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Measuring device of discharge current low frequency oscillation of Hall electric thruster under in-orbit operation state

A technology of electric thruster and operating state, which is applied to measurement devices, measurement of electrical variables, measurement of current/voltage, etc., can solve problems such as the inability to easily obtain low-frequency oscillating waveforms

Active Publication Date: 2014-02-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing technology cannot easily and accurately obtain complete and credible low-frequency oscillation waveforms, and to provide a measuring device for the low-frequency oscillation of the discharge current of the Hall electric thruster in the state of orbital operation

Method used

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  • Measuring device of discharge current low frequency oscillation of Hall electric thruster under in-orbit operation state

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specific Embodiment approach 1

[0014] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the measurement device for the low-frequency oscillation of the discharge current of the Hall electric thruster in the on-rail operating state described in this embodiment, the Hall electric thruster includes a DC power supply 1, and the Hall electric thruster in the on-rail operating state The measuring device for low-frequency oscillation of the thruster discharge current includes a transformer 2, a high-frequency filter resistor R1, a high-frequency filter capacitor C1, a rectifier diode D1, a current limiting resistor R2, a filter capacitor C2, a discharge resistor R3 and an on-board remote sensing measurement device 3;

[0015] The negative pole of the DC power supply 1 is connected to the cathode of the Hall electric thruster;

[0016] The positive pole of the DC power supply 1 is connected to the same-named end of the primary coil L1 of the transformer 2, and the differ...

specific Embodiment approach 2

[0026] Specific Embodiment 2: The working principle will be described below in conjunction with a specific embodiment.

[0027] An additional coil is wound on the inductance L1=0.1mH to form a transformer 2; the discharge current oscillation amplitude is sampled by means of electromagnetic induction, and the turns ratio n of the primary and secondary coils is 1:1.4. Then connect high-frequency filter resistor R1=100Ω and high-frequency filter capacitor C1=33nF in parallel to filter the high-frequency signal to obtain a low-frequency oscillation signal. The -3dB frequency potential of the filter circuit composed of R1 and C1 is 48KHz. After sampling the low-frequency oscillation signal, the rectifier diode D1 is connected in series in the circuit for rectification. The rectifier diode D1 has a forward voltage drop, so if it works in the nonlinear region, it will bring a nonlinear quantity to the signal and affect the measurement results, so this part uses the detection characte...

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Abstract

The invention discloses a measuring device of discharge current low frequency oscillation of a Hall electric thruster under the in-orbit operation state, and belongs to the technical field of Hall electric thrusters. The device solves the problem that in the prior art, the complete and reliable low-frequency oscillation waveforms can not be easily, conveniently and precisely obtained. The device comprises a transformer, a high frequency filter resistor R1, a high frequency filter capacitor C1, a rectifier diode D1, a current-limiting resistor R2, a filter capacitor C2, a discharge resistor R3 and a satellite-borne remote sensing measuring device, wherein a direct-current power supply negative electrode is connected with a cathode of the Hall electric thruster, a direct-current power supply positive electrode is connected with a dotted terminal of a primary side coil L1 of the transformer, a non-dotted terminal of the primary side coil L1 is connected with an anode of the Hall electric thruster, the dotted terminal of an auxiliary side coil of the transformer is connected with one end of the high frequency filter resistor R1, the other end of the high frequency filter resistor R1 is connected with one end of the high frequency filter capacitor C1 and an anode of the rectifier diode D1 at the same time, the other end of the high frequency filter capacitor C1 is connected with a non-dotted terminal of the auxiliary side coil, one end of the filter capacitor C2 and one end of the discharge resistor R3, a cathode of the rectifier diode D1 is connected with one end of the current-limiting resistor R2, the other end of the current-limiting resistor R2 is connected with the other end of filter capacitor C2 and the other end of the discharge resistor R3, and the satellite-borne remote sensing measuring device is in parallel connection at the two ends of the discharge resistor R3.

Description

technical field [0001] The invention relates to a measuring device for the low-frequency oscillation of the discharge current of a Hall electric thruster in an orbital running state, and belongs to the technical field of the Hall electric thruster. Background technique [0002] The monitoring of the low-frequency oscillation of the Hall electric thruster is very necessary in the aerospace application process. At the same time, the low-frequency oscillation characteristics of the thruster also reflect the working state of the thruster to a certain extent. The monitoring of the low-frequency oscillation of the thruster is conducive to judging the thrust The working state of the thruster can be used to optimize and improve the operating parameters of the thruster, and also provide valuable experimental data for further improving the design of the thruster. However, the low-frequency oscillation frequency range of the discharge current during the working process of the Hall elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R19/00
Inventor 韩亮于达仁魏立秋
Owner HARBIN INST OF TECH
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