A Concise Method of Characteristic Analysis for Sciences Universal Machine
The series universal machine could be operated on d.c. or a.c. source. It was relatively complicated to analyze its operating characteristic. A good concise analysis method was introduced. By using the phase diagram to from a ‘circle diagram’ and the relationship between the pertinent line segments and the angles, its operating characteristic was got. Namely, its operating characteristic was the variation of current, torque, power, speed, etc. as the load was varied.
Zhenyu Du and Bin Liu
H. Hu "A Concise Method of Characteristic Analysis for Sciences Universal Machine", Applied Mechanics and Materials, Vol. 65, pp. 92-95, 2011