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CarSim 차량 모델과 조향시스템 모델을 이용한 R-MDPS 알고리즘 개발
김기헌(Kiheon Kim),김창준(Changjun Kim),김현수(Hyunsoo Kim),한창수(Changsoo Han) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, CarSim Vehicle model with 27 degree of freedom and MDPS System model using the Simulink Block were used to verify MDPS Control Algorithm. Vehicle behavior and efficiency of Vehicle movement were made an experiment using the MDPS control algorithm with Basic Assist Control, Returnability Control and Damping Control. This experiment method has the advantage of being economy of time and low costs. In days to come, the study using the Hardware In the Loop Simulation (HILS) and real vehicle will be based on this study.
김기헌(Kiheon Kim),김창준(Changjun Kim),신현수(Hyunsoo Sin),한창수(Changsoo Han) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, R-MDPS control algorithm was developed and evaluated using HILS. R-MDPS algorithm is composed of basic assist map, vibration reduction algorithm, returnability control algorithm and damping compensator. Basic assist map and vibration reduction algorithm are basic control algorithm to assist drivers. Returnability control algorithm and damping compensator improve steering feel and vehicle safety. In this control algorithm, load torque observer is used to reduce vibration of R-MDPS system. Road load reproduction system is used to make this experiment and evaluate R-MDPS control algorithm. This System reproduced road load using CarSim vehicle model.
김창준(Changjun Kim),김기헌(Kiheon Kim),김현수(Hyunsoo Kim),한창수(Changsoo Han) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
When we study steering system, making use of HILS is general method to study. Generally, HILS of steering System is cheaper than real car test in the economical aspect and timesaving aspect. If we test various series of vehicles or use the other type of steering systems, however, uneconomical trial to establish the new HILS system. To minimize the economical and periodical loads, we would try to introduce the new HILS system to fit diverse steering systems. We design the moving column system to correspond to each other vehicles and adopt the extension unit to satisfy the many types of tread.
김창준(Changjun Kim),김현수(Hyunsoo Kim),김기헌(Kiheon Kim),한창수(Changsoo Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper is about steering system of Steer-by-Wire(SBW). As a SBW system is applied in order to improve steering feel and maneuverability, the controller should have two purposes. One is controlling steering wheel for the driver's steering feel and the other is controlling the front wheel system for vehicle stability. This study focuses on steering wheel system. The column is reduced in the SBW steering wheel system. Therefore it need artificial steering feel. This is the study for an objective evaluation method with steering angle, steering torque to quantify steering feel of SBW system. Based on this method, the affect two different torque map performance was simulated and compared each other.
좌우독립형 Steer-by-Wire시스템을 이용한 능동조향 제어알고리즘 개발
김현수(Hyunsoo Kim),김창준(Changjun Kim),김기헌(Kiheon Kim),한창수(Changsoo Han) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper is about steering system of Steer-by-Wire(SBW). The SBW system consists of two parts. One is Steering wheel system and the other is front wheel system. There is no mechanical system between the steering wheel system and front wheel system. Steering wheel system applies the appropriate steering feel to the driver. Therefore it can be tuned easier than conventional system. Front wheel system is Tie-rod actuating type which has two independent actuating. We need the algorithm that operates the front wheel system and improves the stability and the maneuverability. The algorithm in this paper is based on Ackerman constraint. The algorithm is simulated by CarSim which has 27 DOF.