Bruce Lee's Notes

Systems, programming, and engineering practice

path_planner: Graph Model, BFS, and Route Stitching

ROS2

path_planner: Graph Model, BFS, and Route Stitching The current path_planner gives fleet_manager a route that is simple, stable, and explainable enough to close the task assignment loop. The planne......

Posted by Bruce Lee on 2025-03-15

Robotics

fleet_manager: Task Queue, Planner Dependency, and Assignment State Retention

ROS2

fleet_manager: Task Queue, Planner Dependency, and Assignment State Retention At this stage, fleet_manager is not an advanced scheduler. Its role is still the most important middle link in the V1 c......

Posted by Bruce Lee on 2025-03-10

Robotics

Unit Impulse and Unit Step in Continuous and Discrete Time

Signals and systems

Relationship Between Impulse and Step Signals In discrete time, the unit impulse is the first difference of the unit step: $ \delta[n] = u[n] - u[n-1] $ In continuous time, the unit impulse is the ......

Posted by Bruce Lee on 2025-01-08

Mathematics

Beyond Technical Depth: What Else Makes a Capable Engineer?

Keep working for a better life

About Me Welcome to my blog! This is where I collect my observations and notes on programming and technology. The main subjects range from implementation details to broader ideas about programming.......

Posted by Bruce Lee on 2024-10-10

Reflections

Task Contexts, Stack Initialization, and Context Switching

Engineering

About Me Welcome to my blog! This is where I collect my observations and notes on programming and technology. The main subjects range from implementation details to broader ideas about programming.......

Posted by Bruce Lee on 2024-10-01

Operating Systems