4축 유압 로드시뮬레이터의 노면형상재현을 위한 변위신호의 생성

Full scale durability test in the laboratory is an essential of any fatigue life evaluation of components of structures of the automotive vehicle. Component testing is particularly important in today's highly competitive industries where the design to reduce weight and production costs must be balanced with the necessity to avoid expensive service failure. Generally, hydraulic road simulator is used to carry out the fatigue test and the vibration test. In this parer, four-axial road simulator with hydraulic power and driving program to operate are made up. In case of real-vehicle, the top and bottom's displacement component of data realized by vehicle's wheel is the main component. The displacement road profile is realized by accelerometers. For the verification the real-vehicle experiment is executed and road profile obtained from the experiment is verified by four-axial road simulator.