SERVO MOTOR PERFORMANCE vs TEMPERATURE

SERVO MOTOR PERFORMANCE vs TEMPERATURE . George Younkin, ,MSEE. In the process of sizing a brushless dc SERVO drive on an industrial machine, little consideration is given to the effect of TEMPERATURE on the dynamic PERFORMANCE of the servomotor. Actually TEMPERATURE has a significant effect on the MOTOR time constants. The MOTOR resistance increases with TEMPERATURE as- R (T ) = R(To )[1 + (T To )]. where: T= Winding TEMPERATURE ( o C ). To = Specified TEMPERATURE (usually the cold TEMPERATURE ) ( o C ). / o C = linear TEMPERATURE coefficient for copper magnet wire. Likewise, the MOTOR torque constant (Kt ) and voltage constant (Ke) vary with TEMPERATURE for Ferrite magnets as- K e , t (T ) = K e , t (To )[1 (T To ) ]. The MOTOR time constants are a function of the above constants [1].

SERVO MOTOR PERFORMANCE vs TEMPERATURE George Younkin, P.E.,MSEE In the process of sizing a brushless dc servo drive on an industrial machine, little

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  Performance, Temperatures, Motor, Servo, Servo motor performance vs temperature

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