Pid Control System - Mitsubishi Electric MELSEC-Q Series User Manual

1 OVERVIEW

1.2 PID Control System

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(1) PID control system
Figure 1.2 shows the system configuration to perform PID control.
(2) PID control procedure
Figure 1.3 describes the PID control procedure.
(3) PID control (simplified two-degree-of-freedom control)
Generally in the PID control, when the P, I, and D constants to improve the
"response to the setting" are set, the "response to the disturbance" degrades.
In contrast, when the P, I, and D constants to improve the "response to the
disturbance" are set, the "response to the setting" degrades.
In the PID control (simplified two-degree-of-freedom control) of this module, when
the P, I, and D constants to improve the "response to the disturbance" are set,
the performance to the "response to the setting" can be specified ("fast", "normal",
or "slow").
Fig. 1.4 Simplified two-degree-of-freedom PID control
Fig. 1.2 PID control system
Fig. 1.3 PID control procedure
MELSEC-Q
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