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Independent earth orienting control method of Martian probe

A Mars probe and ground-oriented technology, which is used in the control of finding targets, astronomical navigation, etc. It can solve the problem that the distance between Mars and the earth cannot be remotely controlled in real time, and achieve the effect of increasing reliability and reducing configuration requirements.

Active Publication Date: 2013-04-03
上海航天控制工程研究所
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Problems solved by technology

[0002] When developing Mars probes in China, when performing Mars exploration missions, the data transmission antenna must first be oriented to the ground to ensure that the scientific detection data can be downloaded. In deep space exploration, there is no direct earth sensor that can measure the attitude information of the ground. The orbit of Mars and the Earth and the ephemeris recursion can be carried out independently on the planet to determine the orientation reference to the Earth. In addition, because the distance between Mars and the Earth is too far to carry out real-time remote control, the Mars probe must be able to autonomously capture the Earth and align it with any attitude. Therefore, it is necessary to develop an autonomous ground orientation technology for Mars rover

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  • Independent earth orienting control method of Martian probe
  • Independent earth orienting control method of Martian probe
  • Independent earth orienting control method of Martian probe

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Embodiment Construction

[0013] When the Mars probe enters the full attitude to capture the earth, it first calculates the ground orientation reference based on the system clock value on the star, and performs the ground orientation maneuver. After the ground maneuver is completed, it enters the ground orientation steady state control to complete the ground data transmission. The specific implementation in each mode is as follows.

[0014] Such as figure 1 As shown, the ground orientation attitude reference is the vector r pointing from Mars to the Earth em and the normal vector h of the earth's orbit e Sure. The line connecting Mars with the earth and pointing to the earth is +Zre direction, and the vector r of Mars pointing to the earth em and the normal vector h of the earth's revolution plane e The normal of the plane is +Xre, and the Yre axis is obtained according to the right-handed coordinate system rule. The calculation process of the ground orientation datum is as follows:

[0015] Calcu...

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Abstract

The invention discloses an independent earth orienting control method of a Martian probe. The method can be used for completing full-attitude earth capturing and earth orienting when the Martian probe is at any attitude, and only takes a star sensor for measuring and a counteractive flywheel as an executing component for providing control moment. According to the independent earth orienting control method, the measuring value of the star sensor can be directly utilized, the process of determining the attitude by a filtering algorithm is eliminated, and thus a gyroscope-free safe mode can be realized. Compared with the prior art, the independent earth orienting control method is independent from an earth sensor and a gyroscope, can complete the full-attitude earth capturing and earth orienting independently, and has high practicability and popularization values.

Description

technical field [0001] The invention relates to the attitude control technology of the Mars probe to the earth orientation, especially for the Mars probe to complete the orientation to the ground under the condition of any attitude, only using the star sensor as the measuring part, and the reaction flywheel as the executive part to provide the control torque. The measured value of the star sensor is directly used, and the attitude does not need to be determined through a filtering algorithm, which conforms to the principle of minimum hardware configuration. Background technique [0002] When developing Mars probes in China, when performing Mars exploration missions, the data transmission antenna must first be oriented to the ground to ensure that the scientific detection data can be downloaded. In deep space exploration, there is no direct earth sensor that can measure the attitude information of the ground. The orbit of Mars and the Earth and the ephemeris recursion are car...

Claims

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Application Information

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IPC IPC(8): G05D1/12G01C21/02
Inventor 尹海宁聂章海周连文李芳华杜宁蔡陈生袁彦红
Owner 上海航天控制工程研究所
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