Apparatus for the method of testing vehicle
AssigneeHitachi, Ltd.
InventorsMakoto Yamakado, Toshihiko Horiuchi, Takao Konno
Life of this patent
Estimating the term…
Abstract
Provided is a vehicle testing apparatus which involves load variation and alignment variation, for analyzing a maneuverability of a vehicle on flat belts or rollers adapted to be rotated together with wheels of the vehicle, and in particular, maneuver variation. Load variation caused by an inertia force and a gravitational force which are produced during actual running of the vehicle, and tire alignment variation caused by suspension strokes, are forcibly reproduced by forces produced by actuators or a gravitational force, thereby it is possible to evaluate a maneuverability of the vehicle in a condition substantially the same as that during actual running of the vehicle.
Claims20
A vehicle testing apparatus for analyzing variation in behavior of a vehicle by testing a vehicle having a vehicle body and wheels on a bench incorporating a frame and a dummy road surface element adapted to rotatably support and serving as a dummy road surface, comprising:
- actuators provided between the frame and the vehicle body so as to effect a load shift among the wheels of the vehicle;
- a force measuring device having a sensor to detect a variation in load produced in the vehicle and to measure a relative force effected between the bench and the vehicle;
- and
- a controller to control drive of the actuators in accordance with a force measured by the force measuring device, in order to control a force effected between the vehicle and the bench.
A method of testing a vehicle having a vehicle body and wheels on a bench incorporating a frame and a dummy road surface element adapted rotatably support and serving as a dummy road surface, comprising the steps of:
- driving actuators provided between the frame and the vehicle body so as to effect load shift among the wheels of the vehicle;
- detecting a variation in load produced in the vehicle for measuring a relative force between the bench and the vehicle;
- and
- controlling drive of the actuators in accordance with the measured relative force in order to control a force effected between the bench and the vehicle.
A vehicle testing apparatus for analyzing variation in behavior of a vehicle by testing a vehicle a vehicle body and wheels on a bench incorporating a frame and a dummy road surface element adapted to rotatably support and serving as a dummy road surface, comprising:
- effecting means provided between the frame and the vehicle body, for effecting a load shift among the wheels of the vehicle;
- force measuring means having sensing means for detecting a variation in load produced in the vehicle and for measuring a relative force effected between the bench and the vehicle;
- and
- control means for controlling drive of the effecting means in accordance with a force measured by the force measuring means, in order to control a force effected between the vehicle and the bench.
Dependencies are inferred from the claim text.