共查询到15条相似文献,搜索用时 78 毫秒
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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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Jian-Long Hao Xiao-Liang Xie Gui-Bin Bian Zeng-Guang Hou Xiao-Hu Zhou 《IEEE/CAA Journal of Automatica Sinica》2018,5(1):261-269
With the development of human robot interaction technologies, haptic interfaces are widely used for 3D applications to provide the sense of touch. These interfaces have been utilized in medical simulation, virtual assembly and remote manipulation tasks. However, haptic interface design and control are still critical problems to reproduce the highly sensitive touch sense of humans. This paper presents the development and evaluation of a 7-DOF (degree of freedom) haptic interface based on the modified delta mechanism. Firstly, both kinematics and dynamics of the modified mechanism are analyzed and presented. A novel gravity compensation algorithm based on the physical model is proposed and validated in simulation. A haptic controller is proposed based on the forward kinematics and the gravity compensation algorithm. To evaluate the control performance of the haptic interface, a prototype has been implemented. Three kinds of experiments:gravity compensation, static response and force tracking are performed respectively. The experimental results show that the mean error of the gravity compensation is less than 0.7 N and the maximum continuous force along the axis can be up to 6 N. This demonstrates the good performance of the proposed haptic interface. 相似文献
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Humans can perceive a wide and small surface undulation that is hundreds micrometers in height and hundreds millimeters in width by scanning the surface with their whole fingers and palm in the distal and proximal directions. We developed a wearable haptic device that presents a surface undulation to the hand. The device is composed of nine independent stimulator units that control the heights of nine finger pads of the index finger, the middle finger, and the ring finger (three units on each finger) according to the virtual surface. Three experiments are carried out to evaluate the haptic perception by the haptic device. A first experiment shows that the perceived dimensions are diminished as compared to the dimensions applied by the haptic device. On the basis of this result, the applied dimensions are calibrated to match the virtual surface undulation to the real surface undulation. A second experiment shows that the shape of gently-curved surfaces can be estimated with the haptic display. A third experiment shows that the discrimination threshold is not different between the virtual surface undulation and the real surface undulation. These experimental results show the applicability of the haptic device as a haptic interface. 相似文献