Iterative control method for bottle cap image acquisition

Abstract

The invention discloses an iterative control method for bottle cap image acquisition. The method comprises: step S1 of acquiring an image: when a bottle cap is moved to an infrared receiver, triggering the infrared receiver, and acquiring an image after an appropriate length of time is extended; step S2 of calculating a photographing offset, performing image processing on the obtained bottle cap image, and calculating the offset error of the photographing; step S3 of iteratively adjusting the control amount, and based on the offset error of the photographing, using an iterative control methodmake actual output of a system track an ideal expected output signal. According to the scheme, an image processing technology is utilized to automatically discriminate the offset error between a current photographing center and the bottle cap, the iterative control method is used to continuously change the input amount, so that the actual output of the system tracks the ideal expected output signal, the uncertainty interference generated when an image processing system positions the center of the bottle cap is overcome, and accurate photographing acquisition of the bottle cap image in high-speed motion is achieved.

Description

technical field [0001] The invention belongs to the technical field of control, and relates to an iterative control method for bottle cap image acquisition. Background technique [0002] Obtaining high-quality images of the inspected workpiece is a necessary condition for machine vision inspection. However, in the intelligent manufacturing of bottle cap filling, the bottle caps move at high speed on the production line, accompanied by mechanical vibration and random swing of the line, and the camera is installed on the boom. Factors such as mechanical stress deformation and sensing error of the sensor cause great interference to accurately capture high-quality bottle cap images. Only when the complete image of the bottle cap is obtained with high quality can the defects of the image of the bottle cap be effectively detected, that is, when the sensor detects the arrival of the workpiece, the control unit should eliminate many disturbances, accurately calculate the exact momen...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, especially to solve the existing high-speed bottle cap image acquisition method, which is affected by the mechanical vibration and random swing of the assembly line, as well as the mechanical stress deformation of the camera mounting arm and the induction error of the sensor. An issue that resulted in inaccurate bottle cap image acquisition

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