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A Method of Active Flutter Suppression of Elastic Wing Based on l1 Adaptive Control Algorithm

A self-adaptive control, wing-flying technology, applied in the direction of offensive equipment, projectiles, weapon types, etc., to achieve the effect of short adjustment time, good effect and good stability

Active Publication Date: 2022-04-15
西安智芯通达科技有限公司
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Problems solved by technology

In the process of changing the sweep angle, the aerodynamic parameters, aerodynamic center, center of gravity, and moment of inertia of the aircraft will change greatly, and the conditions for flutter caused by the elastic structure and aerodynamic coupling will also change. Flutter suppression for missiles presents significant challenges

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  • A Method of Active Flutter Suppression of Elastic Wing Based on l1 Adaptive Control Algorithm
  • A Method of Active Flutter Suppression of Elastic Wing Based on l1 Adaptive Control Algorithm
  • A Method of Active Flutter Suppression of Elastic Wing Based on l1 Adaptive Control Algorithm

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Embodiment Construction

[0036] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0037] The invention takes the variant loitering bomb as the research object, and proposes a method suitable for the active flutter suppression of the wing of the variant loiter bomb during the process of changing the sweep angle. First, the binary airfoil with leading and trailing edge control surfaces is taken as the research object, and the aeroelastic system model of the binary airfoil is established; then the flutter velocity of the system is solved, and the flutter analysis is carried out on the model; The aeroelastic system model of the binary wing is established to design the L1 adaptive controller; finally, the flutter suppression effect of the L1 adaptive controller in the process of changing the sweep angle is simulated and analyzed.

[0038] The present invention comprises the following steps:

[0039] Step 1. According to the wing type, layout and m...

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Abstract

The invention relates to an active flutter suppression method for a wing based on an L1 self-adaptive control algorithm. Firstly, a binary wing section with leading and trailing edge control surfaces is taken as a research object, and an aeroelastic system model of a binary wing is established; Then the flutter velocity of the system was solved, and the flutter analysis was carried out on the model; then, the L1 adaptive controller was designed for the aeroelastic system model of the binary wing; finally, the L1 self-adaptive controller was simulated and analyzed in the process of changing the sweep angle. Adapt controller's chatter suppression effect.

Description

technical field [0001] The invention belongs to the technical field of projectile body control. This technical invention takes the variant loiter projectile as the research object, and establishes the aeroelastic system model of the binary projectile wing on the basis of the binary wing section with the front and rear edge control surfaces, and proposes An algorithm based on L1 adaptive control, which actively suppresses the flutter of the missile wings during the process of changing the sweep angle of the variant loitering missile. Background technique [0002] The rudder surface of the traditional missile is relatively small, so that it has a relatively fast speed and can quickly attack the target, but the blanking time is relatively short, and it can only attack the target that has been discovered, and does not have the ability of "second strike". Then loitering bombs appeared. Loitering bombs are a new type of ammunition that can cruise over the target area for a long ti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42B10/02
CPCF42B10/02
Inventor 智永锋
Owner 西安智芯通达科技有限公司
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