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Process Control Primer
Introduction
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| Process Control Primer |
The type of control to be discussed is the kind involved in the so-called “Process Industries”, such as chemicals, petroleum, metals, paper, textiles, food, and water management.
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Examples are the refining of crude oil into fuel oils and gasoline; the conversion of wood pulp into paper; the extraction of metals from ores; the heat treating of metals; the production of glass; and the processing of municipal and industrial water supplies.
Processes Since the type of equipment we will discuss is the kind used in the measurement and control of industrial processes, identification of these processes will aid our understanding of what this equipment is and what its purposes are. Processes involve the handling of large quantities of raw materials in a continuous or semi-continuous (batch) stream, modifying the raw materials through either chemical or mechanical changes to make a product that has more value than the original materials.
Process Safety Management Training
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Table Of Contents
CHAPTER 1 – INTRODUCTION TO PROCESS CONTROL
1.1 Overview
1.2 Control Systems
1.3 Feedback Control Loop
CHAPTER 2 – PROCESS CHARACTERISTICS
2.1 Overview
2.2 Process Load
2.3 Process Lags
2.4 Capacitance
2.5 Resistance
2.6 Dead Time
2.7 Process Reaction Curve
CHAPTER 3 – MODES OF CONTROL
3.1 Overview
3.2 On-Off Control
3.3 Proportional Control
3.4 Proportional + Reset (Integral) Control
3.5 Proportional + Rate (Derivative) Control
3.6 Proportional + Reset + Rate (3 Mode) Control
3.7 Controller Selection Guidelines
CHAPTER 4 – ALGORITHMS
4.1 Overview
4.2 On-Off
4.3 PID-A Algorithm
4.4 PID-B
4.5 PD-A + Manual Reset
4.6 Three Position Step Control
4.7 Computations Associated With PID Equations
CHAPTER 5 – CONTROLLER TUNING
5.1 Overview
5.2 Manual Tuning
5.3 Accutune II™
5.3 Accutune II™ Duplex Tuning
5.5 Fuzzy Overshoot Suppression
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CHAPTER 6 – ADVANCED CONTROL CONCEPTS
6.1 Overview
6.2 System Component Descriptions
6.3 Simple Feedback
6.4 Cascade Control
6.5 Predictive Feedforward Control
6.6 Dynamic Feedforward Control
6.7 The Ratio Control Loop
6.8 Analog Override Control Strategies
CHAPTER 7 – AUXILIARIES
7.1 Overview
7.3 Square Root Extractors
7.4 Multiplier/Dividers
7.5 Calculation of Scaling and Bias Constants
7.6 Verification
7.7 Adder/Subtractor
CHAPTER 8 – HOW TO APPLY DIGITAL INSTRUMENTATION IN SEVERE ELECTRICAL NOISE ENVIRONMENTS
8.1 Overview
8.2 Potential Noise Sources
8.3 Prevention Methods
8.4 Recommended Wiring Practices
8.5 Power Source Considerations
8.6 Noise Suppression at the Source
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Process Control Primer
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