导引头隔离度对末制导炮弹制导控制的影响

摘要

为了研究导引头隔离度对末制导炮弹控制系统稳定性的影响,给出了导引头无量纲隔离度的概念,建立了末制导炮弹的制导控制系统模型;在忽略所有环节动力学的末制导炮弹简化制导控制模型中,推导了由初始指向误差角引起的末制导炮弹位置误差解析解,并进行了无量纲化;定义了表征末制导炮弹制导精度的量,在考虑所有环节动力学的情况下,引入了末制导炮弹的实际参数,分析了导引头无量纲隔离度对末制导炮弹制导精度的影响.得到了末制导炮弹控制系统在导引头无量纲隔离度x和无量纲量B1所形成平面上的稳定域;当x和B1超出稳定域时,末制导炮弹控制系统就会失稳.%To study the effect of seeker isolation on the stability of control system of Terminal Guided Projectile（TGP）,the concept of dimensionless seeker isolation was proposed,and the guidance and control system model of TGP was built.In the simplified model that neglected the dynamic of all parts,TGP position error ＇ s analytic solution caused by initial heading error was deduced,and nondimensionalization was carried out.The parameter representing the guidance precision of TGP was defined,and the dynamic of all parts was considered.The real parameter of TGP was introduced.The effect of dimensionless seeker isolation on guidance precision was analyzed.The stable domain of TGP control system on the x-B1 plane was obtained.While x and B1 exceed the stable domain,the control system of TGP will be instable.