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Vertical and horizontal loosely coupled online trajectory planning method and electronic device

A trajectory planning and lateral trajectory technology, which is applied in the directions of space navigation equipment, space navigation equipment, space navigation vehicle guidance devices, etc. It can solve the problem of large amount of calculation in the design of vertical and horizontal tight coupling of the trajectory, the inability to cover the database method, the deviation of initial conditions, etc. The problem is to avoid the deviation of initial conditions, reduce the amount of calculation, and reduce the impact.

Active Publication Date: 2022-08-05
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem of the present invention is to design an online trajectory planning method for vertical and horizontal loosely coupled energy management at the end of the aircraft to solve the three main problems in the traditional TAEM technology
One is that the database method cannot cover any initial conditions, resulting in initial condition deviations
The third is the large amount of calculation and poor real-time performance of the trajectory vertical and horizontal tight coupling design.

Method used

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  • Vertical and horizontal loosely coupled online trajectory planning method and electronic device
  • Vertical and horizontal loosely coupled online trajectory planning method and electronic device
  • Vertical and horizontal loosely coupled online trajectory planning method and electronic device

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Experimental program
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Effect test

Embodiment 1

[0245] Algorithm performance is extensively verified through Monte Carlo simulation analysis. Assuming that the initial position coordinates, flight path angle, heading angle, and speed of the aircraft are normal random variables, the mean and standard deviation of the distribution are shown in Table 1. TAEM Terminal P 3 The state parameters are shown in Table 2. Randomly simulate 100 trajectories, see the simulation results Figure 19-25 .

[0246] Define the initial unit mass energy as E 0 , as shown in formula (59). Design initial point E 0 with Design Voyage L TAEM relationship such as Figure 19 shown. Depend on Figure 19 , by E 0 L can be obtained TAEM . Then by L TAEM and z P0 ,according to Figure 5 Available heading correction cylinder position coordinates x C . x C It needs to be limited to a reasonable range, as shown in formula (60), so as to leave enough distance for the approach landing segment and the straight flight segment. limit x C after...

Embodiment 2

[0259] This embodiment provides an electronic device including: a memory storing executable instructions; a processor, where the processor runs the executable instructions in the memory, so as to realize the above-mentioned vertical and horizontal loosely coupled online trajectory of the end-of-aircraft energy management planning method.

[0260] The electronic device according to the present embodiment includes a memory and a processor.

[0261] The memory is used to store non-transitory computer readable instructions. In particular, memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), among others. The non-volatile memory may include, for example, read only memory (ROM), hard disk, flash memory, and the like.

[0262] The processor may be a central ...

Embodiment 3

[0266] This embodiment provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-described vertical and horizontal loosely coupled online trajectory planning method for aircraft terminal energy management is implemented.

[0267] A computer-readable storage medium according to an embodiment of the present disclosure having non-transitory computer-readable instructions stored thereon. When the non-transitory computer-readable instructions are executed by the processor, all or part of the steps of the aforementioned methods of various embodiments of the present disclosure are performed.

[0268] The above-mentioned computer readable storage media include but are not limited to: optical storage media (eg CD-ROM and DVD), magneto-optical storage media (eg MO), magnetic storage media (eg magnetic tape or removable hard disk), Media for rewriting non-vol...

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Abstract

The invention provides a vertical and horizontal loosely coupled online trajectory planning method and an electronic device. The planning method includes: planning the three-dimensional trajectory target range and lateral trajectory; planning the longitudinal reference profile based on the sequential convex optimization algorithm, the longitudinal reference profile includes the energy-angle of attack profile, and the initial target range of the longitudinal reference profile is consistent with the three-dimensional trajectory target range; using the trajectory The prediction model is used to predict the three-dimensional trajectory of the aircraft; evaluate the range loss caused by the tilting maneuver, and correct the target range of the longitudinal reference profile according to the range loss. Compared with the vertical and horizontal tight coupling planning, the method of the invention compensates for the loss of range and reduces the influence of the tilt maneuver on the longitudinal motion state of the end of the three-dimensional trajectory. The present invention only uses the numerical optimization method-sequential convex optimization method to plan the longitudinal section, and uses the geometric method to plan the lateral trajectory, which significantly reduces the amount of calculation and improves the real-time performance.

Description

technical field [0001] The invention belongs to the technical field of guidance and control, and in particular relates to a vertical and horizontal loosely coupled online trajectory planning method for aircraft terminal energy management, an electronic device and a storage medium. Background technique [0002] Terminal energy management (TAEM) technology is mainly used in reusable vehicles (RLVs). The U.S. space shuttle was the first to apply terminal energy management technology, and completed 135 unpowered gliding approaches and landings, achieving great success. After the retirement of the space shuttle, the X-37B applied terminal energy management technology and successfully completed several landing and approach missions at Vandenberg Air Force Base in California and the Kennedy Space Center. Italy has also carried out research on TAEM technology. [0003] Due to the limitation of computer computing power, the early terminal energy technology has two problems: First, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/24
CPCB64G1/242
Inventor 刘哲艾邦成周月荣关发明陈冰雁
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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