A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.

A method for simulating cornering of a vehicle 2 being tested on a roller dynamometer 1 to determine a measured variable 13, wherein the vehicle 2 being tested on the roller dynamometer 1 is operated as though driving straight ahead, and to simulate cornering the additional resistance forces of cornering are taken into account in the form of a correction parameter 9.

A processor, responsive to a set of location or motion data describing one or more objects relative to a first, local frame of reference, generates a transformed set of location or motion data describing the one or more objects relative to a second, local frame of reference different than the first local frame of reference, such that the set of location or motion data and the transformed set of location or motion data relative to a global frame of reference are same. The processor also outputs the transformed set of location or motion data to a vehicle such that the vehicle performs control operations responsive thereto.

A load determining system having a sensorized rolling element bearing in a hub unit for wheels. The bearing includes a first ring and a second ring as an inner and outer ring. The first and second ring may be the inner ring, the other ring being the outer ring. The system includes at least two magnetic sensors attached to the first ring interact with a target wheel attached to the second ring. The system includes a signal processing unit configured to receive the magnetic sensor output of the at least one magnetic sensor, to determine at least axial forces acting on the bearing based on the amplitude of the magnetic sensor output and to calculate averages value of the outputs of the at least two magnetic sensors and to calculate a logarithm of a ratio of the average values to determine a load acting on the bearing.

A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.

A vehicle evaluation device includes a first projection target, a first projector, and a controller. The first projection target enables projection of an image thereon, and is capable of changing positions. The first projector projects an image onto the first projection target. The controller controls the position of the first projection target, and performs control for changing an image to be projected by the first projector according to the position of the first projection target.

A displacement sensor according to the disclosure detects a tire turning angle of a tire, using a distance measurement region in the tire as a detection target to obtain angle measurement information. A controller receives the angle measurement information from the displacement sensor, determines a steering angle corresponding to the tire turning angle indicated by the angle measurement information, and outputs steering angle instruction information indicating the determined steering angle to a motor drive. The motor drive drives a rotation motor of a roller rotation mechanism according to the steering angle instruction information.

A method of testing a vehicle includes positioning the vehicle on a dynamometer, operating a propulsion system to rotate drive wheels at a one or more predetermined speeds while actively adjusting a rotational position of a steering wheel to maintain straight vehicle travel on the dynamometer, measuring angle data of the steering wheel during the active adjusting of the rotational position of the steering wheel, checking the measured angle data to determine if it is outside a predetermined angular range, and outputting, in response to the angle data being outside the predetermined angular range, at least one of a repair ticket and a vehicle fault code.

A dynamometer system may comprise motorized rollers disposed on motorized rotational mounts such that the dynamometer may simulate lateral motion as well as longitudinal motion of a vehicle under test. A dynamometer system may comprise at least one roller for supporting a vehicle tire. The roller may be supported by a turn table. The roller and the turn table may be coupled to direct-drive rotational motors. The roller and the turn table may be configured to rotate about perpendicular axis. The dynamometer may be operated in a variety of modes which may allow for at least one of or combinations of evaluation of lateral dynamics, longitudinal dynamics, or vertical dynamics of a vehicle under test. In this manner, more realistic evaluation of vehicle performance can be obtained in a controlled environment.

A dynamometer system may comprise motorized rollers disposed on motorized rotational mounts such that the dynamometer may simulate lateral motion as well as longitudinal motion of a vehicle under test. A dynamometer system may comprise at least one roller for supporting a vehicle tire. The roller may be supported by a turn table. The roller and the turn table may be coupled to direct-drive rotational motors. The roller and the turn table may be configured to rotate about perpendicular axis. The dynamometer may be operated in a variety of modes which may allow for at least one of or combinations of evaluation of lateral dynamics, longitudinal dynamics, or vertical dynamics of a vehicle under test. In this manner, more realistic evaluation of vehicle performance can be obtained in a controlled environment.