直升机半滚倒转机动飞行控制算法研究

对直升机半滚倒转机动动作开展机理分析,将机动动作进行分段设计。在半滚段设计滚转角速度保持,根据滚转角调整总距输入量;在俯冲拉起段设计俯仰角速度保持,根据俯仰角调整总距输入量,并在阻尼回路引入自抗扰控制算法,以提高控制系统的扰动抑制能力。针对有风/无风 2 种飞行环境,通过视景仿真技术对 UH 60 直升机开展仿真,结果表明,直升机可以在 4.5 s 内完成半滚倒转机动飞行,验证了该设计控制策略是合理的,飞行控制律具有良好的抗扰性能。

Research on Split s Maneuver Flight Control Algorithm for Helicopter

Based on the mechanism analysis of helicopter half roll reverse maneuver , the maneuver is designed in sections.The roll angle rate holding control is designed , the collective is adjusted according to the roll angle in the half-roll stage.The pitch angle rate holding control is also designed , with the collective is adjusted according to the pitch angle during the pull-up stage.The active disturbance rejection control algorithm is introduced into the damping loop to improve the disturbance resisting capability of the control system.The UH-60 helicopter is used by visual simulation technology for both windy and normal flight environments.The numerical results show that the helicopter? can complete the Split s maneuvering flight within 4.5 s , which verifies that the control strategy designing in this paper is reasonable and the flight control law has a good anti-disturbance performance.