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High-precision measuring method of separating characteristic of hot work separating device

A technology of pyrotechnic separation device and separation characteristics, which is applied in the direction of speed/acceleration/shock measurement, measurement device, measurement acceleration, etc., can solve the problems of circuit signal interference and general measurement accuracy, and achieve high precision, stable measurement performance, and easy installation simple effect

Inactive Publication Date: 2011-08-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

The existing separation characteristic measurement method is mainly the on-off target line method, but this method is easily interfered by the circuit signal, and the measurement accuracy is average

Method used

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  • High-precision measuring method of separating characteristic of hot work separating device
  • High-precision measuring method of separating characteristic of hot work separating device
  • High-precision measuring method of separating characteristic of hot work separating device

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Embodiment Construction

[0015] (1) Use the laser displacement sensor to measure the separation characteristic parameters of the pyrotechnic separation device in real time. The separation characteristic parameters include the displacement-time relationship of the pyrotechnic separation device, separation time, separation speed, separation acceleration, and separation impulse. The separation characteristic of the separation device is an indirect measurement method, which does not directly contact the pyrotechnic separation device, and will not affect the motion characteristics of the pyrotechnic separation device under test. (2) According to the measurement idea of ​​the present invention, design a separation characteristic measurement system of pyrotechnic separation device, its composition comprises tested pyrotechnic separation device, reflector, laser displacement sensor, fixed support of laser displacement sensor, data acquisition system, Ignition control box and power supply, wherein the separatio...

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Abstract

The invention provides a high-precision measuring method of the separating characteristic of a hot work separating device, which gives consideration to the simple installation of a measuring structure, the safety and reliability of a measuring system and the high measuring precision. The uncertainty of the relative standard of the measuring system which is matched with the method is 0.184%. Compared with the conventional method, the measuring performance is more stable and the measuring precision is higher. The method not only can measure the displacement-time relationship, the separating time, the separating speed, the separating acceleration and the separating impulse of the hot work separating device with high precision, but also can be widely applied to measuring the motion characteristic of the motion parts of the other work done hot work product, and has good application foreground for accurately testing and researching the separating motion characteristic of the hot work separating device.

Description

technical field [0001] It relates to a high-precision measurement method for the motion characteristics of pyrotechnic products, especially the separation characteristics of pyrotechnic separation devices. Valves and similar pyrotechnic devices, pyrotechnic separation devices, also known as explosive separation devices, include various explosive bolts, explosive nuts and similar pyrotechnic separation devices. The characteristic parameters of pyrotechnic separation include object displacement-time relationship, separation time, separation speed, separation acceleration, and separation impulse. Background technique [0002] The pyrotechnic separation device is a separation mechanism commonly used in aircraft and vehicles. The common feature of the separation is that the separation part moves linearly after being driven by the pyrotechnic power source, and is separated from the separation system. When the structure of the separation device is finalized, the separation part sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01P3/68G01P15/16
Inventor 严楠叶耀坤毕文辉曾雅琴何爱军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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