| 摘要 |
PURPOSE:To simplify fitting of a motor with a field-pole position transducer by correcting the amplitude and phase of a current reference signal outputted from a field-pole position transducer signal processing circuit through the output voltage of a corrected voltage generator circuit. CONSTITUTION:A resolver signal processing circuit 1 generates sine wave current reference signals Ialpha=Icostheta, Ibeta=Isintheta having a phase difference of 90 deg. from each other. The signal Ialpha is inverted by an inversion circuit 3 and multiplied by a voltage (e) from a variable resistor 9 through a multiplier 3 to make Ialphac=-e.Isintheta. The signal Ibeta is multiplied by the voltage (e) through a multiplier 4 to make Ibetac=eIcostheta. The signals of adding circuits 5 and 6 are respectively expressed by equations (6), (7) and outputted to multipliers 7, 8. Any error in fitting a synchronous motor with a resolver can be corrected by regulation of the variable resistor 9. |
