Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A High Precision Dynamic Thrust Test System of Micro Pyrotechnic Actuator

A dynamic thrust, testing system technology, applied in measuring devices, force/torque/work measuring instruments, measurement of elastic deformation force through measuring gauges, etc. Different problems, different weights, etc., to achieve the effect of improving installation efficiency and measurement consistency, introducing small errors, and simple structure

Inactive Publication Date: 2017-09-29
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A High Precision Dynamic Thrust Test System of Micro Pyrotechnic Actuator
  • A High Precision Dynamic Thrust Test System of Micro Pyrotechnic Actuator
  • A High Precision Dynamic Thrust Test System of Micro Pyrotechnic Actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] exist figure 1 In , the strain sensor is installed at a distance from the fixed end i of the cantilever beam, and the thrust F generated by the piston of the pyrotechnic device acts on the position B of the cantilever beam, thus causing the cantilever beam to bend, and the strain gauge senses the stress change signal ε i , processed and recorded by the signal processor. After getting the strain signal ε i After that, the thrust F is calculated by the following formula.

[0022]

[0023] Where: ε i is the strain value at i, W is the bending section coefficient, W=bh 2 / 6, h is the height of the rectangular section of the cantilever beam, b is the width of the rectangular section of the moment cantilever beam, and E is the elastic modulus of the cantilever beam material. ε obtained by the strain sensor i The time-varying curve can accurately measure the thrust-time curve of the piston part of the pyrotechnic device.

[0024] figure 2 The size and material of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01L1/04G01L1/06
Inventor 严楠鲍丙亮张静伟张良高光泽王刚李朝振蒋俊程俊郑飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com