Nonlinear Inferential Parallel Cascade Control

nonlinear modeling and cascade control design for multi effect falling film evaporators

Artificial Intelligence for Inferential Control of Crude Oil Stripping Process

Stripper columns are used for sweetening crude oil, and they must hold product hydrogen sulfide content as near the set points as possible in the faces of upsets. Since product    quality cannot be measured easily and economically online, the control of product quality is often achieved by maintaining a suitable tray temperature near its set point. Tray temperature control method, however, is n...

Invariance control for a class of cascade nonlinear systems

We consider the control of partially linear cascade systems using switching control of the states of the linear subsystem. We give suucient conditions under which feedback of the linear states with switching gains guarantees both exponential stability of the linear subsystem and positive invariance of a compact region in state space. Semi-global asymptotic stabilization follows under some addit...

Switching Control for Multi-Input Cascade Nonlinear Systems

In this paper we extend earlier work on switching control of single-input nonlinear systems to the multi-input case. We consider the control of partially linear cascade systems and give sufficient conditions under which feedback of the linear states with switching gains guarantees both exponential stability of the linear subsystem and positive invariance of a compact region in state space. Asym...

Application of Cascade Nonlinear Control for a CSTR

—The article deals with the cascade nonlinear control of a chemical continuous stirred tank reactor. The control is performed in primary and secondary control-loops where the primary controlled output of the reactor is a concentration of the main reaction product and the secondary output is the reactant temperature. A common control input is the coolant flow rate. The controller in the primary ...