High-fault-tolerance initiating explosive device control method for Mars landing process

A control method and technology for pyrotechnics, which are applied in the directions of artificial satellites, astronautical equipment, and astronautical aircraft, etc., can solve the problem that the interface control unit cannot execute the detonation instruction of pyrotechnics, so as to improve the probability of successful landing and ensure effect of continuity

Active Publication Date: 2021-12-31
BEIJING INST OF CONTROL ENG
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  • Claims
  • Application Information

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Problems solved by technology

This design method involves the transmission of bus information. For example, when the interface control unit resets or shuts down when receiving the bus message, the interface control unit cannot execute the relevant pyrotechnic detonation instructions due to the bus communication for a long time without handshake.

Method used

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  • High-fault-tolerance initiating explosive device control method for Mars landing process
  • High-fault-tolerance initiating explosive device control method for Mars landing process
  • High-fault-tolerance initiating explosive device control method for Mars landing process

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] A high-fault-tolerant pyrotechnic product control method used in the Mars landing process. The on-board computer adopts a three-machine hot backup working mode, and the interface control unit adopts a two-machine cold backup working mode. The on-board computer controls the trim wing pressing and unlocking device, the trim wing expanding device, the pyrotechnics in the umbrella tube, the outsole connection and separation device, the landing buffer mechanism compression release device, the back cover connection and unlocking device and other pyrotechnics through the interface control unit. product detonation, including sending soft requests to the interface control unit through the bus and sending hard requests through hard wiring,...

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Abstract

The invention relates to a high-fault-tolerance initiating explosive device control method for a Mars landing process, aiming at a large dynamic and strong impact environment and a strict time sequence requirement when Mars atmosphere enters the landing process, on the basis of triggering in a bus communication mode, the dual-redundancy initiating explosive device control method is presented, wherein a spaceborne computer hard wire is adopted to directly control the initiating explosive device, and an interface control unit is notified to control the initiating explosive device through a bus message, so that the spaceborne computer and the interface control unit can timely send out an initiating explosive device control instruction according to sequential logic under normal conditions; therefore, the dual redundancy control logic of the initiating explosive device related instructions is realized, and the test verification of the initiating explosive device instructions is realized through the combined triggering use of the time sequence test ports of the spaceborne computer.

Description

technical field [0001] The invention relates to a high-fault tolerance pyrotechnic product control method used in the Mars landing process, and belongs to the technical field of extraterrestrial celestial body soft landing control. Background technique [0002] The Mars entry, descent and landing (Entry, Descent and Landing, EDL) process begins when the probe touches the Martian atmosphere and ends when it lands safely on the surface of Mars. This process has a short duration, strong autonomy, irreversible events, and a long communication delay between the device and the ground, so the ground cannot intervene in real time. The Mars EDL process involves the execution of multiple pyrotechnic devices, requiring any group of pyrotechnic devices to be detonated in a timely manner in strict accordance with the design sequence, otherwise it will affect the subsequent control and affect the safe landing. The pyrotechnics control involved in the EDL process mainly includes the deton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/10B64G1/24B64G1/64B64G5/00
CPCB64G1/105B64G1/244B64G1/645B64G5/00B64G1/1071Y02P90/02
Inventor 刘旺旺王晓磊赵宇王云鹏郝策徐李佳胡洪凯余志鸿陈尧杨晓龙李化云陈刚李佳威
Owner BEIJING INST OF CONTROL ENG
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