| 摘要 |
PURPOSE:To rotate a rotor by a driving force resulting from electrical current and the magnetic flux of stator magnet, by controlling a driving circuit by a magnetic pole position detector means to sequentially supply the elctrical current to driving windings. CONSTITUTION:The rotor 2 of the motor 1 comprises a plurality of driving windings 3, a driving amplifier 4 for the windings 3, a Hall element 6 for detecting the position of magentic pole of the permanent magnet 5 of the stator, a part of a no- contact power supply means 7 for the driving amplifier 4, for example, the secondary winding n2 of a rotary high-frequency transformer 8, diodes D1, D2 and a smoothing capacitor C. Power is supplied from a square-wave power source 9 to the primary winding n1 of the high-frequency transformer 8. A position detection output corresponding to the position of magnetic pole of the stator magnet 5 is obtained from the Hall element 6 to control the amplifier 4 to sequentially supply the electrical current to the windings 3. The rotor is rotated by the driving force resulting from the interaction between the current and the magnetic flux of the stator magnet 5. |
