At first, the original system with twelve-order differential equation is linearized to a six-order system by the DFL theory, and then control laws are designed by classical control method.

• 首先以飞机原始非线性十二阶微分方程为对象，利用直接反馈线性化(DFL)理论对飞机原始非线性方程进行线性化，将原系统等效于一个六阶的线性系统。