Continual tracking algorithms implementation to naturally non-trackable plants

A class of linear single control single output plants are considered. In practice plenty of plants have been naturally nontrackable especially “simpler” types. “Simpler” types plants are low order (second or third) with single control, such as pneumatic servomotors, hydraulic servomotors and pressure vessels. In these cases a modification of present known algorithms were presented. However the new natural tracking concept straightline tracking and new high gain natural straightline algorithms are given. These algorithms provide finite time interval, finite reachability time tracking. Their implementation haven´t required knowledge of plant internal dynamics as in other natural tracking algorithms. Present known tracking algorithm such as global stable tracking algorithm and high gain straightline algorithm, were implemented to multiple pressure vessel. A conventional PID control was implemented for comparison also. Experimental and computer simulation results are presented