Adaptive Control (evaluation of internal drive variables)

Adaptive Control (evaluation of internal drive variables)

In the SINUMERIK MC ECO package

Function

The evaluation of internal drive variables can be used to control a second process variable depending on a measured process variable – Adaptive Control. Evaluation of internal drive variables is a prerequisite for implementing adaptive control (AC).

The Adaptive Control can be parameterized within the part program as:

• Additive control
  The programmed value (F word) is corrected by adding
• Multiplicative control
  The F word is multiplied by a factor (override)

The following real-time variables can be evaluated as internal drive variables:

• $AA_LOAD drive capacity utilization in %
• $AA_POWER drive active power in W
• $AA_TORQUE drive torque setpoint in Nm
• $AA_CURR actual axis/spindle current in A

Benefits

• A second process variable can be controlled depending on the measured spindle current, e.g. path-specific or axis-specific feedrate. This permits, for example, the cutting volume to be kept constant when grinding, or faster covering of the grinding gap when scratching (first touch).
• Protecting machines and tools against overload
• Shorter machining times
• A superior surface quality of the workpieces can be achieved

Requirement:

• Loadable compile cycle

→ SINUMERIK MC ECO package