Hi! I'm Bill

bfan@utexas.edu

I’m a 2nd year PhD student at the University of Texas, Austin, advised by Dr. Lillian Chin as a member of MERGe Lab. I am a National Science Foundation (NSF) Graduate Research Fellowship Fellow.

My research spans robotics tactile sensing, design, and accessibility. For robots, I am currently working on computational tools for optimizing tactile sensor designs. For design and accessibility, I am co-designing university campus accessibility solutions that center the knowledge disabled people already have and use.

Outside of research, I have industry experience working on SLAM at Dusty Robotics and microfluidics automation at XGenomes. When I’m not working, I like to take care of my house plants, cook, and read :)

Publications

BathMap: Designing a Platform For Mapping University Bathroom Accessibility

Bill Fan*, Stephanie Wang*, Shaini Nanayakkara, Min Kyung Lee, Lillian Chin, Earl Huff Jr.

Lack of information about bathroom access is a major pain point in disabled people’s access to public spaces — a problem known as the ‘bladder’s leash’. We designed a bathroom map platform that builds on a student organization’s participatory mapping activism and combines it with crowd-sourcing. We performed open-ended formative studies, and user-testing.

A Fast and Model Based Approach for Evaluating Task-Competence of Antagonistic Continuum Arms

Bill Fan, Jacob Roulier, Gina Olson

Determining whether a proposed continuum arm design can complete a specified task and load is computationally expensive due to the need for simulation. We introduce a novel method of analysis that eliminates the need for simulation, speeding up computation by 80x, and creates novel metrics for evaluating arm designs against tasks.

Linear Kinematics for General Constant Curvature and Torsion Manipulators

Bill Fan*, Farhan Rozaidi, Capprin Bass, Gina Olson, Melinda Malley, Ross L Hatton

Inspired by octopus arms, helically-wound muscles greatly increase continuum arm workspaces, but they are more difficult to model and control. We present a novel application of Lie theory to simplify the modeling of constant twist soft robots, and unify modeling across different designs. Won 3rd place best workshop poster.

Projects

Co-founding a soft-robotics research group

In my 3rd year I co-founded Twist Lab - a soft robotics research group with 10 students. As PM I was responsible for raising over $7,500 in lab funding from grants, supported projects in the design, control, and simulation of soft robotics, and helped students apply to fellowships.

Autonomous foiling of a Nacra 17

During my gap year before college, I built an autonomously hydrofoiling boat prototype at an early stage startup capable of multiple minutes of airtime. We added motorized hydrofoils with ROS controls to an existing boat hull, developed a simulation, and used it to implement a cascaded PID controller.

Design and control of a maglev system.

As the lead course assistant, I (re-)designed the final-project system for the Feedback Controls course at Olin, and created kits for all students. In the month-long project the students levitate a permanent magnet using an electromagnet and a hall-effect sensor. Gif by Krishna Suresh.

GPU Rendered Colloidal Glass Simulation

In my scientific computing class, I implemented a particle based model of the non-linear phase change of glass using Python. To render the results, I implemented a modern OpenGL GPU-programming shader pipeline, complete with a phong lighting model and full camera movement in 3D space.