Direct force and aerodynamic force composite control method and forward-direction interception guidance method

Abstract

The invention discloses a direct force and aerodynamic force composite control method and a forward-direction interception guidance method, and provides a direct force design method which carrying out discretization through an impulse equivalence method on the basis of considering characteristics of continuous aerodynamic force and characteristics of discrete direct force, so that a complex control distribution problem is solved. According to a two-dimensional forward-direction interception guidance motion model and an interceptor missile kinetic model and by means of time scale separation, a dynamical system formed by a particle kinematics and accelerated speed slow subsystem of an interceptor missile and a target is regarded as a slow subsystem, a pitch angle speed dynamic subsystem is regarded as a fast subsystem, and a forward-direction interception guidance rule with dynamic conditions of a direct force/aerodynamic force composite control system taken into account is obtained through tracking control design of a pitch angle speed instruction. According to the direct force and aerodynamic force composite control method and the forward-direction interception guidance method, the complex control distribution problem is solved, the dynamic conditions and characteristics of composite control are conveniently taken into account through the design of the forward-direction interception guidance rule, interpolation calculation can be carried out through nominal values of aerodynamic coefficients conveniently, and practical application is convenient.

Description

technical field [0001] The invention belongs to the technical field of a direct force control method and an interception guidance law, and in particular relates to a direct force aerodynamic compound control method and a forward interception guidance method. 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, Oded M.Golan et al. proposed a new forward pursuit and interception (Head-Pursuit) guidance method (Oded M.Golan, Tal Shima. Head pursuit guidance for hypervelocity interception[C].Navigation and Control Conference, CP- 4885, AIAA, Washington, DC, 2004:1-12.), divided the interception process into two plane interception problems with mutually perpendicular channels, and established a two-dimensional forw...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a direct force aerodynamic compound control method and a forward intercept guidance method considering the dynamics of the direct force aerodynamic compound control system, aiming at avoiding the complicated control required b...

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