| 摘要 |
PURPOSE:To control output torque of a motor linearly by computing a flux command from a torque command and calculating a torque component command from the flux command and the torque command. CONSTITUTION:A field control section 3 forms a flux command PHIC corresponding to a motor speed Nr. A torque control section 4 shapes a torque component current command I2C from the flux command PHIC and a torque command TC. A current command-value control section 8 arithmetically operates a current command value IC from the torque component current command I2C and an excitation current IO from an excitation-current control section 5. An error with a current feedback signal IF is arithmetically operated by an adder 9 regarding the current command value IC, and a command voltage value is formed by an amplifying section 10. The result of addition of induced voltage EO and the command voltage value VC by the adder 12 is output as a PWM command. |
