| 摘要 |
PURPOSE:To perform constant torque driving upto a high speed region without requiring constant current control by a method wherein a function generator creates a signal which increases linearly with pulse frequency and the output voltage from an output control section is controlled based on the output from the function generator. CONSTITUTION:An excitation sequencer SEQ provides a sequence signal to an inverter INV according to a pulse command signal C. A function generator FVG generates a voltage signal which increases linearly with the pulse frequency designated by the pulse command signal C, and a power control section PWC connected with a power supply PS applies a voltage increasing linearly the pulse frequency according to the output signal from the function generator FVG onto the inverter INV. Input voltage to the inverter is fed through dividing resistors R1, R2 back to the power control section PWC and the inverter INV feeds current to each phase winding of motor based on the sequence signal. |
