Made for students, by students Motor Selection Guide
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PowerThe speed and torque requirements you determined earlier are also used to determine a power requirement for your motor. All motors are only able to output a maximum amount of power (Pmech, max). The power output from a motor can be utilized in mainly two (desired) ways: spinning its output shaft faster or spinning its output shaft with more torque. Hence, there is a tradeoff between speed (n) and torque (M) in any motor’s operation as shown in the equations below.
In short, these equations state that for an equivalent power output, the more speed the motor produces, the less torque it will have and vice versa. For any given operating condition, the mechanical power can be calculated using the torque and speed of that operationg point. To calculate the amount of power required for the ModBot motor selection, the speed and torque values calculated previously are entered into the power equation above to produce the equation below. 
A minimum power output of 17.2 Watts is required to achieve the system level velocity and acceleration requirements. Keep in mind that there are many variables that were assumed to be negligible, and adding a safety factor is a good idea in case some variables are more significant than initially thought. These calculations narrow the range of possible motors; it’s unlikely a motor with greater than a 100 Watt output is necessary and likewise, a 15 Watt motor will not allow the ModBot to achieve the acceleration requirements. Typically, the biggest limiting factor for selecting a motor size will be the amount of electrical power available, hence it is essential to discuss how much power is required with the power electronics designers. This will be further discussed in the electrical power requirements section.6 Directory: intel intel -> Using Abstract Language Signals Power intel -> Intel Corporation intel -> Intel Corporation intel -> Intel® WiDi 38. 0 1 Production Version ReadMe File intel -> The Intel Celeron Processor intel -> The Sensational State Quarters Unit Plan intel -> Profitability & Effectiveness (ttm) intel -> Q: How much of the world’s computation is in high-performance computing clusters vs normal clusters vs desktop computers vs other sources? A Download 9.04 Mb. Share with your friends:
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