Instrumentation Automation Systems Workshop Course
Electrical and Power Engineering
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Instrumentation Automation Systems Workshop Course
Introduction:
Although the subject of many hundreds of articles, books, and courses, the basic elements of automatic process control are still widely misunderstood. Worse, the majority of control systems are misapplied. Research carried out by ISA and other bodies indicate that up to 75% of all loops will oscillate when operated in automatic.
Course Objectives:
This workshop, Practical Process Control: Loop Tuning and Analysis, is designed to provide engineers and technicians with the basic theoretical and practical understanding of the process loop and how this can be applied to optimize process control in terms of quality, safety, flexibility, and costs. This workshop aims to enable participants to develop the following competencies:
- Understanding of the concepts of closed-loop control used in the field of process control
- Select and specify different types of control algorithms and the effect on loop tuning performance in different applications
- The experience of exchanging ideas, problems, and solutions with other delegates from different backgrounds and processes
- A renewed or refreshed ability to understand their process, plant, or operation and apply the appropriate instrumentation and control technology
Who Should Attend?
Professionals involved in designing, selecting, sizing, specifying, installing, testing, operating, and maintaining process instrumentation and control systems.
- Automation Engineers
- Chemical Engineers
- Consulting Engineers
- Design Engineers
- Electrical Engineers
Course Outlines:
Basic process considerations
- Definition of terms
- Process lag, capacitance, and resistance
- Process reaction curve
- 1st and 2nd order reactions
Process measurement
- Instrumentation cabling
- Do’s and don’ts
- Filtering
- Aliasing
- Reaction masking
- Sensor placement
- Correct PV
- Effect of span
Final control element
- Choked flow
- Pressure recovery
- Flashing and cavitation
- Valve construction
- Valve characteristics
- Inherent
- Profiling
- Installed
- Cavitation control
- Actuators
- Diaphragm
- Cylinder
- Electric
- Valve positioners
- Dead band and hysteresis
- Stick-slip
- Testing procedures and analysis
- Effect of valve performance on controllability
Fundamentals of Process Control
- ON/OFF control
- Proportional control
- Proportional band vs. proportional gain
- Proportional offset
- Reset
- Integral action
- Integral windup
- Stability
- Bode plot
- Nyquist plot
- Derivative action
- PID control
- Control algorithms
- Load disturbances and offset
- Speed, stability, and robustness
Fundamentals of Tuning
- Basic principles
- Open-loop reaction curve method (Ziegler-Nichols)
- Default and typical settings
- Closed-loop continuous cycling method (Ziegler-Nichols)
- Lambda tuning
- Fine-tuning
- Tuning for load rejection vs. set-point rejection
- Tuning according to Pessin
- Tuning for different applications
- Speed of response vs. robustness
- Surge tank level control
Automated tuning systems
- Self-tuning loops
- Adaptive control
Advanced control algorithms
- Cascade systems
- Feedforward and combined systems
- Ratio control
- Adaptive control systems
- Deadtime compensation