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相关概念视频

Frictional Force01:07

Frictional Force

8.2K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
8.2K
Power Expended by a Constant Force00:57

Power Expended by a Constant Force

7.8K
The relationship between work done and the time taken to do it can be explained using the concept of power. For example, several sprinters in a race may have the same velocity when they reach the finish line, therefore doing the same amount of work, but the winner does it in the least amount of time. Thus, power is defined as the rate of doing work. Since work can vary as a function of time, the average power is defined as the work done during a time interval, divided by the time interval.
7.8K
Two-Dimensional Force System01:20

Two-Dimensional Force System

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A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
1.9K
Three-Dimensional Force System01:30

Three-Dimensional Force System

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
3.2K
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

949
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
949
Central-Force Motion01:17

Central-Force Motion

963
The central force system operates by exerting a force on an object directed towards a fixed point, typically the origin, with the force magnitude determined by the object's distance from this fixed point. In the context of an object with mass 'm,' polar coordinates are employed to express the equation of motion. Notably, the azimuthal component of force is nonexistent in this system. A comprehensive rewrite and integration of this equation reveal that the product of the squared...
963

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相关实验视频

Updated: May 5, 2026

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
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ForceCtrl:用用户定义的捏力进行手动射线播放,用于控制-显示增益应用程序.

Seo Young Oh, Junghoon Seo, Juyoung Lee

    IEEE transactions on visualization and computer graphics
    |December 23, 2025
    PubMed
    概括
    此摘要是机器生成的。

    ForceCtrl提高了3D手射线投射精度,使用捏力调整控制显示器 (CD) 增益. 这种新的技术提高了准确性,并减少了AR/VR交互的用户工作负载.

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    相关实验视频

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    Measurement of Spatial Stability in Precision Grip
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    科学领域:

    • 人与计算机的交互
    • 虚拟现实 虚拟现实 虚拟现实
    • 增强现实是一种增强现实.

    背景情况:

    • 目前的3D手工射线投射技术由于人类运动控制而面临精度的限制.
    • 现有的方法经常与遥远的目标和高难度的任务作斗争,导致错误和增加用户工作负载.

    研究的目的:

    • 介绍ForceCtrl,这是一种新的3D手射线投射技术,可以提高指针精度.
    • 为了研究使用用户定义的力,通过表面电肌学 (sEMG) 检测,用于动态控制显示器 (CD) 增益调整.
    • 评估不同CD增益策略在提高目标选择和放置精度方面的有效性.

    主要方法:

    • 开发了ForceCtrl,这是一个无关目标的射线投射技术,根据检测到的力 (sEMG) 调整CD增益.
    • 实施了三种不同的CD增益策略,用于用户交互.
    • 进行了涉及目标选择和放置任务的用户研究,以比较不同策略的性能.

    主要成果:

    • ForceCtrl显著减少了选择错误和位置动,特别是在遥远的目标.
    • 该系统表明,在高难度任务中,用户的工作量减少了.
    • 用户定义的挤压力有效地实现了CD增益的动态激活/禁用.

    结论:

    • 应用基于用户定义的捏压力进行CD增强调整,可以有效地提高手光投射精度在AR/VR中.
    • ForceCtrl提供了一个强大的输入模式,用于精确的交互,克服人类运动能力的局限性.
    • 这些发现表明了开发更直观,更准确的AR/VR交互技术的有希望的方向.