Linear vibration and overload combinatorial testing method and apparatus thereof

Abstract

The invention provides a linear vibration and overload combinatorial testing method and an apparatus thereof. The apparatus is composed of a disc centrifuge and a high-speed rotation platform. The high-speed rotation platform is arranged on the disc centrifuge. The shaft of the disc centrifuge is parallel to the shaft of the high-speed rotation platform. The testing method comprises the steps that: an inertial instrument requiring testing is arranged on the rotation platform; testing signals are transmitted to a ground monitoring computer through a slide ring; the centrifuge and the high-speed rotation platform are powered up, and null positions are controlled; an input shaft of the inertial instrument is calibrated; a controlling program is started; rotation speeds of the centrifuge and the high-speed rotation platform are adjusted; and the performance of the inertial instrument is analyzed. With the apparatus and the method provided by the invention, technology realization difficulties caused by large weight and volume of a electromagnetic vibration shaker can be greatly reduced; and high-precision testing is realized while environmental test is achieved.

Description

(1) Technical field [0001] The invention relates to measurement technology, specifically a method and device for combined testing of linear vibration and overload. (2) Background technology [0002] The inertial navigation test device is the key equipment in the research of inertial instruments and inertial measurement systems. The comprehensive environmental simulation equipment mainly based on centrifuges is an early and fast-developing simulation equipment for the comprehensive environment and mechanical environment. In the 1990s, a composite environmental simulation test equipment with centrifuges as the main body was manufactured. A common practice for such equipment is to mount a device at one end of the centrifuge arm that simulates temperature, altitude, humidity, vibration, or other environmental conditions. The main purpose of the equipment is to simulate the complex environment that aircraft, missile warheads, satellites and spacecraft experience during the launc...

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Problems solved by technology

[0003] For a long time, there has always been a problem for component-level products: what is the difference between the impact of a single environment and a composite environment on the product?

The automatic test system established by Lu Shun in his paper "Development of Accelerometer Comprehensive Test System" (Shanghai Jiaotong University Master's Degree Thesis, 2007) is only suitable for the calibration test of the angular velocity meter, not the comprehensive test; Jia Puzhao in his paper " Steady-state acceleration simulation test equipment: centrifuge design" (see "Spacecraft Environmental Engineering", 2011, Volume 28, No. 2, Page 194-203) The centrifuge designed is only suitable for overload or linear acceleration tests; Li Chunzhi, Li Qisheng, and Niu Baoliang pointed out in their paper "Measurement and Analysis of Centrifuge Structural Vibration under the Combination of Centrifugation and Vibration" (see "Vibration and Shock", 2008, Supplement to Volume 27, Pages 265-267) that currently the vibration table is usually used to The system realizes the vibration-centrifuge composite test by placing the connecting base plate in the centrifuge basket, and no better test plan is given; Cui Shenggang wrote in his thesis "Research on Measurement and Control Problems of Linear Vibration Table" (Harbin Institute of Technology Master's Degree Thesis, 2009 ) analyzed the composition, mathematical model and control method of the wire vibration table, the device is only suitable for the test of wire vibration; Pneumatics, No. 6, 2003, pages 14-17), the hydraulic line vibration table researched in is also only suitable for the line vibration test, none of the above meets the requirements of the combined test

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