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Synchronous working method and system for double thrusters of electric propulsion system

A technology of synchronous work and thrusters, which is applied in thrust reversers, machines/engines, and the use of plasma, etc., can solve problems such as minute-level errors, and achieve good results and meet the needs of work tasks

Active Publication Date: 2022-01-14
BEIJING INST OF CONTROL ENG
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AI Technical Summary

Problems solved by technology

The entire ignition process lasts about ten minutes, but there is a certain degree of uncertainty in the time required for the ignition process, and there will be errors on the order of minutes

Method used

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  • Synchronous working method and system for double thrusters of electric propulsion system

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Embodiment Construction

[0055] The invention optimizes the ignition process of the ion thruster in a targeted manner, and performs distributed control on the ignition process of the ion thruster. After the two thrusters have completed the pretreatment of the discharge chamber, the control method of synchronously loading the screen grid voltage to generate thrust realizes dual The ion thrusters are generated synchronously; in the process of boosting the thrust in the early stage, the anode current is gradually submitted according to the preset parameters and procedures through the slow start method, so as to avoid the difference in the thrust of the two thrusters in the early stage caused by the inconsistent thermal deformation of the thrusters; In the thrust stabilization stage, the closed-loop control method is used to ensure that the thrust of the two thrusters remains consistent; after the thruster generates thrust, in order to deal with the instability of the system thruster caused by the interrupt...

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Abstract

The invention discloses a synchronous working method and system for double thrusters of an electric propulsion system. The method is suitable for a synchronous working mode of multiple thrusters of a spaceflight electric propulsion system. According to the method, an ignition process is optimized, synchronous thrust generation of double thrusters is achieved through the functions of anode slow start, closed-loop control and the like, and the thrust magnitude is basically consistent; and through fault diagnosis logic, the problem of inconsistent thrust of the thruster caused by accidental abnormality of a single thruster is solved. Attitude instability caused by accumulation of angular momentum of a spacecraft is avoided.

Description

technical field [0001] The invention belongs to the field of space propulsion systems, and in particular relates to a method and system for synchronous operation of dual thrusters of an electric propulsion system. Background technique [0002] The SJ-20 satellite is the technical verification satellite of the DFH-5 platform, and is equipped with a 5kW electric propulsion system according to the standard configuration of the DFH-5 platform. The system is composed of 4 ion electric thrusters. Overall, the mission requirements of the orbit transfer mode are put forward for the electric propulsion system. During the orbit transfer phase, the whole star can provide higher power for the electric propulsion system and can support the work of dual thrusters. [0003] In the orbit transfer stage, when the dual thrusters work at the same time, the thrust vector directions of the two thrusters are required to be consistent, and the midpoint of the line connecting the thrust action poin...

Claims

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Application Information

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IPC IPC(8): F03H1/00
CPCF03H1/0087F03H1/0006F03H1/0018F03H1/0025F03H1/0031
Inventor 邹达人高俊李永何刚丁凤林李宗良韩亮刘镇星李晨光
Owner BEIJING INST OF CONTROL ENG
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