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Tagged “electric motors”
2 articles

Brushless Motors: Why Kt and Ke Are the Same Number
A brushless motor datasheet lists its torque constant and its back-EMF constant separately. In SI units they are identical, and conservation of energy is the reason.

Motor Sizing: The Two Numbers That Catch People Out
Steady-state torque is the easiest part of a motor specification to get right. Inertia ratio and duty cycle are where the expensive mistakes actually live.