High-precision dynamic thrust test system for miniature pyrotechnic actuating devices

Abstract

The invention discloses a high-precision dynamic thrust test system for miniature pyrotechnic actuating devices. The high-precision dynamic thrust test system comprises the miniature pyrotechnic actuating devices, appropriate-strength small-size cantilever beams, small-size strain sensors, a signal conditioner, a digital acquisition system, miniature pyrotechnic actuating device fixing clamps and the like. Compared with the traditional measurement methods, the high-precision dynamic thrust test system has the advantages that kinetic characteristics of a plurality of miniature pyrotechnic actuating devices can be simultaneously measured in one time, a thrust-time relationship of a whole stroke can be obtained by one-time thrust measurement, the thrust interference influence on tested samples is low, and a measurement system has the characteristics of safety, stability, high measurement accuracy and the like; the operating principle of the test system disclosed by the invention has very good popularization and application prospects in the aspects of test methods for accurately measuring kinetic characteristics, such as thrust and displacement, of the pyrotechnic actuating devices.

Description

Technical field [0001] The invention relates to a test system for output thrust of a pyrotechnic device, in particular to a high-precision dynamic thrust test system for a miniature pyrotechnic device, belonging to the technical field of pyrotechnic product testing. Background technique [0002] The miniature pyrotechnic actuating device is small in size, light in weight, high in power and quick in action, and can meet the special requirements that mechanical actuating devices cannot achieve, and is widely used in the release mechanism of the fuze safety system. Among them, the output performance of the miniature pyrotechnic device, that is, the thrust performance, is the key to its successful application. There are two traditional methods for measuring the thrust performance of pyrotechnic devices: the push load method and the pressure sensor method. The push load heavy object method is to load a certain weight of load such as a weight on the piston of the pyrotechnic devi...

AI Technical Summary

Problems solved by technology

However, the weight load in this system cannot represent the actual application situation. The measured thrust is also different with different weights, and the size and thrust level of the weight cart are not suitable for the measurement of the thrust-time relationship of the miniature pyrotechnic device.

[0004] It can be said that the existing thrust test methods only judge the performance of the pyrotechnic device from a qualitative or semi-quantitative perspective, and it is not yet possible to conduct a comprehensive performance evaluation of the pyrotechnic device

In order to meet the technical requirements of modern micro-electromechanical systems, it is difficult to continue to simply adopt the existing technologies or combinations in the literature, and it is necessary to explore new testing ideas to solve the above-mentioned technical bottlenecks

Images