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Multi-preposed angle guiding method based on fuzzy confidence superposition

A technology of leading angle and confidence level, which is applied in the direction of vehicle position/route/height control, instrument, non-electric variable control, etc., can solve the problem of insufficient guidance accuracy, achieve good effect, high guidance accuracy, and solve the weight The effect of matching problems

Active Publication Date: 2021-02-02
NAVAL AVIATION UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-lead angle guidance method superimposed on the basis of fuzzy confidence, and then at least to a certain extent overcome the problem of insufficient guidance accuracy due to the limitations and defects of related technologies

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  • Multi-preposed angle guiding method based on fuzzy confidence superposition
  • Multi-preposed angle guiding method based on fuzzy confidence superposition
  • Multi-preposed angle guiding method based on fuzzy confidence superposition

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Embodiment Construction

[0048] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solutions have not been shown or descr...

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Abstract

The invention discloses a multi-preposed angle guiding method based on fuzzy confidence superposition, which is characterized in that a plurality of positions are selected according to the distance between an aircraft and a target, and the preposed angle of the aircraft is estimated according to the sight angle of the aircraft; secondly, aiming at multiple preposed angles, a fuzzy rule is adopted,the closer the extraction time is and the closer the preposed angle is to the target, the larger the influence on the final miss distance is, and therefore the higher confidence coefficient is set; the preposed angle information superposed with the confidence coefficient is compared with the yaw angle of the aircraft to obtain a preposed error signal, nonlinear transformation is carried out to obtain a nonlinear signal, the sight angle of the aircraft is compared with the attitude angle to obtain a sight angle error signal, and proportional weighted superposition is carried out on the signals, integrating is conducted to obtain a final guide signal, and the final guide signal is outputted to an aircraft attitude control system to control the aircraft to accurately fly to a target. The method has the advantages that the fuzzy logic physical significance is clear, and the guidance precision is higher than that of single preposed guiding.

Description

technical field [0001] The invention belongs to the field of aircraft guidance and control, in particular to a high-precision fuzzy guidance control method using a fuzzy system and a fuzzy algorithm to superimpose multiple leading angles. Background technique [0002] In the research of aircraft guidance problems, simplified models and simple proportional guidance algorithms were used in the early stage, and some guiding conclusions of guidance parameters can be drawn from mathematically accurate theoretical analysis. However, it is still difficult to give theoretical analysis results for the precise prediction and calculation of the off-target amount. Or even if the theoretical results are obtained, in actual shooting, it is difficult to agree with the theoretical results due to the complexity of the model. In order to pursue higher guidance accuracy, more and more guidance systems currently adopt multi-parameter complex guidance algorithms. At this time, theoretical analy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08G05B13/02
CPCG05D1/0808G05B13/0275
Inventor 闫实马培蓓雷军委纪军王玲玲
Owner NAVAL AVIATION UNIV
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