A Multiple Leading Angle Steering Method Based on Fuzzy Confidence Superposition

A technology of leading angle and confidence level, applied in vehicle position/route/height control, instrument, adaptive control, etc., can solve the problems of insufficient guidance accuracy, achieve good effect, clear physical meaning, and high guidance accuracy Effect

Active Publication Date: 2022-06-28
NAVAL AVIATION UNIV
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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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  • A Multiple Leading Angle Steering Method Based on Fuzzy Confidence Superposition
  • A Multiple Leading Angle Steering Method Based on Fuzzy Confidence Superposition
  • A Multiple Leading Angle Steering 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, however, can be embodied in various 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 will 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 the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known solutions have not been s...

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Abstract

The invention discloses a multi-lead angle guidance method superimposed on the basis of fuzzy confidence, which is characterized in that a plurality of positions are selected according to the distance between the aircraft and the target, and the lead angle of the aircraft is estimated from the sight angle of the aircraft. Secondly, for multiple lead angles, fuzzy rules are adopted, and it is considered that the later the extraction time and the closer the lead angle to the target, the greater the impact on the final miss amount, so a higher confidence level is set. Then compare the lead angle information with the superimposed confidence degree with the yaw angle of the aircraft to obtain the lead error signal and perform nonlinear transformation to obtain a nonlinear signal, and then obtain the line of sight angle error signal by comparing the aircraft line of sight angle with the attitude angle, and finally Proportionally weighted superposition of the above signals, and integration to obtain the final guidance signal, output to the aircraft attitude control system to control the aircraft to accurately fly to the target. The advantage of this method is that the physical meaning of the fuzzy logic is clear, and it has higher guidance precision than the single front guidance.

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 study of aircraft guidance problems, simplified models and simple proportional guidance algorithms were used in the early days, and some guiding conclusions of guidance parameters can be obtained by mathematically accurate theoretical analysis. However, it is still difficult to give theoretical analysis results for accurate prediction and calculation of off-target amounts. Or even if the theoretical results are obtained, in actual shooting, due to the complexity of the model, it is difficult to agree with the theoretical results. In order to pursue higher guidance accuracy, more and more guidance systems use complex guidance algorithms with multi-parameters. At this time, theoretical analysis can only p...

Claims

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Application Information

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Patent Type & Authority Patents(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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