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Related Concept Videos

Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
Orthogonal Trajectories01:26

Orthogonal Trajectories

Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
Relative Motion Analysis using Rotating Axes - Acceleration01:22

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Relative Velocity in One Dimension01:10

Relative Velocity in One Dimension

The understanding of the concept of reference frames is essential to discuss relative motion in one or more dimensions. When we say that an object has a certain velocity, we must state the velocity with respect to a given reference frame. In most examples, this reference frame has been Earth. For instance, if a statement reads that a person is sitting in a train moving at 10 m/s east, then it implies that the person on the train is moving relative to the surface of Earth at this velocity,...
Relative Motion Analysis - Acceleration01:10

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A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
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Relative Velocity in Two Dimensions

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Related Experiment Video

Updated: May 25, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Velocity-dependent reference trajectory generation for the LOPES gait training robot.

N Tufekciler1, E H F van Asseldonk, H van der Kooij

  • 1Department of Biomechanical Engineering, MIRA, University of Twente, Enschede, The Netherlands. a.n.tufekciler@utwente.nl

IEEE ... International Conference on Rehabilitation Robotics : [Proceedings]
|January 26, 2012
PubMed
Summary
This summary is machine-generated.

This study presents a method for creating personalized walking trajectories for gait rehabilitation robots, enabling neurologically injured patients to train with natural gait patterns. The approach shows promise for improving patient recovery through adaptive robotic assistance.

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Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
06:54

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder

Published on: March 4, 2018

Related Experiment Videos

Last Updated: May 25, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
06:54

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder

Published on: March 4, 2018

Area of Science:

  • Robotics
  • Neurorehabilitation
  • Biomechanics

Background:

  • Neurological injuries often impair gait, necessitating effective rehabilitation strategies.
  • Robotic-assisted gait training offers a promising avenue for recovery.
  • Personalized and adaptive training trajectories are crucial for optimizing patient outcomes.

Purpose of the Study:

  • To assess the feasibility of generating velocity-dependent trajectories for gait rehabilitation.
  • To develop a method for creating patient-specific gait patterns for robotic training.
  • To evaluate the effectiveness of these trajectories in a robotic system.

Main Methods:

  • Reference gait trajectories were derived from treadmill walking data.
  • Key gait parameters were extracted and their velocity dependency analyzed using regression.
  • Spline interpolation was used to generate continuous gait patterns (position, velocity, acceleration).
  • A feedforward controller was integrated with an impedance controller for robot control.
  • The system was implemented on the LOPES gait rehabilitation robot and tested on healthy subjects.

Main Results:

  • Healthy subjects could walk naturally using the generated reference trajectories within the LOPES robot.
  • The approach successfully created velocity-dependent gait patterns.
  • The integration of controllers allowed for naturalistic movement simulation.

Conclusions:

  • The developed approach for generating velocity-dependent trajectories is feasible for gait rehabilitation.
  • Further technical refinement and clinical trials with both healthy and impaired individuals are needed.
  • Successful clinical transferability to aid neurologically injured patients requires additional validation.