Topic
Stair climbing
About: Stair climbing is a research topic. Over the lifetime, 1610 publications have been published within this topic receiving 30504 citations.
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TL;DR: For instance, this paper found that tall and short male observers from three age groups (9 years, 12 years, and adults) judged from projected images whether they could climb steps of different heights.
Abstract: Perceptual judgments relating to stair climbing were examined in two experiments. In the first, tall and short male observers from three age groups (9 years, 12 years, and adults) judged from projected images whether they could climb steps of different heights. They also rated the difficulty of doing so, and adults made certainty ratings about their judgments. Both adults and children perceived that higher steps were less climable and more difficult to climb than lower ones but, unexpectedly, there was no difference between their judgments according to standing height. Smaller intervals between steps were used in the second experiment with 12-year-old boys who made perceptual judgments about real steps either after attempting to climb them or without such experience. Although there was a general tendency to overestimate the height of steps that could be climbed, practice in climbing reduced this tendency. It was concluded that feedback from performance is one of several possible factors that cont...
11 citations
03 Oct 2005
TL;DR: An algorithm that generates extended task of humanoid robot to endure a large variety of performance by recomposing of two fundamental tasks is proposed and appropriate task transition operation for phase sequence method was applied.
Abstract: A goal of this work is to propose an algorithm that generates extended task of humanoid robot to endure a large variety of performance. In this approach, it is likely that using "task" library, which is constructed by previous task is effective method to generate extended task of humanoid robot according to environment change. It could be realized by method adopting "phase" transition, defined as "phase sequence". Also, it would realize to plan a task that required for humanoid robot in environment change using re-composition and re-using of constructed phase without motion experiments and planning from scratch. We have been applied a previous phase of step ascending and walking task based on strategy of actual motion for humanoid robot task, stair climbing. In the connection of two tasks, we adopted third-order bezier curve, which can be transformed desired trajectory using modifying its control parameters. Furthermore, appropriate task transition operation for phase sequence method was applied by re-composition of phases as variation of designated environments. As a result, extended task, stair climbing, was realized by recomposing of two fundamental tasks. In conclusion, a proposed task generation algorithm was verified.
11 citations
TL;DR: Comparing the differences in kinematics and muscle activations during climbing on regular stairs and a stairmill would provide additional insights into the design of future rehabilitation systems and to interpret human data obtained from stairmills.
11 citations