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Instantaneous Center of Zero Velocity01:20

Instantaneous Center of Zero Velocity

General plane motion, often observed in a rolling wheel, refers to a type of movement where the wheel is simultaneously rotating and translating. This complex motion can be understood by breaking it down into individual components.
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Inertial Frames of Reference01:03

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Newton’s first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So, by definition, an inertial reference frame is a reference frame where Newton's first law holds valid. Newton's first law applies to objects with constant...
Relative Velocity in One Dimension01:10

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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,...
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Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
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Published on: April 13, 2016

A zero velocity detection algorithm using inertial sensors for pedestrian navigation systems.

Sang Kyeong Park1, Young Soo Suh

  • 1Department of Electrical Engineering, University of Ulsan, Namgu, Ulsan 680-749, Korea. damiro76@hotmail.com

Sensors (Basel, Switzerland)
|December 14, 2011
PubMed
Summary
This summary is machine-generated.

Reliable pedestrian navigation relies on accurate zero velocity detection. This study introduces a new algorithm using a single gyroscope and a Markov model for improved zero velocity interval detection in inertial navigation systems.

Keywords:
Kalman filterhidden Markov modelpedestrian navigation systemzero velocity update method

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Area of Science:

  • * Pedestrian Navigation Systems
  • * Inertial Navigation Algorithms
  • * Sensor Data Processing

Background:

  • * Pedestrian navigation systems compute position using inertial navigation algorithms.
  • * Zero velocity updating is crucial for these algorithms, requiring reliable detection of zero velocity intervals to reset velocity errors.
  • * Current methods for zero velocity detection can be unreliable, impacting navigation accuracy.

Purpose of the Study:

  • * To propose a novel and more reliable zero velocity detection algorithm for pedestrian navigation systems.
  • * To enhance the accuracy of inertial navigation by improving the detection of zero velocity intervals.
  • * To reduce reliance on multiple sensor inputs by utilizing a single gyroscope value.

Main Methods:

  • * Development of a new zero velocity detection algorithm.
  • * Utilization of a single gyroscope value as input.
  • * Construction of a Markov model based on segmented gyroscope outputs, rather than direct gyroscope readings.

Main Results:

  • * The proposed algorithm demonstrates increased reliability in detecting zero velocity intervals.
  • * Using a Markov model derived from segmented gyroscope data improves detection accuracy compared to direct sensor output analysis.
  • * The method successfully integrates into inertial navigation algorithms for pedestrian positioning.

Conclusions:

  • * The novel zero velocity detection algorithm offers a more robust solution for pedestrian navigation.
  • * Employing a Markov model with segmented gyroscope data enhances the reliability of zero velocity updating.
  • * This approach contributes to more accurate and dependable pedestrian positioning systems.