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[논문] 자율주행 차량을 위한 다중 센서 융합기반의 환경인식
Unmanned driving of an autonomous vehicle requires high reliability and excellent recognition performance of the road environment and driving situation. Since a single sensor cannot recognize various driving conditions precisely, a recognition system using only a single sensor is not suitable for autonomous driving due to the uncertain...
[태그] sensor fusion autonomous driving|environment recognition unmanned vehicle|자율주행 차
[논문] 영구자석동기모터의 외란 관측기 기반의 비선형 속도 제어기
In this paper, we propose a disturbance observer (DOB) based nonlinear velocity controller for permanent magnet synchronous motors (PMSMs). The proposed method consists of DOBs and a velocity controller. The DOBs are developed to estimate the disturbances in velocity and current dynamics without the use of the derivative of the measure...
[태그] permanent-magnet synchronous motor|disturbance observer|velocity control|permanent-magnet synchronous motor disturbance observer|영구자석동기
[논문] 분산 PID 알고리즘을 이용한 입력 포화가 존재하는 다중 모터 시스템의 동기화
In this paper, we study the speed synchronization problem for a group of multiple motor systems by considering input saturations. To solve this problem, we propose the distributed PID algorithm based on the consensus technique. In addition, the integral controller may cause the integral windup effect due to input saturations. Therefore...
[태그] saturation consensus|synchronization distributed PID algorithn|분산 PID 알
[논문] 선택적 외란 제거를 위한 외란 관측기의 Q 필터 설계
In a disturbance observer (DOB), introduced disturbances are monitored by a plant inverse model and a Q filter compensates the improper inverse model and is designed to stabilize closed loop systems. Therefore, the filter bandwidth is usually trimmed to control the attenuation rate of the disturbance. However, the conventional DOB cann...
[태그] Q filter design disturbance|selective disturbance rejection disturbance observer|선택적 외란
[논문] 다양한 질소분압에서 펄스레이저법으로 성장된 AlN박막의 특성
Aluminum nitride (AlN) is used by the semiconductor industry, and is a compound that is required when manufacturing high thermal conductivity. The AlN films with c-axis orientation and thermal conductivity characteristic were deposited by using the Pulsed Laser Deposition (PLD). The AlN thin films were characterized by changing the dep...
[태그] Epitaxial PLD|Thin Films AlN|다양한 질소
[논문] ADC12 다이캐스팅 합금의 미세조직 및 기계적 특성에 미치는 개량 원소 첨가의 영향
In this study, various alloying elements (Cr, Sr, Ca, Cd) were added to improve the mechanical properties of ADC12 fabricated by a die casting process. The effect of alloying elements on the microstructure and mechanical properties were investigated. The phase analysis results of the modified ADC12 alloy with conventional ADC12 alloy, ...
[태그] ADC12 alloying element|Die casting Wear resistance|ADC12 다이캐
[논문] Ti-6Al-4V 합금의 표면 경화 시 경화기구 및 공정변수가 표면 경화에 미치는 영향
The effect of hardening methods and process parameters on surface hardening of a Ti-6Al-4V Alloy has been investigated in this study. To characterize the effectiveness of the respective surface hardening methods, samples of a Ti-6Al-4V alloy were self-quenched, laser-nitrided, laser-carburized, laser-carbonitrided at the same laser irr...
[태그] Laser surface hardening Ti-6Al-4V|Carburizing Nitriding|Ti-6Al-4V 합
[논문] Ti-TiH₂ 혼합 분말의 레이저 직접 용융 공정을 이용한 다공성 티타늄 부품 제조 연구
Direct Laser Melting (DLM) of Ti- χTiH₂ (mixing ratio χ = 2, 5, 10 wt.%) blended powder is characterized by producing porous titanium parts. When a high energy laser is irradiated on a Ti-TiH₂ blended powder, hydrogen gas (H₂) is produced by the accompanying decomposition of the TiH₂ powder, and acts as a pore-forming and activator. Th...
[태그] Porosity Titanium Hydride|Processing Parameters Direct Laser Melting|Ti-TiH₂ 혼합
[논문] 티타늄 자전거의 다중 조인트 접합을 위한 초소성 하이드로포밍과 확산 접합 기술
The superplastic forming/diffusion bonding process has been developed to fabricate a core frame structure with joint nodes out of tubes, for the development of a titanium high performance bicycle. The hydroforming process has been applied for bulging of a tube in the superplastic condition before, and during the diffusion bonding proce...
[태그] Titanium bicycle Multi joint node|Superplastic hydroforming Diffusion bonding|티타늄 자전
[논문] 비선형 열전달 계수를 사용한 알루미늄 6082 빌렛의 열간 압축 공정 해석
In order to reduce the weight of automobile parts, automobile parts using aluminum alloy are being developed. Aluminum alloy for automobile parts is mainly made of Al6xxx (Al-Mg-Si) type alloy, which is excellent in hot forming property, and it can increase mechanical properties by the use of heat treatment. In this study, hot forming ...
[태그] DEFORM-3D Automobile parts|Al 6082 Hot forming|비선형 열전
[논문] 시각력응답해석에 의한 설계를 지원하는 종합구조계산 프로그램 RESP-D
1. 머리말 2. 기획·제안에서 실시설계까지 RESP-D 하나만으로 완결 3. 입력·표시기능의 특징 4. 설계 지원·해석 기능의 특징 5. 지원기능 6. 출력기능의 특징
[태그] |시각력응답해

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