Simulating Riding Dynamics toward Developing a KinematicallyRealistic Mechanical Horse for Hippother - PowerPoint PPT Presentation
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Simulating Riding Dynamics toward Developing a KinematicallyRealistic Mechanical Horse for Hippother
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'The use of a horse as a therapy instrument to treat patients with ... Multiple Sclerosis (MS) Down Syndrome. Developmental delays. Traumatic brain injuries ... – PowerPoint PPT presentation
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Title: Simulating Riding Dynamics toward Developing a KinematicallyRealistic Mechanical Horse for Hippother
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Simulating Riding Dynamics toward Developing a
Kinematically-Realistic Mechanical Horse for
Hippotherapy Research
- Rhett Rigby
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What is Hippotherapy?
- The use of a horse as a therapy instrument to
treat patients with many different forms of
neuromusculoskeletal disability - Main objective to improve neurological function
and sensory processing - Used to treat
- Cerebral Palsy (CP)
- Multiple Sclerosis (MS)
- Down Syndrome
- Developmental delays
- Traumatic brain injuries
- Spinal cord injuries
3
How Does Hippotherapy Work?
- Mechanics
- Horse motion drives body through patterns it
cannot perform itself - Motions mimic those of healthy human gait
- Tunes joints, muscles, and neural pathways for
these natural movement patterns - Psychosocial influences
- Emotional interaction with horse encourages
patient and stimulates good mood
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Purpose
- Until very recently, little research done to
investigate the efficacy of hippotherapy - To facilitate research and increase access to
hippotherapy, Dr. Garner and I are planning the
construction of a mechanical horse - Purpose of this study was to compute the types of
loads a mechanical horse needs to generate in
order to simulate the realistic motion of a horse
with a child rider
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Methods
- Three-dimensional computer simulations were
performed to model the dynamic interactions
between a saddle and a rider - A dynamic model that consisted of four rigid
bodies was created - The saddle and lower torso of the rider
- The riders abdomen
- The riders upper torso, including the chest and
arms - The riders head, including the neck, cranium,
and helmet
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Methods
- An inverse dynamics approach was used
- Inputs
- Three translations and three rotations
- Velocities and accelerations
- Gravity
- The mass and moments of inertia of each body
- Outputs
- The active forces of the horse
- The passive internal forces and moments
experienced by the rider
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Animation
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Results
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Discussion
- Model Significance
- Fairly realistic model of a horse and rider
dynamics - Results will guide construction of a mechanical
horse - A mechanical horse will facilitate research and
assist physical therapy - Model limitations
- Model only analyzes one period of a horses gait
- Horse walks at different speeds
- Horse may correct itself to prevent the rider
from falling off
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Future Studies
- Longer trial-run area
- More cameras need to be used to capture longer
trial runs, both in time and distance - More realistic inertial inputs to the model
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