| 摘要 |
PROBLEM TO BE SOLVED: To provide a position detecting unit corresponding to change of a motor rotating direction without changing control software.SOLUTION: A position detecting unit includes: a hall element 30C, a hall element 30A, and a hall element 30B. The hall element 30C is arranged at the upper side in a rotating direction of a rotor arranged at predetermined three positions at equal intervals surrounding the rotor generating a magnetic field, and detects the magnetic field in a state where a voltage with a predetermined polarity is applied and outputs a signal corresponding to the predetermined polarity. The hall element 30A is arranged at a position adjacent to the down side of a position to which a first magnetic sensor at the three positions is arranged, detects a magnetic field in the state of applying the voltage of predetermined polarity, and outputs a signal corresponding to the predetermined polarity. The hall element 30B is arranged at a position where is opposite to a remaining position of the three positions and is in between the positions where the hall element 30C and the hall element 30A are arranged, detects the magnetic field in the state where the voltage is applied to the polarity opposite to the predetermined polarity and the voltage is applied, and outputs the signal corresponding to the opposite polarity. |
