Controller design for continuous stirred tank reactor based on feedback linearization

For nonlinear characteristics of continuous stirred tank reactor, the conventional solution is linearization on the control point. But this method has some disadvantage, that is, when the control point moves, the system response error will become larger. To solve this problem, the paper proposes the I/O feedback linearization. For the continuous stirred tank reactor, the paper selects the appropriate system output, and does continuous derivation for each component until the control input variable appears in the expression. When certain conditions are met, the system can be linearized globally, through the substitution between the control input variables. In order to test the feasibility of the method, the paper builds simulation model, and the simulation results show that The system output has a good tracking ability, besides, the System shows the fast response and reliable stability.