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Vibration table negative feedback failure detection system and detection method of component excess particle collision detection device

A technology of collision detection and detection system, which is applied in the field of particle collision detection devices for redundant particles of devices, can solve problems such as damage to equipment or staff, large vibration acceleration, vibration drop, etc., and achieve the effect of eliminating the impact of the table top of the vibration table

Active Publication Date: 2021-03-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that excessive vibration acceleration will be generated when the negative feedback of the vibrating table fails in the existing particle collision detection device for redundant objects, which may shake off or fly the tested part on the vibrating table, causing the surrounding equipment or work to be damaged. damage to personnel

Method used

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  • Vibration table negative feedback failure detection system and detection method of component excess particle collision detection device
  • Vibration table negative feedback failure detection system and detection method of component excess particle collision detection device
  • Vibration table negative feedback failure detection system and detection method of component excess particle collision detection device

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specific Embodiment approach 1

[0022] Specific implementation mode one: refer to figure 1 , figure 2 Specifically explain this embodiment, the vibrating table negative feedback failure detection system of the component excess particle collision detection device described in this embodiment, the system includes a main controller 2 and a drive signal detection comparison circuit 1,

[0023] The main controller 2 includes a load estimation module 2-2, an acceleration signal comparison module 2-1, a protection module 2-3 and a threshold calculation module 2-4,

[0024] The threshold calculation module 2-4 is used to obtain the full-load drive signal threshold according to the vibration frequency set by the vibration table at low frequencies,

[0025] At high frequency, the acceleration signal threshold is obtained according to the vibration acceleration set by the vibration table,

[0026] At intermediate frequency, according to the vibration frequency and vibration acceleration set by the vibration table, t...

specific Embodiment approach 2

[0043] Specific embodiment 2: This embodiment is to further explain the vibration table negative feedback failure detection system of the component excess particle collision detection device described in the specific embodiment 1. In this embodiment, it is also used to preset the acceleration signal is too low Threshold, according to the preset acceleration signal low threshold, half-load acceleration accumulation sum threshold and the accumulative value of the acceleration signal collected after the shaking table vibrates, the specific process of judging whether the shaking table is in a full-load state or a half-load state at an intermediate frequency is as follows: :

[0044] If the accumulated value of the acceleration signal collected after vibration is higher than the cumulative sum threshold of the half-load acceleration signal or lower than the low threshold of the acceleration signal, it means that the vibration table is currently in a half-load state. If the accumulat...

specific Embodiment approach 3

[0045] Specific embodiment three: This embodiment is to further explain the vibrating table negative feedback failure detection system of the component excess particle collision detection device described in the second specific embodiment. In this embodiment, according to the threshold value of the three driving signals Any driving signal threshold and the driving signal of the driver detected by the peak hold circuit, the specific process of controlling the level signal output is as follows:

[0046] Compare any of the three drive signal thresholds with the drive signal detected by the peak hold circuit. If the drive signal is higher than any of the three frequency drive signal thresholds, it means that the negative feedback of the vibrating table is invalid. Then Output high level, if the driving signal is lower than any threshold of the three frequencies, it means that the negative feedback of the vibrating table is effective, then output low level.

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Abstract

The invention discloses a vibrating table negative feedback failure detection system and a detection method of a component excess particle collision detection device, and relates to the technical field of component excess detection. The present invention aims to solve the problem that excessive vibration acceleration will be generated when the negative feedback of the vibrating table fails in the existing particle collision detection device for redundant objects, which may shake off or fly the tested part on the vibrating table, causing the surrounding equipment or work to be damaged. The problem of damage to personnel. First, select the threshold required for failure detection according to the different vibration frequencies of the vibrating table; again, when the vibrating table is running, judge whether the negative feedback of the vibrating table of the device is invalid according to the threshold, and if it fails, the drive of the driver is pulled down. signal to stop the vibration table from vibrating. It is used to eliminate the phenomenon that the table top of the vibration table hits the bottom after the negative feedback of the vibration table fails.

Description

technical field [0001] The invention relates to a collision detection device for component redundant particles. The invention belongs to the technical field of device redundant object detection. Background technique [0002] Aerospace relays are widely used in launch vehicles, artificial satellites, missiles, space shuttles, spacecraft and their supporting ground measurement and control equipment, etc. The working environment is harsh, and its reliability directly affects the reliability of these equipment. In the production process of aerospace relays, some material debris may be sealed inside the relay, and these excess materials may randomly swim in the sealed relay, which may cause the relay to fail or malfunction, causing various accidents. Therefore, the aerospace relay redundant detection Technology has important practical value. At present, Particle Impact Noise Detection (PIND) technology is commonly used to detect the excess of aerospace relays. According to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 翟国富王国涛燕会臻郜雷震
Owner HARBIN INST OF TECH