Abstract
In this paper, an equation is derived to calculate the alternating torque of a 2-phase servomotor which is operated with a 2-phase source unbalanced in amplitude and phase angle.
The equation is simplified by introducing the specific relation among the equivalent circuit parameters of the 2-phase servomotor.
The alternating torque of the test 2-phase servomotors in phase control is calculated by using the equation.
The calculated value is compared with the alternating torque obtaind experimentally by using a 2-phase induction type accelerometer. The agreement is satisfactory.
In phase control of a 2-phase servomotor, the alternating torque characteristics and, the relation between alternating torque and average torque are calculated from the above equation.
The alternating torque characteristics in phase-control and in voltage control are compared.
