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- 저자 : 이재풍(Jae Poong Lee) (검색결과 3 건)
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이재풍(Jae Poong Lee),이경수(Kyong su Yi),신재곤(Jae Kon Shin) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
This paper proposes a reference steering wheel torque map and a torque tracking algorithm via steer-by-wire to design the targeted steering feel. The map is designed using the measurement data of rack force and steering characteristic of a target performance of the vehicle at transition steering test. Since the target performance of the vehicle is only tested in nominal road condition, various road conditions such as disturbances and tire-road friction are not considered. Hence, the measurement data of the rack force of reflecting the road conditions have been used. A motor and a magnetorheological damper are used as actuators to generate the desired steering feel using the torque tracking algorithm. The tracking algorithm is composed of feedforward and feedback control. The feedforward control uses the plant dynamics to compensate for the torque and the feedback control uses a proportional integral derivative control methodology to compensate for the error between the steering wheel torque and the reference wheel torque. The performance of the proposed controller was evaluated with various tests using computer simulations.
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이재풍 慶尙大學校 經營行政大學院 2004 사회과학연구 Vol.22 No.-
A Nongovernment organization(NGO) is an association which has nongovernmental status or function and is not created , nor are its agenda implemented by government. Some function of nongovernment organization are aid and relief at national level. They may work cooperatively with the government. This thesis attempts to find the effect of NGOs on the national policy process. We deal with three cases: national defence budget reduction, SOFA amendment and mysterious death in the military. The result of our case studies show that the NGO activities have influence changes in two of the three. The activities had little influence on the defence budget process. But in the SOFA amendment process, the agenda set by the NGOs played an important role. The amended SOFA contained the legal authority of Korean Court for the US military personnel who commits crime. The NGO activities on the mysterious death in barrack resulted in a great success. They forced the government to from a special investigation committee in the Ministry of Defence, to organize a fact-finding team attached to the office of the president, and to create a special law that allows a special investigation on each and every death case. And the National Assembly adopted the petition for the law.
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