The disclosure provides a vehicle excitation advice. The vehicle excitation device that excites a vehicle having a plurality of wheels includes a plurality of excitation machine bodies on which the wheels are placed, respectively. The excitation machine body includes a front shaft and a rear shaft on which the wheels are placed at intervals in the in the front-rear direction of the vehicle, and an actuator (hydraulic actuator) that excites vibration to the wheels by moving at least one of the front shaft and the rear shaft in the front-rear direction. The front shaft is inclined such that the inner end portion of the front shaft in the left-right direction of the vehicle is located closer to the front of the vehicle than the outer end portion of the front shaft in the left-right direction of the vehicle.

In a vehicle action simulation method according to the present invention, a behavior of an actual vehicle during travel is predicted, and an attitude of a tire and a rotational speed of a rotary drum are changed to reproduce a transient change in a tire attitude that occurs during the travel of the actual vehicle on the tire while the predicted behavior of the actual vehicle during travel is reflected, stress applied to the tire in contact with the rotary drum of a tire ground contact characteristic measuring portion is measured, tire ground contact characteristics are calculated, the behavior of the actual vehicle during travel is predicted while vehicle characteristics predicted from the tire ground contact characteristics are reflected, and the prediction, the reproduction, the measurement of stress, and the calculation are performed in parallel.

Described herein are robotic platforms and associated features that may have applicability in a wide variety of applications and industries, but that may have particular applicability in automotive testing and testing of vehicles having autonomous or semi-autonomous driving features. Robotic platforms may include a low-profile chassis, one or more rotational elements coupled to one or more drive motors and supported within the chassis, and a control system coupled to and controlling the drive motor(s). Also disclosed are suspension systems that may maintain the chassis of a robotic platform above the ground in use but that allows the chassis to ground out when subject to a pre-determined load, thereby spreading the load across the chassis.

The disclosure provides an excitation device capable of reproducing an excited state during traveling of a vehicle, reducing the cost, and realizing vehicle maintenance during excitation. An excitation device (1) holds a wheel (W) of a vehicle (V) between a first roller (17) and a second roller (16), and drives the second roller (16) in a front-rear direction with a hydraulic actuator (12) to excite the wheel (W). A ground base (18) is arranged between the first roller (17) and the second roller (16), and an interval between an upper end of the ground base (18) and the upper ends of front and rear mounting plates (5) and (6) which are the highest is set to a value smaller than a minimum ground clearance of the vehicle (V).

The disclosure provides an excitation device capable of suppressing resonance during excitation and reducing the size in a vertical direction. An excitation device (1) includes front and rear mounting plates (5 and 6) having openings (5g and 6g); a base plate (8) arranged below the mounting plates (5 and 6), slope parts (3) to which the mounting plates (5 and 6) and the base plate (8) are fixed; a first roller (17) and a second roller (16) located below the openings (5g and 6g); a hydraulic actuator (12) having a hydraulic cylinder (12a) that excites the second roller (16) in a front-rear direction of a wheel (W); and a bracket (12c) having a lower end fixed to the base plate (8) and an upper end fixed to the mounting plates (5 and 6), and supporting the hydraulic cylinder (12a).

The device described herein and the associated method relate, in particular, to a holding device for a wind tunnel test stand 1, in particular for a wind tunnel balance. The device may comprise a holding base 5a, 6a, which may be arranged outside of a conveyor belt 3 of the wind tunnel test stand 1, and a support element 7 having at least two ends 7a, 7b. Via a connection element 13, one end of the support element 7 may be connected to a wheel 22 of a test object 4. Furthermore, a support device 8 may be provided, which may be connected to the support element 7 in such a way that a change in a rotational orientation of the support element 7 can cause a lifting or lowering movement of the support device 8.

Described herein are robotic platforms and associated features that may have applicability in a wide variety of applications and industries, but that may have particular applicability in automotive testing and testing of vehicles having autonomous or semi-autonomous driving features. Robotic platforms may include a low-profile chassis, one or more rotational elements coupled to one or more drive motors and supported within the chassis, and a control system coupled to and controlling the drive motor(s). Also disclosed are suspension systems that may maintain the chassis of a robotic platform above the ground in use but that allows the chassis to ground out when subject to a pre-determined load, thereby spreading the load across the chassis.

The invention relates to a test stand for the simulation of the vibration behavior of a vehicle. The test stand comprises a receiving element A for contacting with a vehicle F and an excitation system S for the application of excitation frequencies. The excitation system comprises a main actuator system H with at least one movable main actuator 10 and an additional actuator system Z with at least one movable additional actuator 20, the additional actuator system Z being connected to the main actuator system H.

Described herein are robotic platforms and associated features that may have applicability in a wide variety of applications and industries, but that may have particular applicability in automotive testing and testing of vehicles having autonomous or semi-autonomous driving features. Robotic platforms may include a low-profile chassis, one or more rotational elements coupled to one or more drive motors and supported within the chassis, and a control system coupled to and controlling the drive motor(s). Also disclosed are suspension systems that may maintain the chassis of a robotic platform above the ground in use but that allows the chassis to ground out when subject to a pre-determined load, thereby spreading the load across the chassis.

The device described herein and the associated method relate, in particular, to a holding device for a wind tunnel test stand 1, in particular for a wind tunnel balance. The device may comprise a holding base 5a, 6a, which may be arranged outside of a conveyor belt 3 of the wind tunnel test stand 1, and a support element 7 having at least two ends 7a, 7b. Via a connection element 13, one end of the support element 7 may be connected to a wheel 22 of a test object 4. Furthermore, a support device 8 may be provided, which may be connected to the support element 7 in such a way that a change in a rotational orientation of the support element 7 can cause a lifting or lowering movement of the support device 8.