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This project explores how different cost functions affect simulations for designing assistive devices, particularly focusing on human walking simulations with OpenSim Moco. It underscores the importance of carefully selecting cost functions, as they significantly influence the accuracy and effectiveness of the design outcomes.

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⚙️ Cost Function Sensitivity in Predictive Simulations for Assistive Device Design


📜 Summary

This project investigates the impact of cost functions on predictive simulations used in the design of assistive devices, with a focus on human walking simulations in OpenSim Moco. The study explores how choices in cost functions can influence simulation outcomes, which is critical when designing devices such as exoskeletons or prostheses. By examining the sensitivity of key design parameters, like torque and power requirements, to different cost functions, this project aims to improve the accuracy and reliability of assistive device simulations.

💡 Significance: The sensitivity of predictive simulations to cost functions plays a crucial role in determining the performance of assistive devices, making it essential to evaluate these functions thoroughly during the design process.


🎯 Objective

To explore how varying cost functions impact the results of predictive simulations in assistive device design.


🛠 Skills Required

Technical Skills

OpenSim Optimization Musculoskeletal Modeling Data Analysis

  • Musculoskeletal Modeling
  • Optimization Techniques
  • Biomechanics Simulation Tools (OpenSim Moco)
  • Data Analysis and Interpretation

Soft Skills

  • 🧠 Problem-Solving & Analytical Thinking
  • 🔍 Attention to Detail

📊 Deliverables

Key Outputs

  • 🧩 Predictive Simulation Models: Models simulating human gait and assistive devices.
  • 📈 Comparative Analysis: Outcomes based on different cost functions.
  • 📊 Reports on Device Parameters: Including torque and power requirements.
  • 🎨 Visualizations: Gait patterns and simulation results.

🔍 Additional Information

  • Software Used: OpenSim Moco for predictive simulations.
  • Model Details: Bilaterally symmetric models assuming planar motion.
  • Device Comparisons: Includes assistive devices for the hip, knee, and ankle.
  • Future Work: This study can be extended to analyze gait under different conditions, such as varying speeds and inclines.

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This project explores how different cost functions affect simulations for designing assistive devices, particularly focusing on human walking simulations with OpenSim Moco. It underscores the importance of carefully selecting cost functions, as they significantly influence the accuracy and effectiveness of the design outcomes.

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