Patent ID: 8175838
Filing Date: 2012-05-08
Classification: G01M

Abstract:
1. A vehicle running test device comprising: a roller on which a wheel of a vehicle is mounted, the roller being rotated by rotation of the wheel; a running resistance calculating section that calculates a running resistance of the vehicle on an actual ground based on a vehicle speed determined based on rotation of the roller and a friction coefficient between the wheel and a ground surface of the actual ground; a running resistance applying section that applies a torque corresponding to the running resistance to the roller; a correcting section that calculates a slip ratio of the wheel with respect to the roller, the friction coefficient between the wheel and a ground surface of the actual ground which is based on the slip ratio, and a friction coefficient between the wheel and the roller, the correcting section correcting the running resistance calculated by the running resistance calculating section such that the friction coefficient between the wheel and the roller becomes equal to the friction coefficient between the wheel and the actual ground; and a first restrictor that restricts displacement of the vehicle from the roller without affecting a load applied to the roller by the wheel.