摘要
为了建立能体现飞行器姿态变化及实际运动特性的航迹模型,提出了在光电对抗半物理仿真系统中利用变参数控制生成目标航迹的方法。该方法依据飞行轨迹控制原理,把飞机飞行动力学模型作为被控对象,在分析轨迹控制参数特点的基础上,构造了以控制误差为自变量的比例参数和微分参数函数模型。通过这些函数,变参数模型能够根据瞬时误差实时改变参数大小,从而适应飞行器轨迹运动过程中的非线性特点,减小生成航迹的误差。最后,利用某型飞机数据进行了数学仿真试验。结果表明:该方法产生的航迹与给定航迹最大距离相对误差为3.9%,稳定后相对误差为0.1%;航向最大相对误差为1.8%,稳定后相对误差为0.056%。另外,该方法具有通用性,可以满足仿真系统中对目标航迹模拟的要求。
To establish an accurate target track model for capturing both the flight states and real movement characteristics,a new method to generate a target track based on the variable parameter control is proposed in the hardware-in-loop simulation system for photoelectric countermeasures.On the basis of the flight control principle,a flight dynamic model is regarded as a control object,then function models of proportional parameters and differential parameters are constructed on analyzing the characteristics of flight track control.By making the control error as the independent variable of the model,it can modify its parameters to adapt the nonlinear trait during the course of track control and to reduce the track error.Finally,a mathematical simulation is carried out by taking airplane data as examples.Compared with the setting track,the largest relative error of distance is 3.9% and the steady-state relative error of distance is 0.1%.Moreover,the largest relative error of tracking course is 1.8%,and its steady-state relative error is 0.056%.The simulation results validate the universality of the method and show that the model can meet the need of target track simulation in simulation systems.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2010年第5期1128-1134,共7页
Optics and Precision Engineering
基金
中国科学院长春光学精密机械与物理研究所三期创新工程资助项目
关键词
光电对抗
目标航迹
轨迹控制
变参数模型
仿真
photoelectric countermeasure
target track
flight track control
variable parameter model
simulation
