A Forward Intercept Guidance Method Utilizing Direct Force-Aerodynamic Compound Control

Abstract

The invention discloses a direct force aerodynamic compound control method and a forward interception guidance method, and proposes a direct force design method for discretization through the impulse equivalent method on the basis of considering the characteristics of continuous aerodynamic force and discrete direct force, avoiding The complex control allocation problem is solved; according to the two-dimensional forward interception guidance motion model and the interception missile dynamics model, using time scale separation, the dynamic system composed of the particle kinematics of the interception missile and the target and the acceleration slow change subsystem can be seen The dynamic subsystem of the pitch angle velocity is regarded as a fast-varying subsystem, and the forward interception guidance law considering the dynamics of the direct force / aerodynamic compound control system is obtained through the tracking control design of the pitch angle velocity command. The present invention avoids complicated control allocation problems, and the design of the forward interception and guidance law conveniently considers the dynamics and characteristics of compound control, facilitates the interpolation calculation by using the nominal value of the aerodynamic coefficient, and is convenient for practical application.

Description

technical field [0001] The invention belongs to the technical field of direct force control methods and interception guidance laws, and in particular relates to a forward interception guidance method utilizing direct force aerodynamic compound control. Background technique [0002] For the interception of high-altitude, high-speed and large-moving targets, the typical head-on interception method will make the relative movement speed between the projectile and the target very large, and it is difficult for the seeker to detect the target; hard to accomplish. Therefore, OdedM.Golan et al. proposed a new forward pursuit interception (Head-Pursuit) guidance method (OdedM.Golan, TalShima. Headpursuitguidanceforhypervelocityinterception[C].NavigationandControlConference, CP-4885, AIAA, Washington, DC, 2004:1 -12.), the interception process is divided into two plane interception problems with mutually perpendicular channels, and a two-dimensional forward pursuit interception guida...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a forward interception guidance method using direct force aerodynamic compound control, which aims to avoid the problem of complex control distribution in the existing direct force aerodynamic compound control method and solve the existing The guidance law for forward pursuit and interception cannot conveniently and truly reflect the dynamics of the direct force-aerodynamic compound control system because it does not consider the dynamics of the projectile, or it needs to approximate the dynamics of the projectile with a first-order model even though it considers the dynamics of the projectile. Questions of dynamics and characteristics

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