http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개별검색 DB통합검색이 안되는 DB는 DB아이콘을 클릭하여 이용하실 수 있습니다.
통계정보 및 조사
예술 / 패션
<해외전자자료 이용권한 안내>
- 이용 대상 : RISS의 모든 해외전자자료는 교수, 강사, 대학(원)생, 연구원, 대학직원에 한하여(로그인 필수) 이용 가능
- 구독대학 소속 이용자: RISS 해외전자자료 통합검색 및 등록된 대학IP 대역 내에서 24시간 무료 이용
- 미구독대학 소속 이용자: RISS 해외전자자료 통합검색을 통한 오후 4시~익일 오전 9시 무료 이용
※ 단, EBSCO ASC/BSC(오후 5시~익일 오전 9시 무료 이용)
Recently, as the infocomindustry is developed, the semiconductor industry as well as the optical industry such as the optical communication and the optical instrument is developed rapidly. The transmission, storage and processing of information have been reaching an limit because amounts of information increase sharply. demands of optical components are growing due to demands of faster network. The transport and inspection process are time consuming and the error rate is high, because this process is not automated in case of an optical lens. In this paper, the pick-up system which can grasp optical elements transferred by the ultrasonic transport system and move them to other transport system is developed. The inspection system which distinguishes between the existence and the nonexistence of a defect is connected easily to pick-up system. The pick-up system separates the optical glass lens by results of the inspection. The automation program is developed by visual c++ programming.
The slide rail is the latest device driven by rectilinear reciprocating motion. It is used for the great deal of fields with the progress of high technology in these days: for example, telecommunication device, measurement device, copy machine, refrigerator, car, office furniture and wood furniture, ect.. But it is very difficult to produce the press mold that has a forming of narrow thickness, straight quality and high accuracy. Recently Roll forming technique is used to fabricate the slide rail. To evaluate the characteristics of each path shape is not easy because the roll forming passes the sheet metal in the continuously arranged multistage roll stands. In this paper, Roll forming simulation is performed to make U-channel using SHARP-RF. Longitudinal strain and total effective strain are evaluated. In addition, Springback is measured about each bending part of upper.
Actuator of the robot is an important technology. One of the possible actuator is to drive by shape memory alloy. Shape memory has the excellent corrosion and the heat resistance. But, there is bad performance of repeatibility and the control scheme of SMA is difficult. In this paper, the thermal control of segmented SMA wire for 3-finger robot actuator is studied. The SMA wire using as thermo-electric module is segmented. The thermo-electric characteristics according to input voltage is measured. The MOSFET circuit is used to supply constant currents for the TEM. The force and displacement are measured according to the number of segment. LabView is used to control of segmented SMA wire. Hysteresis for one segmented SMA Wire is measured.
Actuator of the robot is an important technology. One of the possible actuator is to drive by shape memory alloy. Shape memory alloy has the excellent corrosion and the heat resistance. But, there is bad performance of repeatibility and the control scheme of SMA is difficult. In this paper, the control of SMA wire using digital control method is studied. The SMA wire is segmented by thermoelectric module(TEM). The temperature control program of segmented SMA wire is developed by using LabVIEW. Temperature control module measures the temperature of TEMs through thermocouple. Relay control module turns on or off the relay by comparing the measured temperature with the threshold temperature. To evaluate the performance of SMA wire using digital control method, the reaction time and the displacement are measured in each segment.
The research and development of an actuator are accelerating in the robotics industry. The EAP(electro-active polymer) and SMA actuator are designed simply and produce a lot of forces per unit volume. Their motions are similar to human's motion. But the repeatability of the electro-active polymer actuator is lower. The reaction velocity of the SMA actuator is slow and the travel is short. In this paper, the dynamic characteristics of the digital step motor(DSM) using SMA is studied. The SMA wire is divided by using the TEM(Thermo-electric module) to control each of segments independently. The MOSFET circuit is used to supply constant currents for the TEM. The hysteresis and displacement of the SMA wire according to load are measured.
The technique of the human being created the robot. Recently, intelligent robot is developed to improve human being life. Intelligent robot is an all aggregate of human technology. The intelligent robot is possible to be aware of surroundings and react quickly using AI. Actuator of the robot is an important technology. One of the possible actuator is to drive by shape memory alloy. Shape memory alloy has excellent corrosion and heat resistance. It is used to a lot of mechanical field. But, there are bad performance of repeatibility and control scheme of SMA is difficult. In this paper, performance of shape memory alloy wire using segment control is evaluated. The wire using as thermo-electric module is segmented. The mosfet circuit is used for composing the control system. The force and displacement are measured according to the number of segment. Hysteresis characteristics of the relationship of temperature between displacement are confirmed.
In the semiconductor and the optical industry, a new transport system which can replace the conventional sliding systems is required. The sliding systems are driven by the magnetic field and conveyer belts. The magnetic field may damage semiconductor and the contact force may scratch the optical lens. The ultrasonic wave driven system can solve these problems. In this paper, an object transport system using the excitation of ultrasonic wave is proposed. The experiments for finding the optimal progressive frequency and the phase-differences between two ultrasonic wave generators are performed. The relationships between transportation speed and the excitation frequency, flexural beam shapes and amplification voltage are investigated.
When the laundry rotates in the washing machine, it tends to lean toward one side. This tendency causes a serious vibration. The balance of washing machine plays an important role which reduces the vibration by injecting the sand or the salt water into the balance of washing machine. The hot plate welder is used to prevent from outflow of contents. The hot plate welder brings about many problems which is concerned with accident. The workers are protected by loading/unloading system for balance of washing machine in hot plate welder. This system is required direction recognition and location information in the balance. In this paper, development of machine vision system for recognition direction of balance in washing machine is studied. Pattern recognition techniques are used to extract an geometric characteristics from the balance of washing machine and to acquire the most similar form the next image of balance. The data acquired by the pattern matching is used for recognition direction of balance. The image processing software for the system is developed using LabVIEW.