POSITIONING CONTROL METHOD FOR SERVO-SYSTEM OF NUMERICAL CONTROLLER

摘要

PURPOSE:To reach a target position quickly, and also to execute exactly positioning by moving and processing a remaining distance at the highest speed, when the remainder distance has been generated in the highest speed section, due to a movement of every control period. CONSTITUTION:Acceleration and deceleration sections and the highest speed section are assigned, and in a moving section (the highest speed section) by a designated speed V (the highest speed) except the acceleration and deceleration sections in a moving extent L, a remainder distance DELTAl which cannot be divided by an operation quantity (moving extent) of every control period is derived, and it is expressed in terms of a necessary time DELTAt of the case of the movement by the highest speed. Also, DELTAt is a remainder time in the highest speed section. In case of the acceleration and the deceleration sections, by an acceleration and deceleration table, instead of a movement (l) at a designated speed V, a target position is corrected by adding the moving extent which has been derived from this table.