公开(公告)号：US4902950A

公开(公告)日：1990-02-20

申请号：US247442

申请日：1988-08-11

申请人： Hideaki Kawamura ,  Kentaro Fujibayashi ,  Haruhiko Kozai

发明人： Hideaki Kawamura ,  Kentaro Fujibayashi ,  Haruhiko Kozai

IPC分类号： G05B19/18 ,  G05B19/404 ,  G05D3/12

CPC分类号： G05B19/404 ,  G05B2219/43122 ,  G05B2219/49381 ,  G05B2219/49382

摘要： A numerical control method is provided, which is capable of compensating for a response delay of a servo system to command pulses to thereby make it possible to repetitively effect reciprocal movement of a controlling object at a high speed over the entirety between target positions inclusive of these positions, without the need of increasing a time period for execution of a desired operation.A time period (T0) required for delivering all of the command pulses for forward movement is calculated on the basis of a commanded moving amount and a commanded feed rate (V0) stated in a program, and a corrected feed rate (V1) is calculated in dependence on the amount of command pulses for backward movement delivered over a time period (t2) starting at an instant (t1) that delivery of command pulses for backward movement is started and ending at an instant a positional deviation becomes zero, and further, the command pulses for forward movement and for backward movement are delivered over the time period (T0) at the corrected feed rate (V1), respectively.