[From Bruce Nevin (2003.04.09 14:31 EDT)]
I am new on this list and I thought it is about cybernetics and control of
systems.
It is.
Although at times (like now) we seem to be more involved with exemplifying conflict between control systems at high levels of the perceptual control hierarchy.
More precisely, this group is about negative feedback control systems in which the setpoint is established within the system rather than from the outside. In the ordinary case, the setpoint (which we refer to as the value of the reference signal, or the reference value, or sometimes for brevity just the reference) is a product of the error output from one or more control loops at the next higher level of the hierarchy. In some cases reference values (and possibly other parameters) are adjusted by a process called reorganization, which is hypothesized to start when persisting error cannot be corrected. In a third set of cases, in social organisms (that are sufficiently complex), it appears that some references are learned by observation of others and by a kind of convergence in the course of accomplishing communicative or cooperative aims, e.g. for language and culture. There is solid research only for the first type, some strongly suggestive results for the second type, and only the beginning of discussion of the third type.
My question for this list is the following:
I am looking for a publication where it is made clear which assumptions of
the situation must be made that it is worth or even right to use a
transformation model for this situation which is single valued and closed?
I don't understand the question.
What do you mean by a situation which is single valued and closed?
What is a transformation model? How does it relate to negative feedback control according to autonomously set reference values?
When you ask about "assumptions of the situation" are you referring to properties of the control system? Or are you referring to properties of the environment of the control system through which its negative feedback control loop is (or loops are) closed?
/Bruce Nevin
ยทยทยท
At 11:24 AM 4/9/2003, Mag. Roland Ernst wrote: