| 摘要 |
PURPOSE:To shorten accelerating/decelerating time and to improve the positioning accuracy by driving by 2-phase exciting system at accelerating and decelerating times, and driving by a microstep system at stopping time. CONSTITUTION:A microprocessor 1, when receiving a movement command, outputs a microstep drive signal to a current value capable of switching to 2-phase excitation. When one-phase current becomes a value capable of switching to the 2-phase excitation, the microprocessor 1 drives a pulse motor by a 2-phase excitation table and accelerating/decelerating pattern. When a pulse motor approaches a stopping position, the microprocessor 1 alters the 2-phase exciting drive to a microstep drive, and stops a motor at the prescribed position by the microstep drive. Thus, the accelerating/decelerating speed can be increased and the motor can be stopped accurately at the prescribed position. |
