Tuning Control Loops, Feedback and Advanced Controllers
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Tuning Control Loops, Feedback and Advanced Controllers Course
Introduction:
Course Objectives:
Participant will be able to:
§ Explain the fundamentals of controller gain or proportional band, integral and derivative actions and the application of each
§ Explain the operation of the components in a closed loop control system including static and dynamic functions
§ Identify the requirements for open loop and closed loop stability
§ Use three methods to tune a control system for stated quality control
§ Understand the functions of cascade control loops and the advantage of cascade control over single element feedback control
§ Tune a cascade control loop for optimum control
§ Understand the principles and design features of feed forward control
§ Tune a feed forward control system for optimum control
§ Identify the advantages of feed forward control over feedback control
Who Should Attend?
This Intensive five-day instructional program covering the educational needs of Instrumentation and Control Engineers & Technicians, Plant Operators, Operation Engineers, Process and Utility Supervisors, Project Engineers & Technicians, and Technical Supervisory personnel involved in Tuning Control Loops, Feedback and Advanced Controllers. No specific prerequisite training or experience required for registration.
Course Outlines:
- Control Modes: Proportional, Integral and Derivative
- Dynamic and Steady State Considerations: Gain, Dead Time and Time Constant
- Tuning Control Systems: Closed Loop Tuning Using Ziegler Nichols Method, Evaluation and Control Criteria
- Cascade Control: Primary Loop, Secondary Loop, Design and Tuning Criteria
- Ratio Control: Applications and Implementation
- Feed forward Control: Criteria, Applications, Tuning, Implementation, Material and Energy Balances
- Safety Concerns and Procedures when Operating Control Systems
- Relationship of Controller and Process: Four components in a closed loop system, Interaction of changes of each component, and Benefits of Good Control
- Rules for Improved Trial and Error Tuning
- Analysis of Closed Loop System: Tuning Using Oscillation Techniques
- Analysis of Open Loop System: Tuning Using a Response Curve Generated by a Step Change, Tuning Using a Response Curve Produced by a Load Change, and Working with Unusual Response Curves
- Process Characteristics and Related Tuning Requirements
- Understanding Changes that may be Required in the Process and Suggest Alternative Methods
- Relationship of Controller and Process: Various Parts of Processes and Interaction of these Parts
- Description and Benefits of Feed forward Controllers: Tests Required to Obtain Feed forward Constants, Calculation of the Feed forward Constants
- Description and Benefits of Adaptive or Scheduled Gain: Methods to Tune Controllers with Adaptive Gain. Use of Adaptive Gain to Provide Control of Non-linear Processes. Using Adaptive Gain to Provide Special Effects. Limits, Step Changes, Transmitter Failure Protection, Surge Control, etc.
- Analysis of Processes with Excessive Dead Time: Dead Time Compensatory. Tuning Dead Time Processes with PID only. Small Changes to a Process to Provide Improved Control
- Application of Error Squared Controllers for Level Control.
- Understanding Changes that may be Required in the Process