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EX-501-3 - Detailed Loop Analysis with ExperTune


Objectives

This course will allow you to effectively use ExperTune's PID tuning and analysis tools in your plant.
Who should attend

Anyone with a basic knowledge of instrumentation who wishes to use loop analysis and optimization software with PID controllers.
Schedule

From 8:30 am to noon and from 1:00 pm to 4:30 pm

Each day
Content

Day 1 : Important concepts

Introduction
  • Control loops
  • Noise, disturbances, load
  • Feedback-Feedforward
  • Control objectives
Process
  • Simple model
  • Types of processes
  • Process flaws
  • Exercises
Controllers
  • Proportional, integral, derivative, filter
  • Structures of industrial controllers
  • Exercises
Tuning
  • Intuitive tuning
  • Performance criteria
  • Load change, setpoint change
  • Tuning: a compromise
  • Traditional tuning methods
  • Natural frequency
  • Important time delay
  • Limits of traditional tuning methods
  • Exercises


Day 2 : Tuning and analyzing a loop using ExperTune

ExperTune software
  • Basics principles
  • Acquiring data
  • Choice of tuning objectives
  • The tools available
  • Exercises
Data to tune a loop
  • Good data, from a controller ouput change (manual)
  • Good data, from a setpoint change (automatic)
  • Exercises
Tuning control loops using ExperTune
  • PID grid
  • Quality of frequency data
  • Filtering
  • Selecting tuning parameters, safety factor, Lambda value
  • Load rejection and setpoint tuning
  • Tuning comparison with Lambda and Ziegler/Nichols tuning
  • Simulation, response to load change, setpoint change, noise
  • Robustness plot
  • Performances: IAE, robustness, valve travel, etc.
  • Exercises
Analyzing a control loop using ExperTune
  • Loop analysis vs loop tuning
  • Hysteresis check
  • Linearity
  • Basic reporting
  • Exercises


Day 3 : ExperTune step-by-step

Steps to tune a loop
  • Operator cooperation
  • Control objectives
  • Process knowledge, P&ID and wiring diagrams
  • Bump sizes, preliminaries
  • Setpoint changes in both directions
  • Bump tests to check hysteresis, stiction, linearity
  • Loop analysis, design, 4 rules of 3
  • Exercises
Analyzing the data from a test in automatic mode
  • How to detect hysteresis, stiction, high process gain
  • How to detect bad tuning parameters
  • Exercises
  • Tips and tricks
Analyzing control loops using ExperTune tools
  • Hysteresis, noise and process gain check
  • Stiction test
  • Linearity
  • Exercises
Scan time
  • Aliasing
  • ExperTune and scan time to acquire data
Exercises: real cases, self-regulating and integrating processes
  • Analyzing the data
  • Editing the data
  • Tuning the loop to quickly remove disturbances
  • Robustness analysis
Reporting
  • ExperTune report
  • Adding items to report
Conclusions
  • Tuning methods comparison
  • Time to tune loops
  • Robustness and performance
  • Practical rules, tips and tricks
  • Windows of acceptable tuning parameters
  • Process control and economics

Manual included

Ruel, Michel. Fundamentals of process control, Lévis, v.2 1999, 279 p. (not included in price of a discounted course)
Software used

ExperTune (latest revision)

Please note that each participant must have a laptop computer to attend the course. If you do not have one, we will arrange to rent one for you, at your cost.