| 摘要 |
PURPOSE:To prevent the deviation of magnetic field from the rotation circumference together with the generation of abnormal magnetic field, by means of performing the quiescence of sinusoidal waves which reciprocally possess 90 deg. phase gap with an optional phase, thereby maintaining the phase level during the quiescent period, and simultaneously performing both sinusoidal waves when starting the generation of sinusoidal wave as well as its quiescence. |
