EML2322L Drive Wheel Motor Torque Calculations

EML2322L Drive Wheel Motor Torque Calculations - EML2322L -...

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EML2322L -- MAE Design and Manufacturing Laboratory Drive Wheel Motor Torque Calculations Reference Citation: White Hydraulics Drive Products When selecting a drive wheel motor for a mobile vehicle, a number of factors must be taken into account to determine the maximum torque required. The following example outlines one method of computing this torque. Sample vehicle design criteria: Gross Vehicle weight (GVW): 35 lb Weight on each drive wheel (WW): 10 lb Radius of wheel/tire (R w ): 4 in Desired top speed (V max ): 1.5 ft/sec Desired acceleration time (t a ): 1 sec Max incline angle ( α ): 2 degree Worst working surface: concrete (good) To determine max torque requirement of motor: To choose a motor(s) capable of producing enough torque to propel the vehicle, it is necessary to determine the total tractive effort (TE) requirement for the vehicle. To determine total tractive effort, the following equation can be used: TE [lb] = RR [lb] + GR [lb] + FA [lb] Where: TE = Total tractive effort [lb] RR = Force necessary to overcome rolling resistance [lb] GR = Force required to climb a grade [lb]
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EML2322L Drive Wheel Motor Torque Calculations - EML2322L -...

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