基于目标运动方程的引导函数模型

A Guidance Function Model Based on Target Motion Equation

在大惯量武器系统的跟踪瞄准及其系统性能试验中,火控系统的引导控制对实现平稳调炮起到了重要作用。分析了传统引导函数具有形式多样、计算复杂的局限性,提出了一种新的引导函数模型,模型以带参数的多项式为基础,引入了系统姿态角函数、目标运动角函数和引导时间,要求模型的角位置、角速度和角加速度在引导起始时刻与系统姿态角无衔接突变、在引导结束时刻与目标运动角无衔接突变,并以此为条件求解出了模型参数,确定了引导函数形式。通过仿真给出了角度静态调转、目标跟踪、目标动态切换和正弦周期运动四种不同引导需求下的引导效果,仿真结果表明,引导函数的信号很好地实现了角位置、角速度和角加速度的平稳衔接,为大惯量武器系统跟踪瞄准及性能试验时的引导控制提供了有效方法。

In the tracking,aiming and performance test of large inertia weapon system,the guidance control of fire control system plays an important role in achieving smooth gun adjustment.Limitations of the traditional guidance function with various forms and complex calculation were analyzed and a new guidance function model was proposed.Based on the polynomial with parameters,the system attitude angle function,the target motion angle function and the guidance time were considered in the model.The angular position,angular velocity and angular acceleration should have no sudden change in connection with the system attitude angle at the beginning of guidance,and have no sudden change in connection with the target motion angle at the end of guidance.Based on this condition,the model para-meters were solved and the guidance function form was determined.The guidance effect under four different guidance requirements,including angle static rotation,target tracking,target dynamic switching and sinusoidal periodic motion was given by simulation.The simulation results show that signals of the guidance function well realize the smooth connection of the angular position,angular velocity and angular acceleration,and provide an effective method for the guidance control during the tracking,aiming and performance test of the large inertia weapon system.