swing foot is restrained within a specific range at the end of the flight phase. Finally, the position and velocity of the COG are driven into the running-feasible set. A five-link biped with underactuated point foot is considered in simulations. It is able to run over upward and downward terrain with a height difference of 0.15 m, which shows the effectiveness of our control scheme.

关键词： Underactuated running biped     Dynamic balance     Varied and unknown terrain    

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Operation analysis of a Chebyshev-Pantograph leg mechanism for a single DOF biped robot

Conghui LIANG, Marco CECCARELLI, Yukio TAKEDA

《机械工程前沿（英文）》 2012年 第7卷 第4期   页码 357-370 doi: 10.1007/s11465-012-0340-5

摘要：

In this paper, operation analysis of a Chebyshev-Pantograph leg mechanism is presented for a single degree of freedom (DOF) biped robot. The proposed leg mechanism is composed of a Chebyshev four-bar linkage and a pantograph mechanism. In contrast to general fully actuated anthropomorphic leg mechanisms, the proposed leg mechanism has peculiar features like compactness, low-cost, and easy-operation. Kinematic equations of the proposed leg mechanism are formulated for a computer oriented simulation. Simulation results show the operation performance of the proposed leg mechanism with suitable characteristics. A parametric study has been carried out to evaluate the operation performance as function of design parameters. A prototype of a single DOF biped robot equipped with two proposed leg mechanisms has been built at LARM (Laboratory of Robotics and Mechatronics). Experimental test shows practical feasible walking ability of the prototype, as well as drawbacks are discussed for the mechanical design.

关键词： biped robots     leg mechanisms     simulation    

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An experimental analysis of human straight walking

Tao LI, Marco CECCARELLI

《机械工程前沿（英文）》 2013年 第8卷 第1期   页码 95-103 doi: 10.1007/s11465-013-0357-4

摘要：

In this paper, an experimental analysis of human straight walking has been presented. Experiments on human walking were carried out by using Cassino tracking system which is a passive cable-based measuring system. This system is adopted because it is capable of both pose and wrench measurements with fairly simple monitoring of operation. By using experimental results, trajectories of a human limb extremity and its posture have been analyzed; forces that are exerted against cables by the limb of a person under test have been measured by force sensors as well. Furthermore, by using experimental tests, modeling and characterization of the human straight walking gait have been proposed.

关键词： human locomotion     walking gait     characterization     humanoid robot     biped robot    

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Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

《机械工程前沿（英文）》 2012年 第7卷 第2期   页码 100-108 doi: 10.1007/s11465-012-0318-3

摘要：

This paper introduces a method to generate the planar jumping motion for biped robot. In this work, through determining the upper body posture trajectory in the flight phase, the foot landing posture is made to be flat while landing. Together with properly designing the trajectory for local center of gravity and the foot landing velocity, the soft landing trajectory is generated. A controller on the ankle joint is added to avoid significant impact with the ground and stabilize the robot after landing. Jumping motion with stable landing is achieved in a dynamic simulation environment based on this method.

关键词： biped jumping     stable landing control     jumping motion generation    

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欠驱动3D双足机器人步态切换控制策略 Research Articles

Hai-hui YUAN, Yi-min GE, Chun-biao GAN

《信息与电子工程前沿（英文）》 2019年 第20卷 第8期   页码 1026-1035 doi: 10.1631/FITEE.1800206

摘要： 由于应用前景广泛，双足机器人研究引起国内外学者重点关注。实际中，双足机器人常需进行步态切换以实现灵活步行。本文针对一个五杆欠驱动3D双足机器人步态切换问题，提出一种基于分层控制的切换控制策略。该策略包括切换控制器设计以及基于事件的反馈控制器设计。所设计的基于事件反馈控制器会在每一步对反馈增益进行自适应更新，而所设计的切换控制器将引导机器人从当前步态到达目标步态的邻域范围以实现平滑收敛。与以往研究相比，本文采用参数优化法设计切换控制器参数，确保机器人在步态切换过程中满足物理约束条件。最后，为验证所提控制策略的有效性，针对欠驱动3D双足机器人进行了数值仿真验证。

关键词： 步态切换；欠驱动3D双足机器人；基于事件的反馈控制器；自适应控制律    

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标题 作者 时间 类型 操作

A feasibility study on the design and walking operation of a biped locomotor via dynamic simulation

null

期刊论文

Stability and agility: biped running over varied and unknown terrain

Yang YI,Zhi-yun LIN

期刊论文

Operation analysis of a Chebyshev-Pantograph leg mechanism for a single DOF biped robot

Conghui LIANG, Marco CECCARELLI, Yukio TAKEDA

期刊论文

An experimental analysis of human straight walking

Tao LI, Marco CECCARELLI

期刊论文

Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

期刊论文

欠驱动3D双足机器人步态切换控制策略

Hai-hui YUAN, Yi-min GE, Chun-biao GAN

期刊论文