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Research on Application of Missile Guidance Laws Based on Fuzzy Logic Control

Author: ZhengXiaoHua
Tutor: SongShenMin
School: Harbin Institute of Technology
Course: Control Science and Engineering
Keywords: Classic guide Fuzzy Logic Compound Guidance Law Variable Structure Theory A Dynamic Compensating
CLC: TJ765
Type: Master's thesis
Year: 2010
Downloads: 133
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Abstract


The function of the missile guidance system to guide the missile to hit the target with the biggest hit probability. To ensure guided high-precision and small-guidance error, need guidance technology adaptive characteristics. Therefore, a single use of the traditional guidance law has been unable to meet the increasingly complex requirements interception conditions. In this paper, missile guidance law research background, and conducted in-depth research in the composite guidance and variable structure guidance in fuzzy logic. Specific work as follows: First of all, on the basis of two-dimensional kinematic model missile interception of proportional navigation, augmented proportional navigation and Bang-Bang guide basic classical guidance law simple analysis and simulation, the simulation results consistent with the theory. Secondly, based on the characteristics of each of the series combined guidance thinking for basic classical guidance law proposed a complex proportional navigation, augmented proportional navigation and Bang-Bang guide classic fuzzy guidance law composite Guidance Law . In order to solve the problem of the target maneuver acceleration unpredictable practical application, the design of the second-order extended state observer. At the same time, in order to eliminate the interference noise, introduces the based on fal functions feedback tracking differentiator filter. By fuzzy composite guidance law and classical guidance law interception performance simulation, we can see the amount of off-target and interceptor performance fuzzy composite guidance law are better than several other basic classical guidance law. Finally, according to the line of sight angular rate and relatively close to the rate intercept information using fuzzy logic proportional guidance law of the traditional constant value gain coefficient improved fuzzy variable gain proportional navigation guidance law. Maneuvering target motion characteristics of the two-dimensional kinematic model is extended to the three-dimensional case and variable structure guidance law pushdown export compensation autopilot dynamic characteristics of this model. Fuzzy proportional guidance law and this variable structure guidance law, the fuzzy logic composite variable structure guidance law of proportional navigation items and dynamic compensation available fuzzy the composite variable structure guidance law. Compared to the value of the variable structure guidance law and often, this fuzzy variable structure guidance law high guidance accuracy. At the same time, the comparative analysis of a the interceptor performance compensation by the conventional variable structure fuzzy variable structure guidance law of the autopilot dynamic characteristics. The simulation results demonstrate ignore autopilot dynamic characteristics have a great impact on the missile interceptor performance. Meanwhile, the fuzzy logic compensation dynamic characteristics of fuzzy variable structure guidance law Compound Guidance Law interception performance has improved.

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CLC: > Industrial Technology > Arms industry > Rockets, missiles > Missile > Guidance and Control
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