Axis Alignment Detection And Adjustment System Based On Micro Lens Array

The driving shaft and the driven shaft are connected and installed through coupling and other forms to transfer power,which is called coupling of transmission shaft.The coaxial between transmission shafts is usually called alignment.In the installation and maintenance of rotating equipment,it is very important to detect the coupling deviation of the interconnecting shafts,that is,whether the spatial position and angle of the center point coincide or not.Improving the alignment accuracy of the coupling shaft is an extremely important technical index to ensure the normal operation of the equipment,reduce sudden failures and prolong its service life.It is also an effective way to reduce power consumption.The shaft alignment detection and adjustment technology has great application value in industry and has become a research hotspot in recent years.The existing methods for measuring the alignment of transmission shaft have some shortcomings,such as low intellectualization of equipment,high requirements for the technical level of operators and bottlenecks in the improvement of accuracy.In this paper,a detection method based on the combination of image system and digital image processing technology of micro lens array is proposed,which can realize high precision and intelligent measurement of axis alignment deviation.The system also establishes the mathematical relationship between the two-axis deviation and the motor adjustment parameters by using the relationship between the shaft coupling deviation data and the motor installation position parameters.It can give the adjustments of the motor foot height and placement angle in the installation and adjustment,and realize the integration of detection and adjustment.Firstly,based on the analysis and induction of the existing axis connection accuracy detection technology,combined with the existing optical processing technology and image sensing technology,a detection scheme based on micro-lens array optical devices is proposed.The facula matrix is obtained by using micro lens,and the facula parameters are obtained by using digital image processing technology,and calculate the position and angle of light incidence,and then the theoretical model of axial coupling deviation and facula parameters is established.On this basis,according to the actual requirements of the equipment application scenario,the shaft coupling deviation data are linked with the adjustment of the motor,and the theoretical calculation basis is obtained,which provides a mathematical model for the system software calculation.Secondly,according to the overall technical requirements of the system,the key components of the system,such as image receiving sensor,micro lens array,processing chip,are optimized or analyzed.Construct the experimental system,acquire the spot image,and apply the original image,and verify the validity of the filtering,edge detection and ellipse fitting techniques applied in this paper.The digital image processing program and the system calculation program are compiled to transplant the embedded program according to the requirement of miniaturization of the system,which provides the hardware and software basis for the engineering application of the system.Finally,according to the principle prototype developed in this paper,two sets of experimental systems,simulation test and physical test,are built.Simulated experiment system is used to complete uniaxial measurement and biaxial docking measurement respectively.In the experiment of physical experiment system,the principle prototype is used to test and compare with the percentile method.The experimental results show that the resolution of midline deviation is less than 5 ?m and the angular resolution is less than 0.1 mm/100 mm.