| 摘要 |
PURPOSE:To make no difference between momentum detected by a motor controller and actual momentum of a motor by connecting a motor power monitoring section monitoring the power supply of a motor power section to the motor controller performing such an initialization as a motor position detecting operation and others. CONSTITUTION:A motor controller 5 keeps on supplying a motor 3 with a driving pulse enough to detect an initial position in case of power closing until it receives an initial position detection signal from a position detector 4. The motor controller 5 outputs a control signal to a motor driver 2 so that it can obtain a specific momentum based on the initial position information from the position detector 4. When a voltage of a motor power section 1 drops, a motor power monitoring section 8 detects it, and a signal detecting a voltage drop is outputted to the motor controller 5. The motor controller 5 performs an initialization such as a position detecting operation of the motor 3 and others when a voltage drop signal is inputted. |
