3 ms·
The 8Nm/kg is impressive for the direct driver servo. It's still however a long way off from the 43.3Nm/kg gained by adding a gear box. Direct drive motors have
by Scouttman 2y ago
The 8Nm/kg is impressive for the direct driver servo. It's still however a long way off from the 43.3Nm/kg gained by adding a gear box. Direct drive motors have other advantages such as better torque control and no backlash but out side of very novel motor design or making motor diameters impactical it's hard to beat the torque density of a gearbox. Maybe one day.
- Animats 2y agoWatching those direct-drive robots jump and land smoothly is impressive. No problem with shock loads. They look like they're on springs, but there are no springs; it's all magnetic fields in the motor. With good temperature monitoring and over-speced MOSFETS, those direct drive motors can probably be way overdriven for a few hundred milliseconds. That's probably the future. You don't need that extra power all that often, but sometimes you do.