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Assembly quality detection system and method based on frequency-response function

A quality inspection method and frequency response function technology, which is applied to measuring devices, instruments, and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve problems such as visual occlusion and poor light in the working environment, and save manpower, reduce workload, Solve the effect of visual occlusion

Inactive Publication Date: 2019-03-08
SHANDONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above problems, the present invention proposes an assembly quality inspection system and method based on a frequency response function (FRF), which does not require a visual system, and effectively solves problems such as visual occlusion and poor light in the working environment

Method used

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Embodiment 1

[0059] An assembly quality detection system based on a frequency response function disclosed in one or more embodiments, such as figure 1 As shown, it includes: the impact excitation unit, the structure to be tested, the measurement unit, the analysis unit and the output display unit.

[0060] Among them, the impact excitation unit mainly generates vibration signals through hammers or vibration tables;

[0061] The structure to be tested is the mill liner, including rectangular and triangular models, as shown in Fig. The selection of points is based on the principle of reflecting the configuration of the structural member to be tested. The shock excitation unit generates shock excitation signals at each measuring point.

[0062] The measurement unit is mainly composed of a sensor and a conditioning circuit; the sensor is a three-axis acceleration sensor, which is set at each measuring point; the conditioning circuit includes a signal amplification circuit and an AD conversio...

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Abstract

The invention discloses an assembly quality detection system and method based on a frequency-response function. The system comprises an impact excitation unit, a measurement unit, an analysis unit andan output display unit, wherein at least one measuring point is arranged on a measured substrate, and the impact excitation unit produces a vibration signal in the position of each measuring point; the measurement unit comprises acceleration sensors, the acceleration sensors are arranged in the positions of all the measuring points in the surface, opposite to the acting surface of the impact excitation unit, of the substrate, acceleration signals are collected and transmitted to the analysis unit, and the analysis unit analyzes the collected data and judges whether assembly quality is qualified; the analysis unit transmits an analysis result to the output display unit for display. According to the scheme, a visual system is not needed when the assembly quality of the substrate is detected, and the problems of visual shading, poor light and the like of an operating environment are effectively solved; detection and analysis are realized automatically, manpower is saved, and workload ofa worker is reduced.

Description

technical field [0001] The invention relates to the technical field of assembly quality detection of the inner liner of a ball mill barrel, in particular to an assembly quality detection system and method based on a frequency response function. Background technique [0002] Various liners are installed inside the barrel of the ball mill to protect the mill. After a period of use, different degrees of wear will occur and need to be replaced irregularly. The assembly quality of the replaced liner affects the service life of the liner. During the assembly process of the mill liner, due to the assembly force or other uncertain factors, the assembly quality will be unstable. Most of the current assembly quality detection methods are based on machine vision methods, but in the case of visual occlusion, the assembly quality cannot be judged well. Contents of the invention [0003] In order to solve the above problems, the present invention proposes an assembly quality inspectio...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/07G01N29/12
CPCG01N29/045G01N29/07G01N29/12G01N2291/011G01N2291/014G01N2291/023
Inventor 蒋奇李凤鸣宋锐李贻斌
Owner SHANDONG UNIV
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