ABSTRACT 1. Introduction 2. The Level Model 2.1. The non-linear model 2.2. The linear model 3. Dynamic of the lmmune Algorithm for Optimal Controller 3.1. The response of immune system 3.2. Antibodies in lmmune system 3.3. Interaction between antibodies 3.4. Dynamics of immune system 4. The Immune Algorithm Optimal Control System Design 4.1. Characteristics of boiler-turbine control system 4.2. Optimal controller design 4.3. The structure of coding for optimal control 5. Simulations and Discussions 5.1. Simulation results on aopha 0.6 5.2. Simulation Results On Alpha 0.75 5.3. Simulation Results On Alpha 0.98 6. Conclusions References