弹性飞行器的传感器位置设计

为了消除飞行器的气动弹性与控制系统之间的互相影响,必须适当选择传感器的安装位置。用现代控制理论的方法研究了弹性飞行器传感器的平面设置,提出了带常参数的最优过程模型,建立了旨在抑制弹性振动的性能指标。把庞特里亚金极大值原理与样条拟合方法结合起来,得到了用于速率陀螺设置的简单公式。实例分析和计算表明,利用该方法所得的结果比根轧迹方法简单、准确。

POSITIONING OF SENSORS FOR FLEXIBLE FLIGHT VEHICLES

In order to eliminate the interaction between aeroelasticity and flight control of vehicles, the positions of mounted sensors must be chosen properly. By means of modern control method, sensor positions in design of flexible flight vehicles are studied in this paper. For general plane positioning, a model of optimal process with constant parameters and a performance index for suppressing elastic vibration are set up. Combining Pontryagin's Maximum Principle with spline function approximation method, we have developed a simple formula (13), with which the optimal position of the rate gyro can be determined. Analysis and calculation of a practical example show that the results is correct, and is simpler and more accurate with the method developed in this paper than that with root-locus method.