$33
AIA NAS994
1975
Adaptive Control System for Numerically Controlled Milling Machines
- Format:
- Language(s) :
- Published :
- English
- 01/01/1975
Purpose
This specification provides a standard for the manufacture,
performance, reliability, inspection, and procurement of an
Adaptive Control System (ACS) for Numerically Controlled milling
machine tools. (Include machine tool description.) This standard
lists minimum requirements and is not intended to limit design
advances.
Classification
The Adaptive Control System shall be of the following types and
classes:
TYPE I HARDWIRED
The response to sensor signals, i.e., the related modification
to machine/controller input signals, is primarily performed by
electronic hardware. This does not preclude the need for some
processor software requirements such as ACS on/off and constraint
codes for machine operating parameters.
TYPE II SOFTWIRED
The response to sensor signals, i.e., the related modification
to machine/controller input signals, is primarily performed by
software routines. This type of ACS may also include processor
requirements as noted in Type I.
CLASS I
Slide velocity is the control variable that is modified in
response to sensed cutting conditions.
CLASS II
Spindle speed is the control variable that is modified in
response to sensed cutting conditions.
CLASS III
A combination of Classes I and II.
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