서지주요정보
Active engine mount system for a vehicle with variable cylinder management = 가변 실린더 운영을 위한 차량의 능동 엔진 마운트 시스템
서명 / 저자 Active engine mount system for a vehicle with variable cylinder management = 가변 실린더 운영을 위한 차량의 능동 엔진 마운트 시스템 / Hafiz Farhan Maqbool.
저자명 Maqbool, Hafiz Farhan
발행사항 [대전 : 한국과학기술원, 2011].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8022447

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 11053

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The variable displacement technology developed to improve the fuel efficiency engine system is going to be widely adopted because fossil fuels are in danger of running out. VCM (Variable Cylinder Management) Engine, one of the various adaptations of variable displacement technology, makes 2 or 3 cylinders be deactivated when driving at constant speed or on a downhill road. If the chassis vibration originated from the engine oscillation is changed abruptly due to intentional misfiring of cylinders in VCM engine, it can give driver and passenger unpleasant feelings. So we have to make the vibration characteristics be kept unchanged during engine’s operational mode change. There are two additional issues to be investigated for successful application of the proposed method. To improve the control efficiency we have to find minimum energy solution. The other issue is that the transient response should be unnoticeable as the state is changing between two operating modes: normal mode and VCM activated mode. VCM engine and chassis modeling is constructed based on a full size sedan. In order to minimize the chassis vibration, an open loop control is applied to eliminate the transient feelings and then we propose an adaptive control algorithm after modifying the conventional Filtered-x LMS algorithm to generate the desired vibration characteristics. Structure vibration suppression depends not only on control law design but also on sensor/actuator selection and placement. The location of the active engine mounts on the chassis is found out where we can get the minimum energy and the performance. We minimize the three translational motions at the head rest position since according to research; head vibration is a critical factor in determining the acceptability of whole body vibration. In order to improve the performance a third actuator has been added in Y direction to the third engine mount position, while the first and second actuator are installed in Z direction of the two main engine mounts. Performance has been increased in both cases compared to two actuators’ case; however, power consumption has been increased. Simulation results show that the proposed method is very effective to eliminate the discomfort caused by the abrupt jerk in transient region and reduce the overall vibration level.

서지기타정보

서지기타정보
청구기호 {MME 11053
형태사항 90p : 삽도 ; 26 cm
언어 영어
일반주기 지도교수의 영문표기 : Young-Jin Park
지도교수의 한글표기 : 박영진
공동교수의 영문표기 : Youn-Sik Park
공동교수의 한글표기 : 박윤식
Includes appendix.
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 References : p. 69-71
주제 Active
Engine
Mount
Vibration Control
능동
엔진
마운트
진동 제어
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