一种考虑导弹高阶动态特性的非线性一体化导引控制策略

An Integrated Nonlinear Guide-Control Strategy with Missile's High Order Dynamic Nature in Consideratio

导弹拦截机动目标的过程中,弹体的动态特性和建模时的近似线性化都会对脱靶量和导引品质产生一定程度的影响。针对上述情况,在不依赖碰撞线附近线性化假设的情况下,建立了导弹的导引控制一体化状态模型,并应用滑模变结构理论提出一种考虑导弹高阶动态特性的非线性一体化导引控制策略,该策略综合考虑了导弹的导引特性和控制特性,可以有效应对目标大机动的逃逸方式,在不需要控制回路补偿的情况下,仍可取得良好的导引品质。

When the missile intercepted a maneuvering target, both the missile body＇s dynamic nature and its approximate linearization when modeling had effects on the miss distance and guide quality. To solve this problem, the article does not resort to the hypothesis of the linearization near collision course and builds an integrated guide-control model. Basing on sliding mode vari- able structure theory, the article proposes an integrated nonlinear guide-control strategy which takes into account both missile＇s control loop character and guidance loop character. This strategy can effectively resolve escape maneuver of the target so that a favorable guide quality is still achievable even if the control loop is not compensated.