| 摘要 |
PROBLEM TO BE SOLVED: To provided sensorless control equipment capable of sharply reducing the cost. SOLUTION: This sensorless control equipment consists of a controller 20, a power conversion circuit 30, a motor 40 and a code detecting circuit 50 of an armature current. The controller 20, to which a velocity command to the motor 40 is inputted from the outside and a code of a current flowing in the motor, is inputted from the code detecting circuit 50 of the an armature current outputs a command signal of a motor drive voltage to the power conversion circuit 30. The power conversion circuit 30, to which the command signal of the motor drive voltage is inputted from the controller 20, and outputs a motor drive voltage to the code detecting circuit 50 of the armature current. The code detecting circuit 50 of the armature current to which the voltage for driving the motor is inputted from the power conversion circuit 30, outputs the code of the current flowing in the motor to the controller 20, and outputs the motor drive voltage to the motor 40. |
