Thruster assembly based on four-thrust structure and regulation and control method thereof

Abstract

The invention relates to the technical field of satellites, in particular to a thruster assembly based on a four-thrust structure and a regulation and control method thereof. The thruster assembly comprises a first thruster, a second thruster, a third thruster and a fourth thruster which are symmetrically arranged in the center of each other and a switch modulation controller connected with the four thrusters correspondingly, wherein an intersection point of nozzle centers of the four thrusters is located on a rolling shaft of the satellite, nozzle center connecting lines of the first thrusterand the third thruster are parallel to an azimuth axis of the satellite, and nozzle center connecting lines of the second thruster and the fourth thruster are parallel to a pitch axis of the satellite. The regulation and control method comprises four thruster normally open thrust operation, or a first thruster and a third thruster normally open thrust operation, or a second thruster and a fourththruster normally open thrust operation. The thruster assembly and the regulation and control method thereof solve the problems that the manufacturing cost is expensive, the reliability is low, the requirement for thrust installation is high, and the thrust reverser assembly is not prone to install and use and the like.

Description

technical field [0001] The present application relates to the field of satellite technology, in particular to a thruster assembly based on a four-thrust structure and a control method thereof. Background technique [0002] Commercial small satellites are developing rapidly, and several low-orbit small satellite constellation plans have been built, such as Iridium, Globalstar, Orbcomm, and Advanced Research and Global Observation Satellite (ARGOS). There are also many planned small satellite constellations. The establishment of a commercial satellite constellation has a notable feature: multiple satellites with one arrow, which requires the satellite to have the ability to adjust the orbit and phase of the satellite in orbit. Deploy to the required orbital location. [0003] There are three types of orbital thruster designs commonly used in the prior art: [0004] The first type includes a large-thrust orbit-changing engine and a three-axis attitude control thruster. For a...

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Problems solved by technology

[0007] This application provides a thruster assembly based on a four-thrust structure and its control method to simultaneously solve the problems of high cost, low reliability, and high requirements for thrust installation, making it difficult to install and inconvenient to use.

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