Distributed cooperative guidance law construction method based on communication time-varying delay

A construction method and guidance law technology, applied in the general control system, adaptive control, control/adjustment system, etc., can solve problems such as failure of combat missions, and achieve the effect of improving communication anti-jamming capabilities

Active Publication Date: 2021-02-19
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

The advantage of this method is that the convergence speed of the cooperative command is fast; the disadvantage is that once the central node fails, the combat mission of the entire

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  • Distributed cooperative guidance law construction method based on communication time-varying delay
  • Distributed cooperative guidance law construction method based on communication time-varying delay
  • Distributed cooperative guidance law construction method based on communication time-varying delay

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specific Embodiment

[0083] In this embodiment, three missiles launched from different positions and angles are considered to attack an air target moving in a straight line at a uniform speed. Under the effect of the constructed control law, three missiles attack the target simultaneously from different angles, so as to verify the effectiveness of the constructed method. In the simulation, the communication between the three missiles uses figure 1 In the communication topology shown, the delay in communication between missiles is considered, and it is assumed that the longer the distance between missiles, the greater the communication delay, and there is a minimum delay in communication between missiles.

[0084] 1. Establish a mathematical model for the coordinated guidance of three missiles

[0085] Deriving equation (1) and converting it to the line-of-sight coordinate system, considering the three missiles assumed in this embodiment to attack the target at a constant speed in coordination, th...

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Abstract

The invention discloses a distributed cooperative guidance law construction method based on communication time-varying delay. According to the method, guidance models are divided into a sight line direction model and a sight line normal direction model, and guidance laws of the models are constructed respectively. In the sight direction, firstly, based on the improved multi-agent consistency theory, arrival time is selected as a state variable, under the condition that time-varying delay exists in communication between missiles, it is ensured that the arrival time of the missiles is consistentthrough the effect of a consistency protocol, and finally the purpose that the missiles attack the target at the same time is achieved. In the sight line normal direction, based on the sliding mode control theory, the sight line angle error and the sight line angular rate are selected as state variables, the sight line angle error and the sight line angular rate approach to 0 by constructing a sliding mode controller, and the missile attacks a target according to a preset angle. According to the method, the maximum delay constraint does not need to be considered, the parameters in the consistency convergence protocol can be dynamically changed according to the delay, and the multi-missile cooperative strike target under the communication time-varying delay is realized.

Description

technical field [0001] The invention belongs to the technical field of guidance, and in particular relates to a method for constructing a guidance law. Background technique [0002] With the increasing air defense and anti-missile technology, especially at the end of the missile attack, it is easy to be intercepted by the enemy's counter weapons, and various active / passive deception jamming devices make it difficult to identify the target. The traditional single-missile combat style is difficult to achieve precise and stable strikes on targets. When adopting the combat method of coordinated attack by multiple missiles, multiple missiles attack the target from different angles at the same time, which greatly increases the difficulty of interception and interference of the enemy's anti-missile system. Therefore, in recent years, multi-missile cooperative guidance has attracted more and more attention from domestic and foreign scholars and industrial circles. [0003] Accordi...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 方洋旺王志凯吴自豪马文卉邓天博
Owner NORTHWESTERN POLYTECHNICAL UNIV
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