针对某型高超声速飞行器纵向巡航段模型对高度和速度的机动控制问题,研究并比较了采用吸气式超燃冲压发动机与火箭发动机作动力的飞行控制方法上的不同;重点分析了机体-推力耦合特性、高度-速度耦合特性以及超燃冲压发动机工作状态对飞行姿态的巨大影响;提出了油门和升降舵的协调控制方法,并进行了线性二次型控制律设计.通过仿真验证了该设计方法的有效性. Aiming at the maneuvering control of altitude and speed in the longitudinal cruise segment model of a hypersonic vehicle, this paper studies and compares the differences of flight control methods using aspirated scramjet and rocket engine as the motive force. Coupling characteristics, height-speed coupling characteristics and working condition of scramjet were studied. The coordinated control method of throttle and elevator was put forward and linear quadratic control law was designed. The simulation results show that the design method Effectiveness.