A method includes providing a fixture including a target in a field of view of a sensor mounted to a vehicle. The target is detectable by the sensor. The fixture includes a first rangefinding device and a second rangefinding device spaced from the first rangefinding device. The method includes measuring a first angle and first distance from the first rangefinding device to a first known point on the vehicle; measuring a second angle and second distance from the second rangefinding device to a second known point on the vehicle; determining a position and orientation of the target in a coordinate system relative to the vehicle based on the first angle, the first distance, the second angle, and the second distance; and calibrating the sensor based on the position and orientation of the target.

This disclosure describes systems and methods used in the development and validation of autonomous vehicles ability to track objects with sensors. This application describes a self-propelled autonomous platform and methods for carrying a pedestrian, cyclist or vehicular type target in a predetermined pattern during one or more testing runs. The self-propelled autonomous platform includes a sensor configured to retract within a platform housing of the self-propelled autonomous platform when being driven over during a test run.

This disclosure describes systems and methods used in the development and validation of autonomous vehicles ability to track objects with sensors. This application describes a self-propelled autonomous platform and methods for carrying a pedestrian, cyclist or vehicular type target in a predetermined pattern during one or more testing runs. The self-propelled autonomous platform includes a sensor configured to retract within a platform housing of the self-propelled autonomous platform when being driven over during a test run.

A method for checking and/or configuring the arrangement of physical elements of a vehicle includes providing a test apparatus configured to simulate the arrangement of the physical elements of the vehicle and having a support structure to which one or more physical elements are joined, adjustable relative to the support structure, acquiring or processing a virtual model representative of an arrangement of the one or more physical elements relative to the support structure and physically positioning the one or more physical elements according to the virtual model arrangement, defining a first reference point, a position of the first reference point relative to the support structure being known, and measuring a relative distance between the first reference point and a second reference point on a virtual reality viewer, interfacing a user with an electronic processing unit, and acquiring and transmitting data indicative of the user's movements to the electronic processing unit.

The present invention discloses a compilation method for a reliability test load spectrum of a high-speed bearing of an electric drive system. The method comprises the following steps: based on load data of a whole life cycle of an electric drive system, correlating a leading failure load of a high-speed bearing; counting an action frequency of each load level by a multi-dimensional load joint counting method; constructing a bearing mechanical balance equation; determining a reliability test load level by damage contribution distribution and cumulative damage contribution distribution of different load levels; according to a principle of a consistent overall frequency and consistent damage, determining a time of the reliability test load level; and in combination with extreme load working conditions, finally constructing a reliability test load spectrum of the high-speed bearing. The constructed reliability test load spectrum is correlated to an actual failure mode, which can effectively verify a reliability level of the high-speed bearing, shorten reliability test time and provide support for high-quality development of the high-speed bearing.

The present invention discloses a compilation method for a reliability test load spectrum of a high-speed bearing of an electric drive system. The method comprises the following steps: based on load data of a whole life cycle of an electric drive system, correlating a leading failure load of a high-speed bearing; counting an action frequency of each load level by a multi-dimensional load joint counting method; constructing a bearing mechanical balance equation; determining a reliability test load level by damage contribution distribution and cumulative damage contribution distribution of different load levels; according to a principle of a consistent overall frequency and consistent damage, determining a time of the reliability test load level; and in combination with extreme load working conditions, finally constructing a reliability test load spectrum of the high-speed bearing. The constructed reliability test load spectrum is correlated to an actual failure mode, which can effectively verify a reliability level of the high-speed bearing, shorten reliability test time and provide support for high-quality development of the high-speed bearing.

A vehicle vibration method suitable for performing a test simulating a rough road, the vehicle vibration method using a vibration device that causes at least one wheel of a test target vehicle, the method including: an initial height setting step including setting a shaft distance in the front-rear direction between a front shaft and a rear shaft to an initial setting distance and setting the wheel at an initial setting height; a vibration step including performing vibration by at least one selected from a raising operation step including narrowing the shaft distance from the initial setting distance to raise the wheel from the initial setting height, and a lowering operation step including widening the shaft distance from the initial setting distance to lower the wheel from the initial setting height; and a return step including setting back the shaft distance to the initial setting distance.

A vehicle vibration device including: a variable mechanism which makes orientation of the front shaft variable in order to vibrate wheels back and forth in a vertical direction by pinching in a front/rear direction each wheel of a vehicle by a front shaft and a rear shaft which extend in a left/right direction, and causing the front shaft to move back and forth in a horizontal direction, in which this variable mechanism includes left and right movement mechanisms which are respectively connected to both left and right ends of the front shaft and are capable of moving both the left and right ends back and forth, and causes orientation of the front shaft to vary by making movement amounts by the left and right movement mechanisms to differ, and vibrates the wheels back and forth in a vertical direction, as well as vibrating in a left/right direction.

A vehicle vibration device including: a variable mechanism which makes orientation of the front shaft variable in order to vibrate wheels back and forth in a vertical direction by pinching in a front/rear direction each wheel of a vehicle by a front shaft and a rear shaft which extend in a left/right direction, and causing the front shaft to move back and forth in a horizontal direction, in which this variable mechanism includes left and right movement mechanisms which are respectively connected to both left and right ends of the front shaft and are capable of moving both the left and right ends back and forth, and causes orientation of the front shaft to vary by making movement amounts by the left and right movement mechanisms to differ, and vibrates the wheels back and forth in a vertical direction, as well as vibrating in a left/right direction.

An augmented virtual vehicle testing system and method for presenting graphics to a vehicle operator during operation of a vehicle. The method includes: determining a position of a vehicle operator within a vehicle testing environment; executing an augmentative simulation of the vehicle testing environment, wherein the augmentative simulation is used to provide a position of one or more virtual objects within the vehicle testing environment; generating graphics representing the one or more virtual objects based on the position of the vehicle operator and the position of the one or more virtual objects within the vehicle testing environment; and presenting the graphics on an electronic display and to the vehicle operator during operation of the vehicle.