| 摘要 |
PURPOSE:To accurately control the rotating speed of a motor without necessity of a rotating speed detector and the like even in a brushless structure by an electric device of the brushless structure and an arbitrary waveform generator. CONSTITUTION:An arbitrary waveform generator 2 is connected by wirings 7 with 3-phase terminal of the stator 3 of an electric device. The generator 2 is connected via a cable 8 with its controller 5. The generator 2 converts a DC power or AC into a DC by a diode bridge, converts by an inverter into an AC or AC/DC converts by a cycloconverter. The rotor 4 of the electric device is brushless, and wired to generate a single-phase alternating magnetic field as its operation. |
