Nowadays, ultra-compact electric vehicles have been increasingly demanded under the influence of environmental problem and the aged society. The ultra-compact electric vehicles are possible to travel on poor condition roads, such as narrow and unpaved roads. Thus, the ride comfort of the vehicles is expected to deteriorate when the ultra-compact electric vehicles travel on such road. Then it is important to reduce vibration of the vehicle. To solve these problems, we suggest active seat suspension that can be installed in ultra-compact electric vehicles. In this paper, we focused on the electrooculogram when fall from the bump of roadway boundary.
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