| 摘要 |
PROBLEM TO BE SOLVED: To provide the speed controlling system of a motor-driven injection molding machine by which follow-up ability is good in a range from low speed to high speed and speed control is enabled by such a speed pattern that responsibility of a servomotor driving system is used efficiently and effectively. SOLUTION: An adjustable speed operation part 13 and a pattern generator 14 act as a speed pattern generation means. When preset speed V0 is kept as a border and target speed V decided by set value which is set by an operator is larger than the preset speed V0 , such a speed pattern is generated that acceleration at time of startup of a servomotor is always constant value A0 . On one side, when the target speed V is smaller than the preset speed V0 , such the speed pattern is generated that acceleration at time of startup of the servomotor is A0 .V/V0 and rise time is always constant. |
