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

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

Inactive Publication Date: 2010-12-08
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,

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. It does not directly contact the pyrotechnic separation device and will not affect the movement 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 the pyrotechnic separation device, which consists of the tested pyrotechnic separation device, reflector, laser displacement sensor, fixed bracket of laser displacement sensor, data acquisition system, Ignition control box and power supply, in which the separation ...

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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 measuring method for the movement characteristics of work pyrotechnics, especially the separation characteristics of pyrotechnics separation devices. Work pyrotechnics include pyrotechnics separation devices, pushers, pin pullers, cutters, explosive switches, and explosions. Valves and similar pyrotechnic devices, pyrotechnic separation devices, also known as explosive separation devices, include all kinds of explosive bolts, explosive nuts and similar pyrotechnic separation devices. Pyrotechnic separation characteristic parameters include object displacement-time relationship, separation time, separation speed, separation acceleration, separation impulse. Background technique [0002] The pyrotechnic separation device is a commonly used separation mechanism in aircrafts and vehicles. The commonality of separation is that the separation component is driven by the pyrotechnic power source and then moves linearly and separates f...

Claims

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Application Information

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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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