Slip Speed Feedback for Grip Force Control
Slip Speed Feedback for Grip Force Control
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DOI：
10.1109/tbme.2012.2199491
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发表时间：
2012-08-01
影响因子：
4.6
通讯作者：
Pfeifer, Rolf
中科院分区：
文献类型：
--
作者：
Damian, Dana D.;Arieta, Alejandro Hernandez;Pfeifer, Rolf
通过个体发育学的抓握实践，通过一个复杂的机械感受器网络整合了许多关于机械事件的线索，已经解决了人手的抓握稳定性。一个工程假肢接口介绍了相当大的扰动风险抓，要求反馈方式，解决潜在的滑动现象。在这项研究中，我们提出了一种增强的滑动反馈模式，具有潜在的肌电假肢应用，中继信息有关滑动事件，特别是滑动发生和滑动速度。建议的反馈方式，实施电触觉刺激，在心理物理学研究中进行了评估，在一个简化的设置滑控制。所得到的结果进行了比较，与视觉和二进制滑差反馈，传输开关信息的滑动检测。滑动速度显示的滑动控制效率与通过视觉反馈获得的滑动控制效率相当，并且在这样的任务中其明显优于开关滑动模态的效率。这些结果表明，建议的触觉反馈是一个很有前途的感觉方法，恢复稳定的掌握假肢应用。
Grasp stability in the human hand has been resolved by means of an intricate network of mechanoreceptors integrating numerous cues about mechanical events, through an ontogenetic grasp practice. An engineered prosthetic interface introduces considerable perturbation risks in grasping, calling for feedback modalities that address the underlying slip phenomenon. In this study, we propose an enhanced slip feedback modality, with potential for myoelectric-based prosthetic applications, that relays information regarding slip events, particularly slip occurrence and slip speed. The proposed feedback modality, implemented using electrotactile stimulation, was evaluated in psychophysical studies of slip control in a simplified setup. The obtained results were compared with vision and a binary slip feedback that transmits on-off information about slip detection. The slip control efficiency of the slip speed display is comparable to that obtained with vision feedback, and it clearly outperforms the efficiency of the on-off slip modality in such tasks. These results suggest that the proposed tactile feedback is a promising sensory method for the restoration of stable grasp in prosthetic applications.