Robotics & Control

Intermediate

DC Motor Torque

Torque of a DC motor is proportional to current.

Formula

\tau = k_t I

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Variables

τTorque (N·m)

k_tTorque constant (N·m/A)

ICurrent (A)

Example

k_t=0.05, I=10 A: τ = 0.5 N·m

Did You Know?

Because torque tracks current, measuring a robot's motor current reveals how hard it's pushing.

robotics motor torque

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