Longitudinal control flight energy management method and system for unpowered aircraft

A technology of longitudinal control and energy management, applied in the control/regulation system, non-electric variable control, position/direction control and other directions, it can solve the problems of complex calculation process and inability to confine the energy of the aircraft, and achieve the effect of condensing energy

Active Publication Date: 2022-03-01
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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  • Application Information

AI Technical Summary

Problems solved by technology

Aircraft usually achieve energy management by adjusting the height of the flight path or in-plane maneuvering, such as the closed-circuit guidance method. When this method performs energy management, the calculation process is more complicated, and it may obtain a local optimal solution instead of an overall optimal solution, resulting in inability to Converging Aircraft Energy

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  • Longitudinal control flight energy management method and system for unpowered aircraft
  • Longitudinal control flight energy management method and system for unpowered aircraft
  • Longitudinal control flight energy management method and system for unpowered aircraft

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] see figure 1 As shown, the embodiment of the present invention provides an energy management method for longitudinally controlled flight of an unpowered aircraft, the method comprising the following steps:

[0030] S1: Calculation of dynamic pilot The specific calculation formula is Among them, S is the remaining range of the aircraft; S lim is the range threshold value of the aircraft, which is a threshold set according to the flight mission and is a fixed value; V is the speed of the aircraft, is the acceleration of the aircraft, C is the guidance constant, GM is the earth constant, and GM is 3.986005×10 14 m 3 / s 2 , R is the distance from the aircraft to the center of the earth, R t is the distance from the target point of the aircraft to the center of the earth, g is the acceleration of gravity, and θ is the track incli...

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Abstract

The invention discloses a longitudinally controlled flight energy management method, system, electronic equipment and computer-readable storage medium of an unpowered aircraft. The method includes the following steps: calculating the dynamic guide amount, calculating the normal guide amount of the longitudinal velocity, Calculate the normal guidance amount in the stable stage, and calculate the longitudinal guidance command of the aircraft. The present invention estimates the current energy of the aircraft by using the current state of the aircraft and the remaining range, designs the control strategy, and obtains the longitudinal guidance command of the aircraft. During the entire calculation process, it does not involve solving the extreme value, so it will not fall into the optimal solution, and can Effectively converge the energy of the aircraft. The calculation process of this method is relatively simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of aircraft flight control, in particular to a method and system for energy management of longitudinally controlled flight of an unpowered aircraft. Background technique [0002] For unpowered aircraft, especially for long-duration and long-distance flight missions, the energy deviation caused by the deviation of aerodynamic parameters and atmospheric density will increase over time, eventually leading to excessive energy dispersion at the end, and even causing the trajectory to diverge during the flight, which is not conducive to Later task handover. The purpose of energy management is to control energy accumulation deviation and prevent track divergence. The energy of an unpowered aircraft is designed according to its maximum range, and for general tasks, there will be a certain amount of energy left. The energy management control maneuver is mainly to calculate the excess energy by continuously predicti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/08G05D1/00G05D1/10
CPCG05D1/0808G05D1/101G05D1/0005
Inventor 朱正辉黄鑫鑫陈普华陈红艳田群方罗伟梁森李青付艺绮郭春霞
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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