Feedrate Control - Siemens SINUMERIK 828D Function Manual

Examples
3.3 Examples of adaptive control
3.3.2

Feedrate control

Example of adaptive control with an analog input voltage
A process quantity (measured via $A_INA[1] ) must be regulated to 2 V through an additive
control factor implemented by a path (or axial) feedrate override. Feedrate override shall be
performed within the range of +100 [mm/min].
Figure 3-2
Determination of coefficients:
y = f(x) = a
a1 = - 100mm / (1min * 1V)
a1 = - 100% regulation constants, pitch
a0 = - (-100) * 2 = 200
a2 = 0 (not a square component)
a3 = 0 (not a square component)
Upper limit = 100
Lower limit = -100
146
Diagram illustrating adaptive control
+ a x +a x + a x
2 3
0 1 2 3
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
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