Machine tool control apparatus
AssigneeFanuc Corporation
InventorsMitsuyuki Taniguchi, Keisuke Imai, Masato Aochi
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Abstract
The invention aims to reduce an error occurring due to the mounting condition of an acceleration sensor. In the case of a two-axis sensor, an angle θ is calculated from outputs (x′, y′) that the acceleration sensor produces when known accelerations (x, y) are applied, and the angle θ is stored in a storage device contained in a casing in which the acceleration sensor is housed. In the case of a one-axis sensor, the ratio of the magnitudes of accelerations is stored. The acceleration detected by the acceleration sensor is compensated by using the value stored in the storage device.
Claims4
A machine tool control apparatus comprising:
- a position/speed detector detecting at least one of the speed and position of a driven body;
- a control processor controlling the driving of said driven body based on a command value for at least one of the speed and position of said driven body and on a detection value fed from said position/speed detector;
- an acceleration detection element detecting the acceleration of said driven body;
- a storage device storing a compensation value to be used for compensating said acceleration detected in operation by said acceleration detection element;
- and
- a compensating means for compensating an acceleration detection value by using a measured value output from said acceleration detection element and also using said compensation value stored in said storage device, wherein
- at least one command value, selected from among the command values for the speed and position of said driven body and a command value for an electric current, is compensated based on said acceleration compensated by said compensating means.
Dependencies are inferred from the claim text.