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와전류 센서를 이용한 비접촉식 진원도 측정에 관한 연구
배종일(Jong-Il Bae),양욱(Wook Yang),심창수(Chang-Soo Sim),배민성(Min-Sung Bae) 대한전기학회 2019 전기학회논문지 Vol.68 No.3
A sensor for constructing an In-line roundness measuring device has a tough characteristic on a foreign matter existing on the surface during grinding processing, selects a non-contact eddy current sensor which is excellent in durability and does not cause surface scratches The objective was set to constitute a device capable of performing In - Line roundness measurement and to make it possible to measure by applying the theory of circularity of three points method. In this study, when three displacement sensor signals of the input values of the 3 point circularity algorithm are composed only of the sample shape and the vibration signal by simulation in consideration of the characteristics of the non-contact eddy current sensor, three displacement sensors Using the output of 3 point method to know the roundness was able to confirm the roundness shape of the input sample analogized to a certain value by the vibration protest canceling by the prism. Also, from the output of the displacement sensor, it can be considered that if the system noise is not included, the shape of the input sample can be completely estimated.
배종일(Jong-Il Bae),배민성(Min-Sung Bae) 대한전기학회 2017 전기학회논문지 Vol.66 No.2
This paper presents an in-process measurement system for shaft radius measurement during grinding process. This system does not require to stop the grinding process, which can enhance productivity and quality. In order to measure the radius, the system employs an eddy current sensor that can measure without any contact with the shaft. This type of sensor is very appropriate because it is insensitive to interference such as cutting fluid, coolant, contact pressure, and wear. For data analysis, the measurement system is modeled as a linearized discrete form where the states with noise are estimated by an extended Kalman filter. This system has been validated through simulations and experiments.