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With reference to Example 149 assume that the load torque applied to the PM DC motor is zero Determine the speed response of the motor speed to a step change in input voltage Derive expressions

With reference to Example 14.9, assume that the load torque applied to the PM DC motor is zero. Determine the speed response of the motor speed to a step change in input voltage. Derive expressions for the natural frequency and damping ratio of the second-order system. What determines whether the system is over- or underdamped?

14.26      A motor with polar moment of inertia J

develops torque according to the  relationship

aω b. The motor drives a load defined by the torque–speed relationship Tcω2 + . If the four coefficients are all positive constants, determine  the

equilibrium speeds of the motor-load pair, and whether these speeds are  stable.

 

 

 

Jun 18 2020 View more View Less

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