Nonlinear and bilinear models for chemical reactor control

Self-repairing nonlinear control and its application to chemical reactor

Against sensor failures, this paper presents a new design method for a self-repairing nonlinear control system (SRNCS). The proposed system can automatically replace the failed sensor with healthy backup if the sensor failure is found. The nonlinear detection filter guarantees exact and early fault detection, and the failure can be detected within a finite time prescribed by a design parameter ...

application of affine gray-box neural models for nonlinear control of chemical processes

Development of Tubular Chemical Reactor Models for Control Purposes

A generalized nonlinear mathematical model for fixed-bed tubular chemical reactors with cooling is proposed. The model is suitable for simulation experiments. A strategy, focused on simplifying and adapting the "primary" model to control applications is shown. This procedure is driven through the so-called "pseudohomogeneous" form of the model until a final description which is linear and relat...

Feedback Linearization Optimal Control Approach for Bilinear Systems in CSTR Chemical Reactor

This paper considers the optimal control problem for the bilinear system based on state feedback. Based on the concept of relative order of the output with respect to the input, first we change a bilinear system to a pseudo linear system model through the coordinate transformation. Then based on the theory of linear quadratic optimal control, the optimal controller is designed by solving the Ri...

Input constrained funnel control with applications to chemical reactor models

Error feedback control (in the presence of input constraints) is considered for a class of exothermic chemical reactor models. The primary control objective is regulation of a setpoint temperature T∗ with prescribed accuracy: given ¿ 0 (arbitrarily small), ensure that, for every admissible system and reference setpoint, the regulation error e = T − T∗ is ultimately smaller than (that is, ‖e(t)‖...