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피팅 알고리즘을 적용한 차량의 위치와 방위각 추정 방법
고재욱(Jaeuk Koh),이호승(Hoseung Lee),이재천(Jae-Cheon Lee),권태황(Taehwang Kwung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The position of a vehicle can be pursued through the degrees of the longitude and latitude which GPS catches. The aim of the research is to trace the position of a vehicle in the place of poor GPS reception and to predict the direction of a moving car by means of GPS data. The GPS makes a poor signal when a vehicle passes through a tunnel or a tree-lined road, and in a certain area. The feeble GPS signal produces unstable GPS data which are unable to be used in the pursuit of a vehicle. So the data processing PC traces the present position of a vehicle using the sensors around the vehicle and an angle of its direction. A digital compass was attempted to trace the direction of a vehicle, but it was proved unreliable because of the magnetic field. Instead of the compass, we used fitting algorithm to process GPS data and to pursue the vehicle’s position, and proved it.
권태황(Taehwang Kwon),고재욱(Jaeuk Koh),채용웅(Yongung Chae),이재천(Jecheon Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Proportional directional control valve is proportional to the input signal and a relatively high speed flow control and directional control, hydraulic control valve can be fixed, as do roads, low cost, applicability and has the advantage of easy maintenance, and linear pressure and flow rate can be controlled by mainly been used for open loop control. In recent years, to improve control accuracy and hysteresis in the position sensor feedback to control the displacement of the spool by a closed-loop proportional valve controllers are now being developed and applied. Valve position sensor built into the valve and proportional valve controller was attached to the electronic proportional control valve that controls the equipment to improve the performance of the compact can hwawa. Therefore, the application of FPGA hayeoseo proportional valve controller board is designed.