Moreover, the model assumes that the servo-valves have negligible response time compared with the process dynamics
, that there is negligible leakage and friction in the control actuators, and that the hydraulic fluid is incompressible.
However, the control system will not be able to resolve multiple conflicting goals since most of the process dynamics
and quality characteristics are coupled - a process change imposed to improve one part property can inadvertently reduce quality elsewhere in the part.
Studies of rheometer performance and polymer process dynamics
(2-5) and polymer process control (6-8) using process rheometers as sensors have revealed a considerable time delay associated with the rheological measurements.
An effective control system is largely dependent on the understanding of process dynamics
The results under different process conditions were not projected, and the process dynamics
were not reported due to the inherent nature of AMFC.