Research on Concentricity Detection System of Magnetic Circuit Based on Sub-pixel Technology
In order to meet the high requirements of measurement accuracy and repeatability for magnetic circuit concentricity,the com-mon-used sub-pixel edge detection technology has been studied.A concentricity detection system based on sub-pixel technol-ogy has been designed after taking the manufacturing environment and magnetic circuit actual features into consideration.The overall design of the detection system and detection algorithm have been given.Finally,the detection system is developed with OpenCV.The experimental results show that the repeatability precision is less than 0.01 mm,which is better than the high-accuracy projector in the laboratory.The system can realize the on-line inspection and meet the requirements of the con-centricity detection of the magnetic circuit.