Xiaomi’s Humanoid Drummer Beats Expectations



When Xiaomi introduced its CyberOne humanoid robotic a few months again, it wasn’t solely clear what the corporate was really going to do with the robotic. Our guess was that somewhat than pretending that CyberOne was going to have some type of sensible goal, Xiaomi would use it as a approach of exploring potentialities with know-how which will have helpful purposes elsewhere, however there have been no express ideas that there can be any precise analysis to come back out of it. In a pleasant shock, Xiaomi roboticists have taught the robotic to do one thing that’s, if not precisely helpful, not less than loud: to play the drums.


The enter for this efficiency is a MIDI file, which the robotic is ready to parse into drum beats. It then generates song-length sequences of coordinated whole-body trajectories that are synchronized to the music, which is difficult as a result of the top effectors have to ensure to actuate the drums precisely on the beat. CyberOne does a reasonably first rate job even when it’s going forwards and backwards throughout the drum equipment. That is maybe not tremendous cutting-edge humanoid analysis, nevertheless it’s nonetheless attention-grabbing to see what an organization like Xiaomi has been as much as. And to that finish, we requested Zeyu Ren, a senior {hardware} engineer on the Xiaomi Robotics Lab, to reply a few questions for us.

IEEE Spectrum: So why is Xiaomi engaged on a humanoid robotic, anyway?

Zeyu Ren: There are three the explanation why Xiaomi is engaged on humanoid robots. The primary purpose is that we’re seeing an enormous decline within the labor power in China, and the world. We’re engaged on changing the human labor power with humanoid robots though there’s a lengthy approach to go. The second purpose is that we imagine humanoid robots are probably the most technically difficult of all robotic kinds. By engaged on humanoid robots, we will additionally use this know-how to unravel issues on different robotic kinds, akin to quadruped robots, robotic arms, and even wheeled robots. The third purpose is that Xiaomi needs to be probably the most technically superior firm in China, and humanoid robots are attractive.

Why did you select drumming to exhibit your analysis?

Ren: After the official launch of Xiaomi CyberOne on August 11, we bought numerous suggestions from the general public who didn’t have a background in robotics. They’re extra fascinated by seeing humanoid robots doing issues that people can not simply do. Truthfully talking, it’s fairly tough to seek out such eventualities, since we all know that the primary prototype of CyberOne is much behind people.

However at some point, one among our engineers who had simply begun to play drums prompt that drumming could also be an exception. She thought that in comparison with rookie drummers, humanoid robots have extra benefits in hand-foot coordinated movement and rhythmic management. All of us thought it was a good suggestion, and drumming itself is tremendous cool and attention-grabbing. So we select drumming to exhibit our analysis.

What was probably the most difficult a part of this analysis?

Ren: Essentially the most difficult a part of this analysis was that when receiving the lengthy sequences of drum beats, CyberOne must assign sequences to every arm and leg and generate steady collision-free whole-body trajectories throughout the {hardware} constraints. So, we extract the fundamental beats and construct our drum beat movement trajectory library offline by optimization. Then, CyberOne can generate steady trajectories in step with any drum rating. This strategy provides extra freedom to CyberOne taking part in drums, and is simply restricted by the robotics functionality.

What various things do you hope that this analysis will assist your robotic do sooner or later?

Ren: Drumming requires CyberOne to coordinate whole-body motions to attain a quick, correct, and enormous vary of motion. We first wish to discover the restrict of our robotic when it comes to {hardware} and software program to offer a reference for the next-generation design. Additionally, by means of this analysis, we’ve shaped a whole set of automated drumming strategies for robots to carry out completely different songs, and this expertise additionally helps us to extra rapidly notice the event of different musical devices to be performed by robots.

What are you engaged on subsequent?

Ren: We’re engaged on the second technology of CyberOne, and hope to additional enhance its locomotion and manipulation capability. On the {hardware} degree, we plan so as to add extra levels of freedom, combine self-developed dexterous arms, and add extra sensors. On the software program degree, extra sturdy management algorithms for locomotion and imaginative and prescient can be developed.

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