process variable
controlled variable

It differs from simple Yaw control because is not the heading angle the controlled variable, but its variation rate instead.

The controlled variable as measured by the observer corresponds to a reference value for a perception that the organism is controlling.

A common way to achieve this is to partition the groups into subgroups whose members have (nearly) the same value for the controlled variable.

Here, the temperature is the controlled variable.

Teaching cannot be compared to other professions, where the rating is based upon more controlled variables.

However, feedback control usually results in intermediate periods where the controlled variable is not at the desired set-point.

The controlled variable is also measured and used in feedback control.

It is important that the control action counteracts the change in the controlled variable (negative feedback).

The researchers also found that the controlled demographic variables accounted for no more than 3% of the variance.

Essentially, a controlled variable is what is kept the same throughout the experiment.