Question

All of the following statements concerning the use of self-tuning controllers are true EXCEPT:

A. It will yield good control regardless of process conditions
B. It eliminates the need for controller tuning by technicians
C. It is best suited for a process with variable gain
D. It is largely being replaced by adaptive gain controllers

Answer 1

The false statement concerning the use of self-tuning controllers is that they will yield good control regardless of process conditions. The correct answer is A.

Step-by-step explanation:

The student has asked about a statement that is false concerning the use of self-tuning controllers. Self-tuning controllers are a class of automatic control systems that adjust their parameters in real-time to maintain optimal performance. While these systems can indeed eliminate the need for manual tuning by technicians and are highly adaptable, making them suitable for processes with variable gain, the statement that self-tuning controllers will yield good control regardless of process conditions is not necessarily true.

For effective control, the process conditions must be within certain bounds where the controller can adapt and maintain control. Furthermore, the notion that self-tuning controllers are being largely replaced by adaptive gain controllers is not universally true. Both technologies have their own places, and the use of one over the other depends highly on the specific application and the nature of the large scale processes being controlled.

Therefore, the correct answer to the student's question would be A: It will yield good control regardless of process conditions, as this is the statement that is not true in all cases concerning the use of self-tuning controllers.