Verification method of vibration quantity value of electronic product

Abstract

The invention discloses a verification method of a vibration quantity value of an electronic product, and aims at providing a verification method capable of improving the vibration test measurement and control precision of the electronic product. The invention is realized by the following technical scheme: a tested electronic product test piece is fixed between the positioning strips on wide edgeson both sides of a rectangular rigid platform of a vibration clamp, rectangular grooves leaning against four opposite angles of the tested electronic product test piece are formed in each positioningstrip, an L-shaped angle plate leaning against the corners of the tested electronic product test piece is fixed in each rectangular groove, and vibration sensors are respectively mounted on each L-shaped angle plate to form a four-corner verification point; and a vibration average value measured by the vibration sensors mounted on the four verification points is taken as an excitation input valueof the test, the vibration quantity value of the tested electronic product test piece is verified by a vibrostand control device, the stress generated by the tested electronic product test piece is transmitted to each vibration sensor, and each vibration sensor sends a vibration test controlled quantity value to the vibrostand control device to display a verification value.

Description

technical field [0001] The invention relates to a method for verifying the vibration value of electronic products. Background technique [0002] With the continuous development of the technical level of electronic products and the continuous improvement of reliability requirements, the random vibration test has become one of the key test items for the identification or regular inspection of electronic products. The purpose of the vibration test is mainly to assess the vibration resistance of electronic products, so it is very important to accurately apply the vibration value in the vibration test. The key factor affecting the vibration test effect of electronic products is the vibration test fixture. The main function of the test fixture is to transfer the energy generated by the vibration table to the test piece. A good fixture should at least meet the following requirements: it can easily fix the test piece in the vibration In the entire test frequency range, the frequenc...

AI Technical Summary

Problems solved by technology

Under normal circumstances, electronic products are installed on the vibration test bench through the fixture connection, and the vibration sensor used for measurement or control is installed on the front, rear, left and right end faces or above the vibration fixture table, and the position of the vibration sensor is far from the installation position of the electronic product under test. It is far away, and the center of the vibration sensor is not placed on the joint surface of the vibration fixture and the electronic product under test, and the number of vibration sensors is 1 to 2. Due to the existence of position error, the electronic product under test will be damaged. There is a difference between the actual vibration value and the expected value, resulting in inaccurate vibration test values ​​of the tested electronic products, and prone to over-test or under-test phenomena

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