Earlier quoted context omitted.
I agree. Also, especially in the extremely crowded and noisy context - what would have been the chances to have the demo working so well? In fact, even if the robots worked very well autonomously, you would still have wanted a way to ensure that the demo is successful - the same way Steve Jobs did with the iPhone demo, Larry Ellison did with the Oracle servers demo, etc. So many stories like that in the history of fa…
> these are all AI issues (as opposed to mechanical ones) Actuation is still a massive problem in humanoid robotics. We have over 650 muscles. A humanoid today can't even approximate that. Sure, a robot might not need that many actuators to be extremely useful. However, to be general enough to be able to interact with any human environment, the number of required actuators will not be trivial. Add to that gearing, co…
- Small, powerful 3-phase servomotors are cheap and easy to obtain. Mass production of drone motors has advanced small motor technology considerably. Tiny motors use to be either toy-grade junk or expensive Swiss precision. That's improved.
- Motors with built-in encoders are, at last, available. Encoders used to be fragile plastic boxes stuck on the end of the motor. Also, thermal sensing inside the motor is common, so you can tell if you're overheating it.
- Permanent magnets are small and powerful, and have such high coercitivity that you don't have to worry about demagnetizing them if you over-drive the motor. The main limit on motor power is cooling. You can way overdrive a motor momentarily, like muscles.
- Motor controllers are now small and cheap, They cost about $1000 per motor two decades ago. The power semiconductors are small. Controllers can be programmed to use very high power levels briefly, monitoring thermal sensors.
It would be nice to have good linear actuators. Linear motors do exist, but never really became a big thing.