12.9 PID Control
12.9.1 Function Description
PID control is used in process controls such as flow control, pressure control,
temperature control, and in control of other engineering values. In PID control, a
negative feedback system is formed with proportional, integral and derivative
operations based on the differences between reference values and their feed-
back. In this way, the difference between the actual output and the reference is
reduced.
The basic control principle is shown as the figure below:
Fig. 12-37: PID control principle
VFC 3210
Bosch Rexroth AG
Functions and Parameters
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