| 摘要 |
PURPOSE:To discriminate the propriety of setting the position detector of a thyristor motor without drive of other motor by using an armature winding chain magnetic flux detection signal, a position detection signal and a revolution pulse count signal while the position detection signal varies. CONSTITUTION:The point of no-load electromotive force waveform during rotation is obtained (e.g., the point of X-X) by obtaining the positional relationship between the armature winding MA and a field pole by the measuring step of the armature winding chain magnetic flux from a voltage integration type magnetic flux meter G. Then, the propriety of setting a position detector PS is discriminated in the range of electric angle of 60 deg. by the output of a logic circuit LG, the signal of the position detector PS to be varied next is simultaneously checked (signal B), thereby resetting the pulse counter PC. Further, the angle X2 from the point X-X to the point Y-Y is obtained from the value counted by the counter PC from the signal of the pulse generator PG. When the terminal voltage Vuv is matched to the position detection signal B, X3=X1-X2 becomes the error of setting the detector PS. |
