Unlock instant, AI-driven research and patent intelligence for your innovation.

A safety factor-based safety evaluation method for complex terrain

A technology with safety factor and complex terrain, which is applied in the field of deep space exploration and can solve problems such as complex terrain

Active Publication Date: 2019-02-19
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Future planetary exploration missions require probes to land in areas of scientific value. Such areas often have complex terrain, which poses a great challenge to landing accuracy and landing safety.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A safety factor-based safety evaluation method for complex terrain
  • A safety factor-based safety evaluation method for complex terrain
  • A safety factor-based safety evaluation method for complex terrain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with the accompanying drawings and examples.

[0023] Without loss of generality, this example selects the Mars landing process for analysis, and adopts optimal control guidance under the fixed inertial system at the landing site, and the analytical form of the guidance law is

[0024]

[0025] Among them, a is the control acceleration, Δv and Δr are the difference between the current speed / position of the detector and the speed / position at the predetermined landing point, t go Indicates the remaining landing time, and g is the local gravitational acceleration. The direction of the acceleration vector a is the direction of the main thrust T. Such as figure 2 As shown, the angle between the direction of the thrust T and the vertical z-axis It can be calculated by formula (3)

[0026]

[0027] In Figure ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a complex terrain safety degree assessment method, in particular to a complex terrain safety degree assessment method based on safety factors and belongs to the technical field of deep space exploration. According to the complex terrain safety degree assessment method based on the safety factors, the concept of safety factors is proposed and specified to be applied to complex terrain safety degree assessment, a quantitative method is provided for study of safety of the landing task on complex terrain, an assessment result is further graded, and the safety degree of the complex terrain is obtained. Through adjustment of specific forms of the safety factors, the method can be widely applied to earlier stage task planning design and task execution processes of various planet landing tasks and has the functions of obstacle avoidance, improvement of landing performance, reduction of failure risk and the like.

Description

technical field [0001] The invention relates to a method for evaluating the safety degree of complex terrain, in particular to a method for evaluating the safety degree of complex terrain based on safety factors, and belongs to the technical field of deep space exploration. Background technique [0002] Future planetary exploration missions require probes to land in areas of scientific value. Such areas often have complex terrain, which poses great challenges to landing accuracy and landing safety. In order to solve this problem, in the design phase of the mission and the execution phase of the mission, it is necessary to conduct technical analysis and evaluation of the candidate landing areas of the target celestial body to obtain the suitable landing areas and provide reference for the subsequent landing work. At present, scholars at home and abroad have proposed a number of methods for comprehensively evaluating landing areas and landing sites. Most of these methods are s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
CPCG06F30/20G06T17/05
Inventor 崔平远葛丹桐高艾于正湜朱圣英徐瑞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY