Derek Fan

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M.S. in Mechanical Engineering • Carnegie Mellon University

I’ve worked at every level of the robot control stack, ranging from low-level motor drivers to high-level planning and policy training. My experience spans deep/reinforcement learning, trajectory optimization, CUDA programming, and performant C++ control code across quadrupeds, self-driving cars, surgical robots, and drones.

I’m advised by Prof. Aaron Johnson at the Robomechanics Lab. Right now, I’m researching differentiable-sim-based reinforcement learning for locomotion and manipulation, imitation learning for high-performance torque policies, and uncertainty quantification for world models.

previous role

  • 08/25 — 01/26

    San Jose, CA

    Motion Planning & Controls Intern
    Audi of America, Audi Automated Driving Development
    • Implemented sampling-based MPC using CUDA and deployed on test drives.
    • Added multi-threaded action scheduling for more consistent control signals.
    • Designed a novel low-frequency MPPI algorithm for smoother, safer planning.

project highlights

  1. assets/img/publication_preview/fast-uncertainty-aware-model-based-reinforcement-learning.png
    Fast Uncertainty-Aware Model-Based Reinforcement Learning
    Evidential deep learning enables single-forward-pass uncertainty quantification. This is useful for uncertainty-aware model predictive control of world models, where typical ensembling methods may be too expensive to run in real time.
  2. assets/img/publication_preview/generative-modeling-fluid-dynamics.png
    Generative Modeling for Fluid Dynamics Simulation
    Fluid dynamics are expensive to simulate, so we turn to neural surrogates. Image generation methods such as diffusion and flow matching are appealing since fluid states act as 2D images.
  3. assets/img/publication_preview/heuristic-admissible-hybrid-ilqr.png
    Heuristic-Admissible Hybrid iLQR using Multiple Shooting
    Augmenting the standard hybrid iLQR algorithm with multiple shooting enables more informative initial guesses for contact-rich planning.

selected publications

  1. efficient-uav-trajectory-optimization.png
    Efficient Estimation of Relaxed Model Parameters for Robust UAV Trajectory Optimization
    Derek Fan and David A. Copp
    In 2025 IEEE Conference on Technologies for Sustainability (SusTech), 2025