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Explosion load identification method and system for pyrotechnic actuator

A technology of a pyrotechnic actuator and an identification method, which is applied in the field of load identification, can solve the problems of the actuation time of the pyrotechnic actuator, the large influence of the load peak value, and the inability to accurately describe the influence of the external structure, so as to achieve the effect of improving the reliability of the launch.

Pending Publication Date: 2021-11-05
SHANGHAI INST OF ELECTROMECHANICAL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dense explosion test cannot accurately describe the influence of the external structure on the combustion of the pyrotechnic actuator
However, the external structure has a great influence on the actuation time and peak load of the pyrotechnic actuator.

Method used

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  • Explosion load identification method and system for pyrotechnic actuator
  • Explosion load identification method and system for pyrotechnic actuator
  • Explosion load identification method and system for pyrotechnic actuator

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Embodiment

[0121] The invention provides a method for identifying the explosive load of a pyrotechnic actuator. The technical solution of the present invention includes: constructing a measurement system for the load identification method generated by the combustion of ballistic fuel in the pyrotechnic actuator; sensor, rotating shaft, acceleration sensor, angle sensor; according to the Lagrangian equation, the expanded mathematical model of the measurement system is established, and the acceleration sensor and angle sensor are used to collect the acceleration data and angle data of the driving part of the pyrodynamic actuator, and the polynomial method is used , cleaning acceleration jump data caused by factors such as collisions, and finally inverting the output load of the pyrotechnic actuator to obtain the output load value of the pyrotechnic actuator.

[0122] The specific steps are:

[0123] Step 1. Establish a test system, put the fuel into the pyrotechnic actuator, and place the ...

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Abstract

The invention provides an explosive load identification method and system for a pyrotechnic actuator, and the method comprises the steps: step 1, constructing a measurement system for identifying a load generated by the combustion of ballistic combustion powder in a pyrotechnic actuator, the measurement system comprising- an inner wing, an outer wing, the pyrotechnic actuator, an acceleration sensor and an angle sensor; step 2, performing data cleaning on the collected acceleration data and angular velocity data through polynomial fitting; and step 3, according to a Lagrange equation, establishing a mathematical model of a measurement system, and according to the acceleration data and the angular velocity data of the outer wing surface, calculating to obtain an output load of the pyrotechnic actuator. By measuring the acceleration signal and the angular velocity signal, the change of the output load of the pyrotechnic actuator after the external boundary condition is changed can be identified very conveniently, and data support is provided for improving the launching reliability of a weapon system.

Description

technical field [0001] The present invention relates to the technical field of load identification, in particular to a method and system for identifying explosive loads of pyrotechnic actuators. Background technique [0002] More and more new technologies such as aircraft separation and deformation use pyrotechnic actuators as output power sources. Existing calculation and test methods are difficult to accurately describe or measure the output load generated by the combustion of pyrotechnic actuator products, and the output load of pyrotechnic actuators is often strongly coupled with the external structure. [0003] The output load of the pyrotechnic actuator generally adopts the closed explosion test to measure the relationship between the output pressure and time of the pyrotechnic actuator. However, the dense explosion test cannot accurately describe the influence of the external structure on the combustion of the pyrotechnic actuator. However, the external structure ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20
CPCG06F30/15G06F30/20
Inventor 许泉史晓鸣侯凯宇夏鹏高阳毛黎明李海东刘陆广刘广许斌许自然
Owner SHANGHAI INST OF ELECTROMECHANICAL ENG
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