Planet power descending branch anti-interference guidance control method with online track generation function

Abstract

A planet power descending branch anti-interference guidance control method with an online track generation function is designed for a system state space model in which a planet lander is interfered by multiple sources in a power descending branch. The planet power descending branch anti-interference guidance control method with the online track generation function comprises the steps that firstly, a planet lander power descending branch system state space model with multi-source interference is established; then, based on the state space model with interference, an interference observer with partial information known is designed; finally, based on the interference observer, the composite guidance control method with the online track generation function is designed. The planet power descending branch anti-interference guidance control method has the advantages that a track can be generated online, anti-interference performance is strong, the landing position and speed of the lander are high in precision, and the planet power descending branch anti-interference guidance control method is suitable for accurate guidance control over the planet lander in the power descending branch in the spaceflight field.

Description

technical field [0001] The invention relates to an anti-interference guidance control method for on-line generation of trajectory in a planetary power descent section, which is mainly used in online generation of trajectory in a power descent section of a planetary lander and anti-interference and precise landing. Background technique [0002] Since the 1960s, Mars exploration activities, especially landing exploration activities, have become more and more frequent. However, due to the long distance and the existence of a large number of uncertainties, many difficulties will be encountered in the process of Mars exploration. From the original "Mars Probe 1" to the most recent "MAVEN" Mars probe, there are more than 40 Mars missions in the world, of which only 7 landing missions were successful. [0003] In the Mars landing mission, the landing process includes the Mars atmosphere entry stage, the parachute stage and the power descent stage. This process determines the succe...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide an anti-interference guidance control method for online generation of the trajectory of the planetary power descent section in view of the disturbed power descent process of the planetary lander, which solves the problem of online trajectory planning of the planetary lander during the power descent process With the problem that the landing accuracy is reduced due to interference, the trajectory is generated online and the landing accuracy of the planetary lander is improved.

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