Plantwide Process Control

Lecturer: Dr.-Ing. Adel Mhamdi
Lecture: 2 hrs
Tutorials: 2 hrs
Course schedule: Please get them from the Course calendar RWTHOnline
Lecture notes: Available on Moodle
Semester: Winterterm
Language: German
Exam: Oral Exam

This lecture focuses on questions regarding process operability and process control design.

The fundamental goal of plant-wide process control design is to ensure safe operation according to a set of pre-specified constraints. An appropriate process control design shall be subject to requirements on safety, product specification, ecological impact, and economic considerations, in the presence of uncertainty.

Operability can be achieved through both process design and process control. Typically, chemical processes are multiple-input-multiple-output systems and therefore the assignment of control inputs and outputs is treated intensively in this lecture.

It should be noted that detailed design and implementation of control systems are not treated in this lecture.

This lecture deals with the following aspects:

  • Tasks of process control and operability
  • Control aims and control systems. Classification of process variables. Heuristics for control loop assignment. Degree of freedom analysis
  • Multiple-input-multiple-output systems. Advanced process control
  • State space realisation and frequency domain
  • Analysis of stationary and dynamic systems
  • Controllability, observability, stability
  • Centralized control systems
  • Decentralized control systems
  • Plantwide control design