Selection Steps

1. Determine system (machinery/ application).
2. Determine operating mode (duty cycle, speed, acceleration/deceleration time, positioning time).
3. Calculate acceleration, and load acceleration force: $$F_a=ma$$ where
   m: Load Mass (kg)
   a: Acceleration (m/s²)
4. Temporarily select a motor meeting the requirements of force.
5. Calculate peak force: $$F_{max}=F_1=Ma+\mu Mg+F_e$$ where
   M: Total Mass (kg)
   F₁: Acceleration Force (N)
   F_e: External Force (N)
   µ: Friction Coefficient
   g: Gravity Acceleration (9.8m/s²)
   External force is positive when it is against the direction of operation.
6. Calculate continuous force
   Uniform force (N): \(F_2=\ \mu Mg+F_e\)
   Deceleration force (N): \(F_3=Ma-\mu Mg+F_e\)
   Continuous force (N): $$F_{RMS} = \sqrt { \frac{1}{(t_1+t_2+\cdots+t_n)} \left (t_1 \cdot {F_1}^2 + t_2 \cdot {F_2}^2 + \cdots + t_n \cdot {F_n}^2 \right)}$$
7. Confirm motor selection requirements:
   The maximum force of the motor is larger than F₁;
   The continuous force of the motor is larger than F₂ and F_RMS.
8. Rated power and maximum power should be calculated if required: $$P=F \cdot v$$