Robotics Notebooks
A knowledge map of robotics that enters through motion control and grows toward the full stack.
Visit Website →Chong Liu
Hi there! I'm Chong Liu, a Robotics Engineer based in Shenzhen, China. I hold a master's degree in Mechanical Engineering from Columbia University, specializing in Robotics and Control.
I'm currently focused on humanoid robot reinforcement learning and imitation learning for motion control, working at BridgeDP Robotics Co., Ltd. to deliver customized motion control solutions for client humanoid robots.
I'm fascinated by designing and building advanced, life-like robots, and applying robotics technology to help people in need. This webpage contains my project documentation and resources to start on robotics from scratch. Together, let's make the world a better place!
Projects
Robot Learning Paper Notebooks
Reading notes on humanoid robot learning papers, from bipedal locomotion to whole-body control.
View Notes →
Robot Description Gallery Online
Browse and compare open robot models in the browser, or open your own description files.
Robot Joint Order Check Tool Online
One URDF, many simulators: see where the joint order differs and get the index remap.
Robot Retarget Online
Retarget BVH mocap onto robots in the browser, with GMR ported to MuJoCo WebAssembly.
Robot Learning IO Board Online
A node graph of what a humanoid policy observes, outputs and is rewarded for, traced to the upstream code.
Robot Learning Sim2Sim Online
Run trained humanoid RL policies live in the browser, with no local install.
View Demo →
Proportional Control Valve
Designed and built a proportional valve for pneumatic systems, from CAD and tolerance analysis to testing.
View Project →Research experience
Publications listed in reverse chronological order. See Google Scholar for citation details.
Fourier Analysis Guided Cable Actuator Design for Coordinated Walking Assistance
Cable-driven exoskeletons add minimal inertia and restrictions to the user's leg while still providing feedback and quantitative measures of the user's performance. This work proposes a Fourier analysis guided approach to reduce the number of actuated motors needed for cable-driven exoskeletons in walking assistance.
Google Scholar →Machining of High Aspect Ratio Micro-Holes on Titanium Alloy Using Silver Nano Powder Mixed Micro EDM Drilling
Investigates the feasibility of machining high aspect ratio micro-through holes in Ti-6Al-4V titanium alloy using micro-EDM with silver nanopowder mixed dielectric for aerospace turbine blade cooling applications.
Google Scholar →Investigating the Micro-EDM Machinability of Bulk Metallic Glass in Micro-EDM Drilling
Evaluates the micro-EDM machinability of Bulk Metallic Glass (BMG), assessing material removal rate, tool wear rate, surface quality, and dimensional accuracy for high aspect ratio micro-hole fabrication.
Google Scholar →Effect of Conductive Coatings on Micro-Electro-Discharge Machinability of Aluminum Nitride Ceramic Using On-Machine-Fabricated Microelectrodes
Investigates the feasibility of machining micro-holes on non-conductive Aluminum Nitride ceramics using the "Assistive Electrode" micro-EDM process with multi-layer conductive coatings.
Google Scholar →Experimental Investigation and Numerical Simulation of Micro-EDM of Bulk Metallic Glass with Focus on Crater Sizes
Investigates the machinability of Bulk Metallic Glass using micro-EDM, evaluating crater sizes and overcut of micro-holes through experimental investigation and numerical simulation.
Google Scholar →Powder Mixed Micro Electro Discharge Machining of Aluminium Nitride Ceramic
Explores the Assisting Electrode Method as a solution for machining non-conductive Aluminum Nitride ceramics using powder mixed micro-EDM process.
Google Scholar →Optimization of Electric Discharge Machining Based Processes
Comprehensively discusses optimization techniques — Taguchi robust design, grey relational analysis, genetic algorithm, and neural network — for Electric Discharge Machining based processes.
Google Scholar →Micro-Wire-EDM
Provides a concise overview of the micro-wire-electro-discharge machining (micro-WEDM) process, covering process mechanism, system components, parameters, variants, and innovative applications.
Google Scholar →Family
Marriage Registration
On this meaningful day, I registered my marriage with my beloved wife.
