• 산업공학
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• 제15권4호
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• pp.432-438
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• 2002

When the trailing edge and leading edge of an airfoil contour of high pressure compressor blades are measured, there exists a measurement error due to the size of the probe stylus ball diameter. In the paper an experimental study is provided to determine the optimum diameter of the probe stylus in inspecting the airfoil of the high pressure compressor blade. The measurement and analysis procedure suggested in this paper will be helpful to those who are involved in measuring and inspecting various types of blades.

• 한국생산제조학회지
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• 제8권1호
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• pp.126-134
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• 1999

In this paper, a new error compensating technique for form-error compensation of rough-surface profile obtained by contact stylus profilometer is proposed. By the method, the real contact points of rough-surface and diamond stylus can be estimated and the measured profile data corrected. To verify the compensation effect, the properties(Ra, RMS, Kurtosis, Skewness) of measured profile data and compensated data were compared. And, the cumulative RMS slope was proposed to assess the compensated effect of upper area of profile. The results show that the measuring error could be compensated very well in amplitude parameters and in proposed cumulative RMS slope by the developed form-error compensating technique.

• 한국정밀공학회지
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• 제19권3호
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• pp.107-113
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• 2002

This paper presents a straightness measurement system for flat and long workpieces. The measurement system consists of a laser, a CCD camera and processing system, a carrier system with a stylus, and some optical units. The carrier system accompanies the stylus, which displaces and retroreflector along the surface profile. The optical unit is used to optically amplify displacement of the stylus unit. The developed system is applied to a ground surface and a LM guide unit. The experimental results show that the developed system can measure the straightness of flat surface and moving systems.

• 한국정밀공학회지
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• 제20권8호
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• pp.101-107
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• 2003

A new mechanical probe for 3-D feature measurement on coordinate measuring machines (CMMs) is presented. The probe is composed of the contact stylus and the three-component force sensor. With the stylus mounted on the force sensor, the probe can not only measure 3-D features, but also detect contact force acting on the stylus tip. Furthermore, the probing direction and the actual contact position can be determined by the relationship among three components of contact force to be detected. In this paper, transformation matrix representing the relationship between the external force acting on the stylus tip and the output voltages of measurement gauges is derived and calibrated. The prototype of probe is developed and its availability is investigated through the experimental setup for calibration test of the probe. A series of experimental results show that the proposed probe can be an effective means of improving the accuracy of touch probing on CMM.

• 한국전기전자재료학회논문지
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• 제37권5호
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• pp.465-475
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• 2024

Due to changes in the form factor of display panels and touch screen panels in various devices, capacitive touch systems have evolved to address various issues such as low power consumption, noise immunity, and small chip size. Furthermore, some devices have applications that use a stylus. Since the stylus operates similarly to a finger touch, it encounters similar issues. Recent research trends focus on addressing key issues such as noise, which is primarily caused by the self-capacitor formed between the display cathode and the touch screen panel. In this paper, Various research papers discussing methods to eliminate external noise will be reviewed. These advancements enhance noise immunity in touch systems, making it easier to use thinner and more flexible panels. These progress make touch technology more versatile and reliable in various applications.

• Journal of the Korean Wood Science and Technology
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• 제8권1호
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• pp.22-27
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• 1980

Talysurf에 의한 톱니마모정도의 수량화가 수행되었다. (1)톱니의 단면은 아래식을 만족시키는 조건에서 Taysurf의 그래프로서 얻어진다. ${\frac{{\Delta}h}{h}}={\frac{V{\Delta}_x}{V_x}}$ {${\Delta}h$: stylus의 수직이동거리 h: 챠트에 있어서 수직거리 $V{\Delta}_x$: stylus의 이동속도 $V_x$: 챠트의 이동속도} (2) stylus의 오차는 아래식에 의하여 계산된다. i) 13.8${\mu}{\leqq}$x<20.4${\mu}$ y=-0.2246x+4.59${\mu}$ ii) 0${\leqq}$x<13.8${\mu}$ y=${\sqrt{(-18{\mu})^2-x^2}}-1.42x+32.7{\mu}}$ (3) 톱니단면과 stylus의 오차는 아래식에 의하여 계산된다. $E(%)=\frac{f(r){\times}{\frac{4}{18{\mu}}}}{f(R){\times}{\frac{R}{18.5{\mu}}}-f(r){\times}{\frac{r}{18{\mu}}}}{\times}100$ {E(%) : stylus의 오차/톱니의 둔함 r: stylus의 반경 R: 챠트에서 얻어지는 그라프의 반경 f(r): stylus의 오차 f(R): 챠트에서 얻어지는 그라프의 둔함} (4) 최대오차와 톱니단면의 관계에서 쌍곡선그라프를 얻을 수 있다.

• 한국정밀공학회지
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• 제29권8호
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• pp.845-852
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• 2012

The diaphragm-type stylus probe was developed for ultra-precision on-machine measurement (OMM) application. This probe is equipped with two diaphragms which are parallel and one capacitive sensor is used for detecting the vertical motion of end tip in the stylus when it is contacted to the optical freeform surface. For better performance of proposed probes, several design parameters such as axial stiffness and the lateral deformations were investigated with finite element analysis techniques. To verify the feasibility, the profiles of the master sphere ball were measured on the ultra-precision milling machine. The measurement results show that the proposed probe can calculate the radius of the circle within the accuracy of 0.1 ${\mu}m$ for the ultraprecision optical surface.

• Journal of Korean Vacuum Science & Technology
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• 제5권1호
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• pp.1-6
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• 2001

We measured the simultaneous, time-resolved spectra of photon emission, electron emission, and frictional force during the abrasion single crystal MgO with a diamond stylus in vacuum. phE and EE signal can be detected with millisecond resolution during the wear of a single crystal MgO substrate with a diamond stylus. The emissions and wear behavior are strong function of surface condition, load and stylus velocity. Measurement on annealed vs as-received material show that the luminescence is primarily due to deformation, and the electron emission is primarily due to fracture. These emissions provide insight into the processes responsible for catastrophic failure of ceramics in wear applications.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2007년도 학술대회 1부
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• pp.25-31
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• 2007

본 논문에서는 질감제시장치와 진동모터를 내장한 펜형 햅틱(haptic) 인터페이스에 대해서 기술한다. 본 연구의 목적은 다양한 장치에 적용할 수 있는 소형 질감제시 모듈을 제안하고, 개발된 모듈을 펜과 같은 모양의 인터페이스에 내장하여 그 성능을 검증하는데 있다. 본 연구의 수행을 위해 핀배열을 내장하고 있으며, 저전력, 저소음으로 동작하며, 수직방향으로 1mm이상의 변위를 일으키는 소형 질감제시 모듈을 개발하였다. 그리고 개발된 모듈은 PDA나 Tablet PC등에서 흔히 사용되는 스타일러스(Stylus)와 같은 펜모양의 인터페이스에 내장되었다. 펜형 인터페이스의 헤드부분에는 팬케익 모터를 내장하여 사용자에게 진동 촉감을 제공할 수 있도록 하였다. 개발된 펜형 인터페이스의 성능을 검증하기 위하여Mobile Tablet PC상에서 내장된 질감제시 모듈이 점자정보를 촉감으로 전달할 수 있는지에 관한 실험을 수행하였으며, 모든 실험은 그래픽 사용자 인터페이스(GUI)상에서 이루어졌다. 또한 모든 버튼 조작시 '클릭'하는 느낌을 재현하였다. 실험은 동시에 다양한 자극의 주파수와 시간의 변화 조건에서 시행되어 의도하는 촉감을 가장 잘 전달하는 자극방법에 관한 연구를 동시에 수행하였다. 또한 개발된 펜형 인터페이스를 이용하여 이미지와 함께 데이터 베이스화 되어있는 질감을 재현할 수 있는 방법에 관한 기초 연구를 수행하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.1099-1100
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• 2008

In this paper, we would like to introduce a simple and low cost wired pointing device by using a electromagnetic induction. A number of patents of Wacom describe electronic drawing devices or styluses. The movement of the stylus over a tablet is traced electronically and used applied to a resonant circuit in the stylus. Electromagnetic radiation emitted by the resonant circuit is detected by a sensing mechanism and location processing is used to locate the stylus. In this research, difference coil principle is used to detect the emitted radiation of the resonant circuit in the pen. This detection device shows good performance to detect the location of the pen on the tablet.