The invention discloses a servo elastic stability augmentation method based on multi-sensor information fusion, and belongs to the field of flight control, and the method specifically comprises the steps: extracting a main bearing structure of an aircraft for modeling, and calculating the modal frequency, modal shape and shape slope of the aircraft under the condition of no constraint; then the aircraft, a first sensor, a steering engine and a control system are combined to form a closed-loop servo elastic system; drawing an open-loop Bode diagram by calculating an open-loop system transfer function from the manipulated variable to the feedback quantity of the control system, and determining a danger frequency and a corresponding danger intrinsic mode; arranging a second angular velocity sensor on the aircraft based thereon; calculating weighting coefficients of the signals of the two angular velocity sensors, correcting the weighting coefficients, and introducing the weighted signal # imgabs0 # instead of the original signal # imgabs1 # into a control system; and by comparing system characteristics, the servo elasticity stability of the aircraft is ensured under the condition that the phase and amplitude of the rigid body are not influenced.
本发明公开了一种基于多传感器信息融合的伺服弹性增稳方法,属于飞行控制领域,具体为:提取飞行器的主要承载结构进行建模,计算在没有任何约束情况下的飞行器模态频率、模态振型及振型斜率;然后结合飞行器、第一传感器、舵机和控制系统,组成闭环伺服弹性系统;通过计算操纵量到控制系统反馈量的开环系统传递函数,画开环伯德图,确定危险频率以及对应的危险固有模态;基于此将第二角速度传感器布置在飞行器上;进而计算两个角速度传感器信号的加权系数并进行修正,将加权后的信号#imgabs0#代替原始信号#imgabs1#引入到控制系统中;对比系统特性,在不影响刚体相位和幅值的情况下保证飞行器的伺服弹性稳定。
Servo elastic stability augmentation method based on multi-sensor information fusion
一种基于多传感器信息融合的伺服弹性增稳方法
2024-11-19
Patent
Electronic Resource
Chinese
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