Related Experiment Video
Updated: Apr 28, 2026
08:56
Clinical Assessment of Spatiotemporal Gait Parameters in Patients and Older Adults
Published on: November 7, 2014
13.8K
A type-2 fuzzy inference-based approach enables walking speed estimation that adapts to inter-individual gait
Linrong Li1, Wenxiang Liao1, Hongliu Yu1
1Institute of Rehabilitation Engineering and Technology, 47863 University of Shanghai for Science and Technology , Shanghai, China.
Biomedizinische Technik. Biomedical Engineering
|November 25, 2024
Summary
This study introduces a novel method for accurate walking speed estimation by analyzing thigh movement. The system adapts to individual gait patterns, improving control for rehabilitation robots and prostheses.
Area of Science:
- Biomechanics
- Robotics
- Signal Processing
Background:
- Walking speed is regulated by step frequency (SF) and stride length (SL).
- Existing speed estimation methods often overlook these individual regulatory strategies.
- Adaptation to diverse gait patterns is crucial for effective human-robot interaction.
Purpose of the Study:
- To develop an accurate walking speed estimation method.
- To create a system that adapts to inter-individual speed regulation strategies.
- To enable gait-independent speed estimation.
Main Methods:
- Extracted thigh features using a single thigh-mounted IMU.
- Employed an interval type-2 fuzzy inference system to infer speed regulation intentions.
- Validated the method with five subjects on a treadmill using varied speeds and gait patterns.
Main Results:
- Achieved an overall root mean square error (RMSE) of 0.0704 ± 0.0087 m/s for speed estimation.
- Maintained a low RMSE (≤ 0.074 ± 0.005 m/s) across different gait patterns.
- Demonstrated robustness to variations in limb length and gait habits.
Conclusions:
- The proposed method offers high-accuracy walking speed estimation.
- It adapts to various foot-limb (FL) combinations without individual tuning.
- Potential applications include intuitive speed-adaptive control for rehabilitation robots and lower limb prostheses.
Related Concept Videos
01:15Instantaneous Velocity - I
26.3K
The average velocity during a time interval cannot tell us how fast or in what direction a particle is moving at any given time during the interval. To calculate this, it is important to know the instantaneous velocity, which is the velocity at a specific instant of time or at a specific point along the path. Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity vx of an object is the limit of the average...
26.3K
01:10Instantaneous Velocity - II
12.4K
Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of displacement with respect to time. Like average velocity, the instantaneous velocity is a vector with the dimensions of length per unit time. Instantaneous velocity can have both positive and negative values. The instantaneous velocity can be...
12.4K
01:24Relative Motion Analysis - Velocity
973
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...
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...
973
01:10Relative Motion Analysis - Acceleration
1.1K
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...
1.1K
01:31Classification of Systems-II
646
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
646
01:29Distance Problem
216
When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
216