| 摘要 |
PURPOSE:To reduce the size of a motor by confirming the start of the motor and switching thereafter to a normal motor drive according to the increasing or decreasing state of the detection output of a sensor discriminated by discriminating means. CONSTITUTION:A Hall sensor 100 generates a voltage responsive to the position of the rotor of a motor 160. Discriminating means 110 is provided to discriminate the increasing or decreasing trend of the detected output. Further, first, second timing distributing means 120, 130 are provided, the means 120 delivers a timing for starting a motor 150, and the means 130 delivers a timing for normally driving it in response to the phase of the motor 160 by the output of the sensor and the output of the means 110. The timing signals are switched by switching means 140 according to the output of the means 110, and distributed to the driver 150. Thus, the motor 150 can be controlled to be driven by one sensor. |
