Abstract
A servo system moves a mass from one position to another as quickly as possible. A servo motor requires very high short term torque and should be able to accelerate and decelerate very quickly. In other words, a servomotor should be able to produce high torque and its inertia must be low. The paper concentrates on the mechanical design optimization of the rotor assembly, given the existing physical constraints of the prototype motor. The existing physical constraints include the rotor dimensions. To reduce the cogging torque, the different magnet shape and skew were manufactured and tested. Using the above design the ratio of torque to the moment of inertia of the rotor goes to its minimum amount. As a result, the acceleration and deceleration of the system will be improved.
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