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Vertical state and structurally simple modal test system

A test system and simple mold technology, which is applied in the testing of machine/structural components, vibration testing, measuring devices, etc., can solve the problems that the installation form of the measuring system cannot meet the requirements of environmental adaptability, the temperature range is large, and the time span is long. , to achieve the effect of improving reliability and safety, reducing the difficulty of maintenance and quick start

Inactive Publication Date: 2017-03-15
BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +2
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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to solve the problem that the existing measurement system installation form cannot meet the environmental adaptability requirements due to the long time span of the test state of the dynamic characteristics of the erected state structure, the test environment, high humidity, large temperature range, and complexity. question

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  • Vertical state and structurally simple modal test system
  • Vertical state and structurally simple modal test system
  • Vertical state and structurally simple modal test system

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically conn...

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Abstract

The invention relates to the missile and launch vehicle dynamic characteristic measurement technology, and particularly relates to a vertical state and structurally simple modal test system. The system comprises a measurement device, a pulse excitation device and a temporary measurement chamber. The measurement device comprises a capacitive acceleration sensor, a sensor base and a sensor cable. The capacitive acceleration sensor is mounted on the sensor base. The sensor base is connected with the surface of a test piece. A waterproof protective film is respectively coated on the capacitive acceleration sensor and the sensor base. One end of the sensor cable is connected with capacitive acceleration sensor, and the connection part of the sensor cable and the capacitive acceleration sensor is coated by the above waterproof protective film to be sealed by a heat-shrinkable tube. The other end of the sensor cable is provided with a signal line connector and a power line connector. The signal line connector is connected with the measurement system of the temporary measurement chamber. The power line connector is connected with the power supply device of the temporary measurement chamber. The pulse excitation device is arranged along the main vibration direction of the test piece. According to the technical scheme of the invention, the system is strong in environment adaptability and can be applied to the field operation of large ambient temperature and humidity change range.

Description

technical field [0001] The invention relates to the technical field of dynamic characteristic measurement of missiles and launch vehicles, in particular to a simple modal test system for erected state structures. Background technique [0002] At present, the structural dynamic characteristic test is a routine and important link in the product development process. The general purpose of the test is to assess the dynamic characteristic parameters of the structure in the real state of the product. The frequency, mode shape and damping parameters of the product in the test state are used as a reference for the design of the ground network of the product general inspection control system; the frequency, mode shape and damping parameters of the product in the state of the launch area are used for checking the vertical load calculation, the calculation of the initial Q value of take-off, and Ground aiming design for use. [0003] With the development of domestic related test techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/06
CPCG01M7/06
Inventor 张永亮付肇庆王鹏辉苏里李宝海左祥昌
Owner BEIJING INST OF STRUCTURE & ENVIRONMENT ENG
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