Gas source pressure estimation method based on electronic depressurizing system

Abstract

The invention discloses a gas source pressure estimation method based on an electronic depressurizing system. The gas source pressure estimation method is used for estimating gas source pressure of ahigh-pressure gas cylinder under the condition that a high-pressure pressure sensor of the existing electronic depressurizing system is damaged through recording sensor data before and after the normal state pressure control process, calculating feature parameters of the electronic depressurizing system, recording data before and after the pressure control process after the high-pressure pressuresensor is damaged and inversely deducing the pressure of the high-pressure gas cylinder according to the feature parameters of the electronic depressurizing system. The gas source pressure estimationmethod overcomes the problem that component damage requires resetting in the prior art, and does not affect the design state and reliability of the original product.

Description

technical field [0001] The invention relates to a gas source pressure estimation method based on an electronic decompression system, which belongs to the field of aerospace decompression propulsion. Background technique [0002] In my country's current satellite propulsion system, the pressure of the gas pressurized gas generally carried is relatively high, about 15-30MPa, but the actual pressure used on the satellite is generally only 0-2MPa. The gas is decompressed to reduce the system pressure to 0-2MPa before use. In the electronic decompression system of the prior art, it is mainly composed of a high-pressure pressure sensor, an air source on-off self-locking valve, a high-pressure isolation self-locking valve, a pressure solenoid valve, a buffer gas cylinder, a low-pressure pressure sensor and a control unit. Open the pressure solenoid valve to gradually inflate the gas source into the buffer gas cylinder to increase the pressure of the buffer gas cylinder. The system...

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Problems solved by technology

[0004] The technical problem solved by the present invention is: Aiming at the problem in the prior art that the high-pressure pressure sensor of the electronic decompression system is easily damaged and the reading of the gas source pressure of the high-pressure gas cylinder cannot be measured, a method for estimating the gas source pressure based on the electronic decompression system is proposed

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