Abstract
In this paper, based on the performance equations, expressed by using the equivalent circuit, parameter ratios of a two-phase servomotor, the various performance characteristics [(1) the speed-average torque characteristics, (2) the influence of the alternating torque on the average torque, (3) the efficiency of servomotor, etc.], which have no connection with the output power of the two-phase servomotor, are investigated from the more general viewpoint, and these various performance characteristics are clarified.
Secondly, based on the above investigated results, a guide for the design of the two-phase servomotor which has desirable performance characteristics [(1) the speed-average torque characteristics have the drooping ones, (2) the influence of the alternating torque on the average torque is small, (3) the efficiency of servomotor is high, (4) no single-phase operation, etc.], is presented in terms of the best parameter ratios.
That is, if the various parameter ratios of the two-phase servomotor are designed to satisfy x1/xm=0.05, r1/xm=0.3, x2/xm=0.04 and r2/xm=0.40 respectively, it is clarified that the two-phase servomotor which has the desirable performance characteristics is obtained.
