Study on Engine Nominal System of Model Solution

Nominal system is a part of precise model which not contained the uncertainty of the controlled object and it is the key of the model solution. So it is extremely meaningful to study the optimal solution of the nominal system. This paper used three commonly methods for solving the nominal system has done a systematic study, then using LMI, μ analysis and synthesis, H∞ control theory for solving out of control respectively by calling the functions in MATLAB. Simulation and comparative analysis also were made and obtained similar results. So solving methods should be reasonably selected basing on the actual circumstances.