Position control apparatus

Details Position control apparatus Position control apparatus

1986-10-17

1989-01-03

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With compensating features

318561, 318563, G05D 23275

Patent

active

047959550

ABSTRACT:
In a position control apparatus for a table of a machine tool, for example, wherein the position of the table is detected by a position detector and a difference between a detected position and an instructed position is used to control the speed of a driving motor of the table, the position detector is constructed as an absolute type. Further, there is provided an error correcting device producing a correction value corresponding to an instructed position or a detected position. During starting, the correction value is added to the absolute value and the sum is used to update an instructed position register.

REFERENCES:
patent: 4484287 (1984-11-01), Gamo et al.
patent: 4502108 (1985-02-01), Nozawa et al.
patent: 4504832 (1985-03-01), Conte
patent: 4575666 (1986-03-01), Nakashima

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