坦克瞄准线稳定系统的系统辨识方法研究

System Identification Method Research for Tank Stabi1ized Sight System 

摘要:

坦克瞄准线稳定系统复杂的内部结构导致机理建模的准确性大大降低,提出了利用经典阶跃响应法与遗传算法相结合的方法对某型坦克瞄准线稳定系统伺服控制回路进行系统辨识；通过DSP系统与三次样条插值数据处理测得了某种工况下的瞄准线稳定系统阶跃响应曲线；以先验知识为基础确定待辨识系统模型阶次,并利用改进遗传算法辨识模型参数,从而获取被控对象的模型;用阶跃响应性能指标误差评价法对系统辨识方法的效果进行了验证,结果表明,该方法能准确地实现瞄准线稳定系统的模型辨识。

Abstract:

Buliding model for Tank Sight Stabilized System by traditional mechanism method is difficult because of its complex internal structure. Proposes a methed which combines classical step response method and the genetic algorithm to identify a certain type Tank Sight Stabilized System. Obtains the step response curve of Sight Stabilizing platform in certain conditions based on DSP system and Cubic spline methed. Determines the order of the model based on priori knowledge, identifies parameter of the model using GA. Finally checked the effective of the methed by using step response property label error evaluating method. The result shows that the method can be identified precisely with the identification model of Tank Sight Stabilized System System.