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Flight control method of high-speed helicopter

A flight control and helicopter technology, which is applied in the field of high-speed helicopter control and flight control of high-speed helicopters, to achieve the effects of enhancing stability, good convergence, improving command tracking ability and anti-interference ability

Pending Publication Date: 2022-07-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the small disturbance linearization theory also has some limitations, that is, the system must have sufficient stability margin to support the establishment of the linearization condition, so when designing the controller in the neighborhood of the design point, in addition to focusing on the performance itself, we must also pay attention to The relationship between the size of the neighborhood and the stability margin

Method used

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  • Flight control method of high-speed helicopter
  • Flight control method of high-speed helicopter
  • Flight control method of high-speed helicopter

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Embodiment Construction

[0024] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] like figure 1 Shown is a control structure of a high-speed helicopter flight control method, the method includes the following five steps.

[0026] Step 1: Select the high-speed helicopter dynamics model as the research object, and obtain the desired speed tracking command of the flight system according to the flight mission of the high-speed helicopter. The desired speed tracking command of the flight system includes: forward flight speed u c , lift speed v c and yaw speed w c , and take the flight system desired speed tracking command as the input of the controller.

[0027] Step 2. Establish a high-speed helicopter non-affine nonlinear dynamic system, which is represented by two subsystems:

[0028]

[0029]

[0030] In formula (1) and formula (2), x 1 is the relatively slowly chan...

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Abstract

The invention discloses a flight control method of a high-speed helicopter, and belongs to the technical field of calculation, reckoning or counting. For multi-mode control of a high-speed helicopter, based on an increment dynamic inverse control framework composed of an inner attitude control loop and an outer speed control loop, a Pi-Sigma neural network is adopted to compensate for an increment dynamic inverse control error, and the stability, rapidity and robustness of a control system are ensured.

Description

technical field [0001] The invention relates to a high-speed helicopter control technology, and specifically discloses a high-speed helicopter flight control method, which belongs to the technical field of calculation, calculation or counting. Background technique [0002] Helicopter is one of the most successful bionic machines in human history, but due to the structure of conventional helicopters, the maximum flight speed generally cannot exceed 350m / h. Proposing a new type of high-speed helicopter suitable for the changeable external environment to break through the inherent limitations of conventional helicopters has become an important direction for future helicopter development. The successful test flight of V-22 Osprey, Ka-92 and Eurocopter X3 indicates that high-speed helicopters have gradually become important armed forces of various countries, and finding a set of control methods for high-speed helicopters is of indispensable significance to improve flight safety p...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042Y02T90/00
Inventor 郑峰婴熊博威沈志敏范涛许梦园王峰陈宇昂
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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