CAJ | 학술논문

针对燃料晃荡对旋翼飞行器燃料箱壁撞击产生的姿态扰动问题,采用质量-弹簧-阻尼模型表示燃料晃荡对系统的作用,通过理论分析与实验数据;确定飞行器控制电压与螺旋桨转速及升力之间的关系,建立燃料晃荡扰动下飞行器的非线性动力学模型,提出一种滑模变结构控制的方法,有效抑制了燃料晃荡带来的扰动. 进一步搭建了二自由度半实物仿真系统验证算法的优越性与实用价值,与尽可能优化参数的PID控制算法对比,提出的滑模变结构控制方法能够在较小的能量输入下更好地抑制燃料晃荡引起的扰动问题,使系统的姿态控制具有更为理想的鲁棒性.
침대연료황탕대선익비행기연료상벽당격산생적자태우동문제,채용질량-탄황-조니모형표시연료황탕대계통적작용,통과이론분석여실험수거;학정비행기공제전압여라선장전속급승력지간적관계,건립연료황탕우동하비행기적비선성동역학모형,제출일충활모변결구공제적방법,유효억제료연료황탕대래적우동. 진일보탑건료이자유도반실물방진계통험증산법적우월성여실용개치,여진가능우화삼수적PID공제산법대비,제출적활모변결구공제방법능구재교소적능량수입하경호지억제연료황탕인기적우동문제,사계통적자태공제구유경위이상적로봉성.
Fuel sloshing is the unwanted attitude disturbance of rotor aircraft which represents the force of the fuel impact the tank wall. The fuel sloshing model used for rotor aircraft represents each sloshing mode as a mass-spring-damper system. Then a nonlinear dynamic model was achieved by theoretical and empirical method to determine the relationship among the voltage, the speed of the propeller and the lift force. A sliding mode controller was developed and compared with a optimized PID controller in terms of fuel sloshing disturbance. Furthermore, the hardware in the loop simulation system with two degree of freedom was given to demonstrate the validity of the algorithms. The result shows that a little input effort can achieve a better robust performance by adopting the sliding mode controller than the PID controller.