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US 4,908,555 AGranted
Axis feedrate output system
AssigneeFanuc Corporation
InventorsYoshiaki Ikeda, Mitsuru Kuwasawa
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AssigneeFanuc Corporation
InventorsYoshiaki Ikeda, Mitsuru Kuwasawa
Estimating the term…
An axis feedrate output system for CNC equipment which controls the position of a machining table in each axis by effecting feedrate control in accordance with a residual error between a position command and detected positional information in each axis. A current feedrate of the machining table in each axis is derived from the residual error, and a current actual feedrate of the machining table is synthesized using the current feedrate for the respective axes an output which represents the current actual feedrate of the machining table in the form of a ratio to a predetermined maximum feedrate is generated. An error register stores the residual error (servo error) between the position command for each axis from an MPU in the CNC equipment and the positional information detected by a position sensor and provides a feedrate command for effecting feedrate control. A fixed relationship between the residual error and the current feedrate in each axis is utilized to obtain the current feedrate in each axis from the residual error.
An axis feedrate output system for computer numerical control equipment which controls the position of a tool or machining table along a plurality of axes by effecting feedrate control in accordance with a residual error between a position command and detected position, comprising:
An axis feedrate output system for controlling the position of an element along a plurality of axes, comprising:
Dependencies are inferred from the claim text.