Multi-stage depressed collector tiny discharge detection method for K-waveband space traveling wave tube for high-flux satellite

Abstract

The invention relates to the technical field of discharge detection and discloses a K-waveband space traveling wave tube multistage depressed collector micro discharge detection method for a high-flux satellite, a monitoring object is a time domain current waveform of each electrode power supply, a continuous triggering mode is generally selected when an oscilloscope is manually tested, a system is automatically triggered, waveform data can be continuously acquired, and detection accuracy is greatly improved; an edge trigger +Auto trigger mode is used for a K-waveband 200W space traveling wave tube micro discharge phenomenon software control scheme; two processing modes are adopted in the micro discharge monitoring process of the space traveling wave tube, a, a software processing process without a micro discharge phenomenon; and b, a software processing process in which a tiny discharge phenomenon occurs. According to the multistage depressed collector tiny discharge detection method for the K-band space traveling wave tube for the high-flux satellite, a detection system is established, specifications are established for manufacturing and screening of the high-power space traveling wave tube for the high-flux satellite represented by the K-band 200W space traveling wave tube in the future, and reliability of in-orbit application products is improved.

Description

technical field [0001] The invention relates to the technical field of discharge detection, in particular to a detection method for extremely small discharges collected by multi-stage depressurization of K-band space traveling wave tubes for high-throughput satellites. Background technique [0002] At present, most communication and broadcast satellites, especially high-throughput communication satellites, use space traveling wave tubes (hereinafter referred to as traveling wave tubes) as power transmitters. Since traveling wave tubes working in outer space are not replaceable and maintainable, higher DC voltages are usually used in traveling wave tubes to obtain long-term (>15 years) high-efficiency operation, but this increases the occasional high-voltage micro-discharge The possibility of microdischarge was first discovered in January 1997 from Ku-band satellite telemetry anomalous anode voltage event. According to long-term analysis and research, the energy of micro-...

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a high-throughput satellite K-band space traveling wave tube multi-stage step-down collection ultra-fine discharge detection method, which has been designed and built in the K-band 200W space traveling wave tube old A hardware system capable of continuously monitoring the time-domain current waveforms of each pole of the TWT for a long time during the refining process, and a software system capable of analyzing, judging and storing the tiny discharge phenomena of the TWT during the aging process is designed. The data is divided into measured value data and waveform data, which avoids the advantages of low software efficiency and poor reliability caused by excessive data volume, and solves the problem that the probability of occurrence can be reduced by strictly controlling material processing and system assembly, but it cannot be completely Eliminate, and the randomness is relatively large, which will have a certain impact on the continuous operation of the satellite payload system business

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