http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Moon Chanwoo,Lee Sungho,Chung J.K Korean Society for Precision Engineering 2005 International Journal of Precision Engineering and Vol.6 No.2
The precision stage is an essential device for optic fiber assembly systems, micro machines and semiconductor equipments. A new piezoelectric inchworm type actuator is proposed to implement an actuator-integrated long-stroke linear stage. An in-and-quadrature phase (I/Q) heterodyne interferometer is developed as a feedback sensor of a servo system, and a synchronized counting method is proposed. The proposed measurement system can measure the accurate position of fast moving object with robustness to external sensing noise from actuator vibration. The developed servo stage will be applied to optic fiber device assembly system.
Chanwoo Moon,Sungho Lee,J.K. Chung 한국정밀공학회 2005 International Journal of Precision Engineering and Vol.6 No.2
The precision stage is an essential device for optic fiber assembly systems, micro machines and semiconductor equipments. A new piezoelectric inchworm type actuator is proposed to implement an actuator-integrated long-stroke linear stage. An in-and-quadrature phase (I/Q) heterodyne interferometer is developed as a feedback sensor of a servo system, and a synchronized counting method is proposed. The proposed measurement system can measure the accurate position of fast moving object with robustness to external sensing noise from actuator vibration. The developed servo stage will be applied to optic fiber device assembly system.
Chanwoo Moon,이성호,J.K. Chung 한국정밀공학회 2005 International Journal of Precision Engineering and Vol.6 No.2
The precision stage is an essential device for optic fiber assembly systems, micro machines and semiconductor equipments. A new piezoelectric inchworm type actuator is proposed to implement an actuator-integrated long-stroke linear stage. An in-and-quadrature phase (I/Q) heterodyne interferometer is developed as a feedback sensor of a servo system, and a synchronized counting method is proposed. The proposed measurement system can measure the accurate position of fast moving object with robustness to external sensing noise from actuator vibration. The developed servo stage will be applied to optic fiber device assembly system.
A New Robotic 3D Inspection System of Automotive Screw Hole
Moon-Hong Baeg,Seung-Ho Baeg,Chanwoo Moon,Gu-Min Jeong,Hyun-Sik Ahn,Do-Hyun Kim 대한전기학회 2008 International Journal of Control, Automation, and Vol.6 No.5
This paper presents a new non-contact 3D robotic inspection system to measure the precise positions of screw and punch holes on a car body frame. The newly developed sensor consists of a CCD camera, two laser line generators and LED light. This lightweight sensor can be mounted on an industrial robot hand. An inspection algorithm and system that work with this sensor is presented. In performance evaluation tests, the measurement accuracy of this inspection system was about 200 ㎛, which is a sufficient accuracy in the automotive industry.
문찬우(Chanwoo Moon),이영대(Youngdae Lee) Korean Society for Precision Engineering 2022 한국정밀공학회지 Vol.39 No.5
A linear motor is an actuator that has strong thrust and high controllability, and can perform linear motion without the use of a motion converter. In this study, we propose a new method to measure the position of the mover of a permanent magnet linear synchronous motor by measuring the magnetic flux density. To resolve the problem that existing methods have to spatially arrange multiple sensors, the proposed method uses a two-dimensional magnetic flux density measurement value at one point. In accordance with this, the estimation method was modified, the convergence condition of the estimation method was obtained, and the time required for the calculation was estimated. The validity of the proposed method was verified through comparative experiments with existing methods. As a result of the test, the proposed method had a small maximum absolute error compared to the existing methods, and was robust against sensor gain changes.
Moon, Changjong,Ahn, Meejung,Jeong, Chanwoo,Kim, Heechul,Shin, Taekyun Informa Healthcare 2011 Immunological investigations Vol.40 No.2
<P>To investigate whether netrin-1 is involved in autoimmune injury of the central nervous system, the expression of netrin-1 protein was analyzed in the spinal cord of Lewis rats with experimental autoimmune encephalomyelitis (EAE). Western blot analysis revealed significantly increased content of netrin-1 in the spinal cords of rats at the peak stage of EAE, as compared with the levels in normal control animals (p < 0.01). Immunohistochemistry detected the netrin-1 protein in neurons, oligodendrocytes, astrocytes and vascular endothelial cells in the spinal cords of normal controls. In EAE-affected spinal cords, netrin-1 immunoreactivity was detected in infiltrating inflammatory cells at the peak stage as well as in neurons, oligodendrocytes and astrocytes. These results suggest that netrin-1 is transiently increased in rat EAE lesions, where it contributes to the modulation of rat acute EAE.</P>