共查询到16条相似文献,搜索用时 99 毫秒
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用于实时柔性触觉再现的平行菱形链连接模型 总被引:1,自引:0,他引:1
精度高且实时性好的柔性触觉变形模型是实现触觉再现系统的关键。提出了一种新的基于物理意义的平行菱形链连接触觉变形模型,系统中各个链结构单元相对位移的叠加对外等效为物体表面的变形,与之相连的弹簧弹性力的合力等效为物体表面的接触力。使用Delta 6-DOF手控器,建立了触觉再现实验系统,对柔性体的接触变形和实时虚拟触觉反馈进行仿真, 实验结果表明所提出的模型不仅计算简单,而且能够保证触觉接触力和形变计算具有较高精度,满足虚拟现实系统对精细作业和实时性的要求。 相似文献
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力/触觉再现设备的研究现状与应用 总被引:2,自引:0,他引:2
力/触觉再现技术作为一种新兴的人机交互模式在虚拟现实系统得到较多应用。力/触觉再现设备是力/触觉再现系统实现过程中必不可少的环节,受到广泛的重视和研究。讨论了力/触觉再现设备的种类和特点,分类介绍了国内外力/触觉再现设备的研究现状,并作了分析比较。最后讨论了力/触觉再现设备在不同领域的应用,并探讨了其未来的研究发展趋势。 相似文献
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柔顺性触觉再现的研究难点主要集中在对触觉机理了解不深入、动态的感知过程、装置性能有限等方面.介绍了当前几种有代表性的柔顺性触觉再现装置:基于电流变液的触觉再现装置、气囊触觉再现装置、气动阵列触觉再现装置和基于弹性梁触觉再现装置.在此基础上讨论了这些装置的优缺点,并进行了比较.最后总结了柔顺性触觉再现技术的发展思路. 相似文献
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本文描述了一种基于全内反射原理,用透明橡胶材料作为波导板的柔性触觉传感器。该传感器除具有一般刚性波导板触觉传感器的高分辨力等特点外,还具有柔性好,力灵敏阈值低,不怕碰撞等特点,该传感器特别适合装在智能机器人手爪上,为机器人系统高效率地获取物体形状,位置和姿态信息,实现智能抓握物体,操作物体等功能提供了有效的手段。 相似文献
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根据人的触觉是动态触觉的原理,提出了一种新的纹理触觉再现方法及其实现装置,该装置能在使用者手指端部产生类似于纹理感觉的触觉信息.它的主要组成部分是铝合金制成的圆筒,上面分布着大小不同的凹孔和凸点,通过伺服电机带动它旋转.手指在匀速旋转的圆筒上来回滑动并触摸上面的凹孔与凸点,能有明显的触觉感受,而且不同的旋转速度将会带来不同的触觉效果.通过对该实验装置进行大量实验,统计归纳出实验者在各种情况下所获得的触觉感受,证实该装置在模拟纹理触觉方面确有成效,对纹理触觉的发展起到一定的促进作用. 相似文献
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力觉主手作为主从遥操作机器人系统的关键部件,其机构特性和力控制性能直接关系到整个遥操作系统能否完成预期的任务要求。近年来,关于力觉主手及其力控制方法的研究已成为机器人遥操作领域的研究热点。文中详细介绍了力觉主手在机构设计和力控制算法方面研究现状和发展趋势。 相似文献
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A Survey of Haptic Rendering Techniques 总被引:3,自引:0,他引:3
Computer Graphics technologies have developed considerably over the past decades. Realistic virtual environments can be produced incorporating complex geometry for graphical objects and utilising hardware acceleration for per pixel effects. To enhance these environments, in terms of the immersive experience perceived by users, the human's sense of touch, or haptic system, can be exploited. To this end haptic feedback devices capable of exerting forces on the user are incorporated. The process of determining a reaction force for a given position of the haptic device is known as haptic rendering. For over a decade users have been able to interact with a virtual environment with a haptic device. This paper focuses on the haptic rendering algorithms which have been developed to compute forces as users manipulate the haptic device in the virtual environment. 相似文献
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In Sik Yu Hyun Soo Woo Hyoung Il Son Woojin Ahn Hoeryong Jung 《Advanced Robotics》2013,27(18):2115-2143
This paper presents a new design and analysis of a haptic interface for a gastrointestinal endoscopy simulation. The gastrointestinal endoscopy is a procedure in which the digestive tract and organs of a patient are diagnosed and treated using a long and flexible endoscope. The developed haptic interface incorporates two degrees of freedom (DOF), each of which is necessary to describe the movements of an endoscope during the actual endoscopy procedures. The haptic interface has a translational motion mechanism to implement the insertion movement of the endoscope, and a rotational motion mechanism to implement the rotational movement of the endoscope. The endoscope included in the haptic interface is supported by a folding guide to prevent the endoscope from buckling. Force feedback in each direction is provided by wire-driven mechanisms. The developed haptic interface has a workspace, sensitivity, and maximum attainable force and torque enough to simulate the endoscopy procedures such as colonoscopy, upper GI (gastrointestinal) endoscopy, and endoscopic retrograde cholangiopancreatography (ERCP). The developed haptic interface is applied to implementation of a colonoscopy simulation. Performance including force bandwidth is evaluated through experiments and simulation. 相似文献
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In this paper, the authors intend to demonstrate a new intuitive force-feedback device that is ideally suited for engineering design. Force feedback for the device is tension-based and is characterised by 7 degrees of freedom (3DOF for translation, 3DOF for rotation, and 1DOF for grasp). The SPIDAR-G (SPace Interface Device for Artificial Reality with Grip) allows users to interact with virtual objects naturally by manipulating two hemispherical grips located in the centre of a device frame. Force feedback is achieved by controlling tension in cables that are connected between a grip and motors located at the corners of a frame. Methodologies will be discussed for displaying force and calculating translation, orientation and grasp using the length of 8 connecting cables. The SPIDAR-G is characterised by smooth force feedback, minimised inertia, no backlash, scalability and safety. Such features are attributed to strategic cable arrangement and control that results in stable haptic rendering. Experimental results validate the feasibility of the proposed device and example applications are described. 相似文献
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本文介绍了一种基于82C55芯片的单片机键盘显示接口方法,给出了硬件电路图和软件设计方法,该键盘显示接口方法已在工业控制器的设计中得到应用,实践表明,该键盘显示接口方法简单可靠。 相似文献