| 摘要 |
PURPOSE:To reproduce the state close to an actual vehicle and to test self-excited vibration caused by especially negatively inputted vibrations, by providing a pair of a spring type load absorbing device and a power steering device, and also providing two servo hydraulic actuators as positive and negative input vibrating devices. CONSTITUTION:When a switch is thrown to the positive input side, a servo hydraylic actuator 27 is actuated, a vibration input corresponding to a control signal is imparted to an input shaft 22, and a power steering device 20 is actuated. The power transmitted to a load absorbing device 11 through a rotary arm 15 is absorbed by a torsion bar 13, and self-excited vibration is reproduced. When the switch is thrown to the negative input side, a servo actuator 36 is actuated, and a reverse input is imparted to the steering device 20. Under this state, the actuator 27 is actuated through a torsion bar 23. Since the torsion bar 23 performs the absorbing action of the vibration imparted by a road surface, the self-excited vibration can be reproduced by the switching action under the state close to an actual vehicle. |
