| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control apparatus capable of achieving smooth rotation control from a low-speed range up to a high-speed range.SOLUTION: A microcomputer in the motor control apparatus calculates a rotational speed of a motor from time between edges appearing in each electric angle of 60 degrees when starting a motor on the basis of a signal outputted by detecting a magnetic field of the rotating rotor by a Hall sensor and calculates the rotational speed of the rotor from time between edges appearing in each electric angle of 180 degrees, an electric angle of 360 degrees, an electric angle of 900 degrees, and an electric angle of 1800 degrees which are larger than the electric angle of 60 degrees on the basis of the outputted signal.SELECTED DRAWING: Figure 5 |
