Understanding PID Control Systems in Industry 4.0
Proportional-Integral-Derivative (PID) controllers are the cornerstone of regulation in most modern industrial processes. This course details their operating principles, parameter tuning standards, and best practices for analysis.
Theoretical Foundations
The PID action combines three distinct terms to correct the error between a setpoint and a measurement. The proportional term acts on the present, the integral on the accumulation of past errors, and the derivative on the prediction of future errors, according to the IEC 61131 standard.
Associated Educational Materials
To delve deeper into this subject, consult the following reference documents:
Documents & Technical Schematics
- 1 Functional block diagram of a standard control loop (PDF format)
- 2 Comparative table of tuning methods (Ziegler-Nichols, Cohen-Coon)
- 3 Practical case analysis sheet with response curves
Standards and Documentation
The implementation of these systems must adhere to strict frameworks. The IEC 61511 standard (Functional safety of instrumented systems) and ISA-88 (Batch process modeling) are essential for the documentation and validation of control architectures.
Accurate documentation is crucial for maintenance and audit. It includes P&ID diagrams, functional descriptions, and test procedures.