Electric Driver Motor Sizer

Required Inputs

• Total mass
• Number of drive wheels
• Radius of wheel

Velocity Requirement

• Desired Linear Velocity

Torque Requirement

• Desired acceleration: use 0 to indicate stall torque
• Maximum incline: How steep of an incline do you expect

Operating time

• Desired operating time
• Efficiency (?) & percentage of time at various inclines

Outputs

Velocity

• Motor RPM

Torque

• Motor torque
  • This does NOT mean rated torque of the motor. This is just the amount of torque required to move the robot. Many motor ratings are placed in a spot where they can be used continuously until the lifetime of the motor has elapsed. In robotics we rarely have a robot at its rating at all times.

Operating time

• Watt-hour of battery