A 3kg DIY Collaborative Robot with P series actuators Can Become a Mini Generator

What happens to the voltage when a small collaborative robot runs at different speeds?
We built a 3kg DIY collaborative robot using our P Series harmonic joint modules and tested the instantaneous voltage during different motion speeds.

🔹 Hollow design for clean internal cable routing
🔹 P Series harmonic joint modules for compact and precise motion
🔹 During deceleration and high-speed movement, the motor can generate regenerative current due to back EMF
🔹 In certain operating conditions, the robot can literally behave like a small generator 

As the robot moves faster, the regenerative voltage can increase significantly. For high-speed applications, a braking/resistor discharge module is generally recommended to safely dissipate the regenerated energy and protect the drive system.
This is one of the interesting engineering challenges when building compact collaborative robots — the faster you move, the more attention you need to pay to regenerated energy!
✔ Built with P Series Harmonic Joint Modules
✔ Payload: 3kg
✔ High-speed motion & regenerative energy test
✔ Hollow cable-routing design