• Journal of Advanced Marine Engineering and Technology
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• 제33권5호
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• pp.713-720
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• 2009

Numerous applications of position controlling devices using servoing technique and transmission of energy through belt drives are practiced in the industry. Belt drive is a simple, lightweight, low cost power transmission system. Belt drives provide freedom to position the motor relative to the load and this phenomenon enables reduction of the robot arm inertia. It also facilitates quick response when employed in robotics. In this paper, precision positioning of a belt driven mechanism using a feed-forward compensator under maximum acceleration and velocity constraints is proposed. The proposed method plans the desired trajectory and modifies it to compensate delay dynamics and vibration. Being an offline method, the proposed method could be easily and effectively adopted to the existing systems without any modification of the hardware setup. The effectiveness of the proposed method is demonstrated through computer simulation and experimental results.

• International Journal of Control, Automation, and Systems
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• 제1권4호
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• pp.474-483
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• 2003

Belt drives provide freedom to position the motor relative to the load and this phenomenon enables reduction of the robot arm inertia. It also facilitates quick response when employed in robotics. Unfortunately, the flexible dynamics deteriorates the positioning accuracy. Therefore, there exists a trade-off between the simplicity of the control strategy to reject time varying disturbance caused by flexibility of the belt and precision in performance. Resonance of the system further leads to vibrations and poor accuracy in positioning. In this paper, accurate positioning of a belt driven mechanism using a feed-forward compensator under maximum acceleration and velocity constraints is proposed. The proposed method plans the desired trajectory and modifies it to compensate delay dynamics and vibration. Being an offline method, the proposed method could be easily and effectively adopted to the existing systems without any modification of the hardware setup. The effectiveness of the proposed method was proven by experiments carried out with an actual belt driven system. The accuracy of the simulation study based on numerical methods was also verified with the analytical solutions derived.

• 대한기계학회논문집
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• 제12권3호
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• pp.457-465
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• 1988

본 연구에서는 벨트 연삭시 즉 집중하중을 받는 평벨트 구동에서 벨트와 풀리 사이의 내접촉 특성을 구하고자 하였다.준 정적평형(quasi-static equilibrium) 상 태에서 벨트구동계의 이론적 해석을 하여 집중하중점을 포함한 벨트-풀리 전접촉구간 에서 벨트장력분포를 구하고 이 결과를 실험치와 비교하였다. 본 연구에서는 집중하 중점 보다는, 집중하중의 벨트-풀리 전접촉구간에 대한 영향을 밝히는데 주안점을 두 었다.

• 대한전기학회논문지:전력기술부문A
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• 제48권9호
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• pp.1126-1130
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• 1999

This paper persents an algorithm compensating for the change of tension acting on a belt which is used as a force transfer media of the induction motor that drives a washing machine. The induction motor adopted in a washing machine is operated not only for the power-transmission device, but also for the detection of clothes load. The load of clothes is determined by the duration of inertial rotation which is occurred by the induction motor during a specific time. The tension of belt also affects the determination of clothes load as another load and this change of the tension is a significant disturbance for accurate determination. This paper mentions the algorithm compensating for the amount of change in tension and the application of the algotithm proved to be effectively increasing the washing performance and reducing the noise and the vibration.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2010년도 하계학술대회 논문집
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• pp.115-116
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• 2010

본 논문에서는 PMSM(Permanent Magnet Synchronous Motor)을 이용한 재봉틀 구동시스템을 개발하였다. 전차원 관측기를 이용하여 속도를 추정하고, 벨트(Belt)에 의한 외란 토크를 추정하여 보상하였다. 개발된 재봉틀 구동시스템을 실제 재봉틀에 장착하여 그 효용성을 검증하였다.

• Journal of Power Electronics
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• 제9권6호
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• pp.960-968
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• 2009

This paper presents a design optimization process for interior permanent magnet synchronous motors (IPMSM) for hybrid electric compressors (HEC) which are applied to hybrid electrical vehicles. A hybrid electric compressor is composed of an electric motor driving section and an engine driving section which is connected to the engine by a pulley belt. A hybrid electric compressor driving motor requires half of the full driving power of a compressor. Even though an engine is not operated at the idling stop mode, the electric motor drives the air-conditioner compressor by itself so that the air conditioning system can produce its minimum cooling capacity. In this paper, the design optimization of an IPMSM for a 42 (V) applied voltage system is studied using the design of experiment (DOE) and response surface method (RSM) of 6sigma. The driving characteristics of this motor drive system are measured and analyzed by experiment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 B
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• pp.584-587
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• 1992

Because linear motor directly drives linear motion, it does not need conversion equipment such as belt and gear. Especially linear pulse motor provide more precise positioning and large force of linear pulse motors. As current manufacture technic of linear pulse motor is much to be desired at home. This motor lay out to make use of computer aided design program, In this paper the experimental motor is 2-phases 4-poles hybrid pulse motor which has teeth per pole Simulation program is divided its function into 4 parts - air gap permeance analysis, permanent magnet & non-linear core operating point determine, winding configuration, leakage flux analysis. It is possible to make motor static and magnetic characteristics for this simulation program. Also, by varying input parameters of the program, experimental motor is to be compared to motor characteristics.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 하계학술대회 논문집
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• pp.47-50
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• 1991

LPM(Linear Pulse Motor) provide direct and precise position control of bidirectional linear motion. LPM is not subject to the same linear velocity and acceleration limitations inherent in systems converting rotary to linear motion such as lead screws, rack and pinion, belt and pulley drives. With LPM, all the thrust force generated by the motor is efficiently applied directly to the load. And speed, distance, and acceleration are easily programmed in a highly repeatable fashion. Potential industrial and application fields of LPM include PCB assembly, industrial sewing machines, automatic inspection, coil winder, medical uses, conveyer system, laser cut and trim systems, semiconductor wafer processing, OA instruments etc. This paper describes various design parameter of LPM such as magnetic ciucuit construction methods, phase number and tooth number per pole, permanent magnet and coil mmf, tooth geometries. And to solve the problems of existing control methods, in this paper, a new control method of the LPM is proposed throughout modern control theory.

• 한국지구과학회지
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• 제34권2호
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• pp.136-147
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• 2013

이 연구는 6월 남극진동이 한국 6월 강우량에 영향을 주는지 알아보기 위해 두 변수 사이에 상관분석이 이루어졌고 높은 양의 상관관계가 있음이 밝혀졌다. 이는 한국 6월 강우량이 같은 시기에 남반구에서 강화되는 머스커렌 고기압과 호주 고기압의 영향을 받음을 의미하는 것이다. 이 두 고기압이 발달할 때 호주 주위지역으로부터 적도방향으로 적도 횡단류가 강화되며, 이 적도 횡단류의 강화는 북태평양고기압의 북쪽으로의 강화로 이어진다. 이는 결국 장마전선을 한국으로 북상시키는 역할을 한다. 더욱이 북태평양 고기압의 북쪽으로의 강화는 한국에 상륙하거나 영향을 주는 태풍의 빈도를 증가시켜 6월 강우량의 증가에 중요한 역할을 한다.

• 한국지역지리학회지
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• 제11권3호
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• pp.410-423
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• 2005

본 연구의 목적은 우리나라 남해안 지역의 관광개발 잠재력을 고찰하고, 이를 바탕으로 효율적인 관광개발의 전략을 제시하는 것이다. 한국의 남해안은 온화한 기후조건, 수려한 해상경관, 독특한 도서문화 등을 보유하여 다양한 관광활동에 최적의 여건을 제공하고 있고, 한중일을 연결하는 해상관광항로의 결절적 위치성도 가지고 있다. 그럼에도 불구하고 남해안은 내륙의 국립공원과 제주도 및 강원도 중심의 관광개발정책 등에 의해 효율적인 관광개발이 추진되지 못했다. 그러나 동북아 정제권에서 관광수요의 증가, 해양관광 선호하는 관광객의 급증, 남해안지역에 대한 접근성 개선, 수도권의 대안축으로 남해안에 대한 관심 증대 등으로 최근에는 남해안의 개발이 새롭게 주목을 받고 있다. 그러므로 남해안의 효율적인 관광개발을 위해서는 연안지역 개발을 규제하는 각종 제도의 완화, 남해안 관광을 위한 특별법의 제정, 동북아 해상관광루의 설정, 남해안 연안여객항로의 개설, 2012년 여수 세계박람회의 유치 등의 정책과제가 장단기적으로 시행되어야 할 것이다.