Investigation of hand posture during reach and grasp for ergonomic applications
Investigation of hand posture during reach and grasp for ergonomic applications
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研究人体工程学应用中伸手和抓握过程中的手部姿势
DOI：
--
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Sungchan Bae
中科院分区：
文献类型：
--
作者：
Sungchan Bae
新的方法被开发来研究对象和任务属性的手的姿态和手指运动的预测在达到和把握的效果。三项针对年轻人的研究结果表明：（1）在伸手和抓握过程中捏圆柱形物体的手指运动是使用选定的空间（初始，最大打开，最终姿势）和时间参数（延迟和总时间）作为物体属性（例如，对象大小和方向、到达距离）。这些参数被用来预测手指运动，使用约束四阶多项式函数（R范围从0.54到1）。(2)两个新的指标，开放性和平坦度，这分别代表指尖定位和手指形状，被用来描述在达到和把握的手姿态的对象形状的影响。物体的长宽比和横截面形状引起手部姿势的变化。捏长物体（例如，圆柱体）导致比捏对称物体（例如，球体）。用边缘夹住物体（例如，立方体）比具有弯曲表面的物体（例如，球体）。(3)不同的手的姿势，观察到达到和捏比达到和权力握。使用动力抓握涉及比捏更大的手打开（手指关节角度的平均差异范围为1.8 °至11.9°），并且抓握类型的影响发生在MCP关节比PIP和DIP关节更早的达到。总之，我们的结论是，这些方法可以用来可靠地预测手指运动选定的工作，并估计肌腱偏移研究肌肉骨骼疾病的手。
New methods were developed to study the effect of object and task attributes on prediction of hand posture and finger motion during reach and grasp. The results of three studies in young adults showed: (1) Finger motion during reach and grasp for pinching cylindrical objects was described using selected spatial (initial, maximum open, final postures) and temporal parameters (delay and total times) as a function of object properties (e.g., object size and orientation, reach distance). Those parameters were used to predict finger motion using a constrained fourth order polynomial function (R ranging from 0.54 to 1). (2) Two new metrics, openness and flatness, which represent fingertip positioning and finger shape, respectively, were used to describe the effect of object shape on hand posture during reach and grasp. Object aspect ratio and cross-sectional shape caused changes in hand posture. Pinching long objects (e.g., cylinders) resulted in up to 25% greater hand opening than pinching symmetric objects (e.g., spheres). Pinching objects with edges (e.g., cubes) resulted in up to 12% greater hand opening than objects with curved surfaces (e.g., spheres). (3) Different hand postures were observed for reach and pinch than for reach and power-grip. Use of power grasp involved greater hand opening than pinch (the mean difference of finger joint angles ranges from 1.8 to 11.9°), and the effect of grasp type occurred from earlier in the reach for the MCP joints than for the PIP and DIP joints. In summary, we conclude that these methods can be used to reliably predict finger motion for selected jobs and to estimate tendon excursion for studying musculoskeletal disorders in the hand.
基于姿势的运动规划：在抓取中的应用。
影响因子：
5.4
作者：
Rosenbaum,DA;Meulenbroek,RJ;Vaughan,J;Jansen,C
通讯作者：
Jansen,C
通过控制手指跨度和手形来匹配物体大小。
DOI：
10.1080/08990229771060
发表时间：
1997
期刊：
Somatosensory & motor research.
影响因子：
--
作者：
Santello,M;Soechting,JF
通讯作者：
Soechting,JF
影响因子：
2.5
作者：
Kamper, DG;Cruz, EG;Siegel, MP
通讯作者：
Siegel, MP