http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 주제어 : Active Tilt Controller (검색결과 6 건)
- 무료
- 기관 내 무료
- 유료
-
Liang Wu,Ahmac Ejaz,KHAN MUHAMMAD ARSHAD,윤일중 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.4
This research presents an integration of two control systems, an active tilting controller and a full-wheel steering controller. This integration improves vehicle lateral performances by enhancing road-holding capability, lateral stability, and safety simultaneously. The active tilting controller utilizes an active mass shift to evenly distribute the vertical load at each suspension, and boost road-holding capability. On the other hand, the full-wheel steering controller adjusts rear steering angles to use lateral force at each ground-tyre contact point and amplify the vehicle’s ability to follow the desired yaw rate and global sideslip angle during cornering maneuvers. Considering the improved road-holding capability and the coupling effect of body attitude motion and yaw motion, the two controllers in combination produce a synergistic effect on ride comfort, maneuverability and safety, and improve overall lateral performance. A 7-degree-of-freedom (DOF) linear full car model is used in designing the active tilting controller, while a 2-DOF bicycle model considering the attitude motion of the car body is used in designing a full-wheel steering controller. A 14-DOF complex nonlinear full car model that can truly reflect 6-DOF car body motion is applied to verify the performance of the proposed collaborative system. The simulation results show that the system represents a better lateral stability and steering response in intense driving while ensuring the better heading directivity of the vehicle.
-
Application of Semi-active TMD to Tilted High-Rise Building Structure Subjected to Seismic Loads
김현수,강주원 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.5
Landmark structures are commonly constructed as tall buildings with complex shapes, such as twisted, tilted, and tapered towers. Although the appearances of these buildings are attractive, their structural safety must be investigated more carefully in comparison with conventional high-rise buildings. Especially in the case of a tilted high-rise building, lateral displacement even occurs from its own weight. Therefore, seismic response reduction is a very important issue for a tilted-form tower to secure structural safety. In this study, a semi-active tuned mass damper (SATMD) was employed for a tilted high-rise building subjected to seismic excitations, and its dynamic-response reduction capacity was evaluated. Two 300-kN magnetorheological (MR) dampers were employed to make a SATMD, which was installed on the top of a 100-story tilted example building. A fuzzy inference system controller (FISC) was used to make appropriate command voltages to control the SATMD. The various design parameters of the FISC were optimized by an evolutionary multiobjective optimization technique. A conventional semi-active groundhook controller was also used for comparison. The control performance of the proposed SATMD was compared to that of a conventional optimal passive TMD. The numerical results show that the fuzzy-controlled SATMD provided the best control performance. The proposed SATMD provided similar control performance while using only less than 30% of the mass quantity compared to passive TMD.
-
도시형 지상 차량의 승차감 향상을 위한 새로운 능동형 기울임 제어 시스템에 관한 연구
소상균,변기식 한국융합신호처리학회 2001 융합신호처리학회 논문지 (JISPS) Vol.2 No.2
To reduce the traffic congestion and parking problems in urban areas tall and narrow vehicles have interested as a means to increase the utilization of existing freeways and parking facilities. The stability problem for those narrow vehicles which might be caused can be reduced by tilting the body toward the inside of the turn. The Direct Tilt Control(DTC) system and the Steering Tilt Control(STC) system have been proposed for those narrow vehicles. In this paper, as one of the performance improvement for that kind of vehicle a new control system to use the merits of both the DTC system and the STC system is proposed. Because two different control systems fight each other, the switching control scheme is applied as a means to prevent fighting. Also, the method in order to achieve the smoothly changed control system when the system is switched from the DTC to the STC or from the STC to the DTC, the appropriate type of control gain is designed. 기존 도로시설과 주차시설의 이용율을 높이기 위해 높이가 높고 폭이 좁은 차량의 이용에 관심이 증대되고 있다. 그러나 이러한 종류의 차량은 선회시 안쪽으로 기울어짐으로 안정도 문제가 중요하다. 직접 기울임 제어 방법과 스티어링 기울임 제어 방법이 폭이 좁은 차량의 안정도를 위해 제안되고 있다. 본 논문에서는 직접 기울임 제어법과 스티어링 기울임 제어법의 장점을 이용한 새로운 제어법을 제안한다. 즉 서로 상반된 제어 특징을 갖는 두 제어 법을 스위칭 제어 방식으로 제어하게 되며, 제안된 제어기의 원활한 스위칭 전환을 위해 적당한 제어이득이 제안된다.
-
폭이 좁은 지상 차량의 승차감 향상을 위한 서로 다른 두 개의 능동형 기울임 제어 시스템들의 결합에 관한 연구
소상균 한밭대학교 생산기반기술연구소 2001 생산기반기술연구소 논문집 Vol.1 No.1
To reduce the traffic congestion and parking problems in urban areas tall and narrow vehicles have interested as a means to increase the utilization of existing freeways and parking facilities. The stability problem for those narrow vehicles which might be caused can be reduced by tilting the body toward the inside of the turn. The Direct Tilt Control(DTC) system and the Steering Tilt Control(STC) system have been proposed as those narrow vehicles. In this paper a new control system to blend both the DTC system and the STC system is proposed. The combined control system can be more effective in feeling perceived by passenger than each system only. In other word, it uses the merits of both the DTC system and the STC system. As a control strategy for combination the switching control method is introduced and the control gains to reduce the sudden jumps in responses right after switching designed.
-
-
IACTS: A Novel Indoor Active Camera Tracking System
Yahya Imad Mohammed,Jong Myung Rhee 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.10
An active camera tracking system (ACTS) is comprised of a camera that can rotate automatically toward an object of interest so the object remains within the camera’s field of view. To rotate the camera toward an object, the camera needs to detect the object’s location. Detecting an object’s location can be achieved using image processing techniques. However, conventional image processing techniques require expensive calculations in addition to expensive hardware, which in turn limits the video frame processing speed. In this paper, we propose an effective ACTS to monitor and track objects automatically with high accuracy. The proposed approach automatically initializes the object to be tracked using an absolute difference motion detection technique. To track the object correctly, the minimum output sum of squared error (MOSSE) adaptive correlation tracker is applied to provide an accurate and fast visual tracking. We also implemented an accurate scale estimation for the visual tracking technique that detects the scale changes of the object. Additionally, the proposed ACTS uses a closed loop controller to control the pan-tilt speed of the system. By combining these techniques, the proposed ACTS can provide accurate tracking with smooth rotation.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
