Derivation of system matrices from nonlinear dynamic simulation of jet engines
非线性系统
物理
计算机科学
控制理论(社会学)
作者
N. Sugiyama
出处
期刊:Journal of Guidance Control and Dynamics [American Institute of Aeronautics and Astronautics] 日期:1994-11-01卷期号:17 (6): 1320-1326被引量:28
标识
DOI:10.2514/3.21350
摘要
Most multivariable control design methodologies are linear theories and utilize a linearized plant model. Since accuracy of a linearized plant model affects the quality of a control system designed by those methods, a reasonable linearized plant model that adequately simulates the plant must be prepared. This paper describes a derivation method of such a model in the form ofABCD system matrices from nonlinear dynamic simulation. System matrices of a two-spool turbofan engine are derived and compared to the actual engine data. The effect of perturbation size and linearization formula over a linearized model are discussed. A corrected form of the system matrices is introduced to extend the data base to the whole flight envelope.