A vehicle test system includes a free-wheeling automobile wheel including a rim defining a rim passage, and a bearing that extends through the rim passage such that the bearing is outside the rim to support the free-wheeling automobile wheel and retracts through the rim passage such that the bearing is inside the rim.

A vehicle management ECU comprises a diagnosis section for diagnosing electronic control units that are to be diagnosed according to a diagnosis scenario defined by a diagnosis application, and a diagnosis scenario determination section for determining whether a diagnosis scenario used for diagnosis by the diagnosis section was appropriate. If the diagnosis scenario determination section specifies that the diagnosis scenario used for the present diagnosis has not been appropriate, the diagnosis section carries out diagnosis according to a diagnosis scenario defined by a new diagnosis application different from the present diagnosis application.

The present invention provides a brake dust measurement system that can accurately measure an amount of brake dust produced. The brake dust measurement system, in which a specimen having a brake is placed in a chamber and which measures brake dust produced from the brake, includes a sampling unit that samples air inside the chamber, an elemental analysis unit that performs elemental analysis of sampled air sampled by the sampling unit, a storage unit that stores elemental content information of a single or multiple elements contained in the brake, and a calculation unit that calculates an amount of brake dust contained in the sampled air on the basis of elemental analysis results of the elemental analysis unit and the elemental content information.

The present invention provides a brake dust measurement system that can accurately measure an amount of brake dust produced. The brake dust measurement system, in which a specimen having a brake is placed in a chamber and which measures brake dust produced from the brake, includes a sampling unit that samples air inside the chamber, an elemental analysis unit that performs elemental analysis of sampled air sampled by the sampling unit, a storage unit that stores elemental content information of a single or multiple elements contained in the brake, and a calculation unit that calculates an amount of brake dust contained in the sampled air on the basis of elemental analysis results of the elemental analysis unit and the elemental content information.

The subject disclosure relates to a system and method for testing units-under-test (UUT) with a thermal shock. The thermal shock testing system can include a chamber having an inlet and an outlet, the chamber being configured to provide a thermal shock to a unit-under-test (UUT), a pump configured to fluidly connect to the inlet of the chamber and direct a temperature controlled liquid through a channel embedded in the chamber, and a boiler and a chiller fluidly connected to the pump, the temperature of the liquid being controlled by at least one valve configured to alternatively direct hot or cold fluid to the inlet of the chamber.

An excitation device exciting a vehicle 12 by applying a vibration to at least one of a plurality of tires 12t of the vehicle includes: a first restricting part 16 arranged in one of a front and rear direction of at least one of the plurality of tires 12t to restrict a movement of the vehicle in the front and rear direction; a second restricting part 20 arranged in another of a front and rear direction of the one of tires 12t to restrict a movement of the vehicle in the front and rear direction; and an actuator 22 configured to be able to drive at least one of the first restricting part and the second restricting part so as to increase or decrease a distance between each other in a front and rear direction of the vehicle.

An excitation device exciting a vehicle 12 by applying a vibration to at least one of a plurality of tires 12t of the vehicle includes: a first restricting part 16 arranged in one of a front and rear direction of at least one of the plurality of tires 12t to restrict a movement of the vehicle in the front and rear direction; a second restricting part 20 arranged in another of a front and rear direction of the one of tires 12t to restrict a movement of the vehicle in the front and rear direction; and an actuator 22 configured to be able to drive at least one of the first restricting part and the second restricting part so as to increase or decrease a distance between each other in a front and rear direction of the vehicle.

This vehicle speed command generation device 1 generates a target vehicle speed command to be used by a vehicle speed control device. The vehicle speed command generation device 1 comprises: a shift processing unit 12 that receives an original vehicle speed command and generates each of a reference vehicle speed command in which the original vehicle speed command is delayed by a reference delay time, a first-out vehicle speed command in which the original vehicle speed command is delayed by a first-out delay time that is shorter than the reference delay time, and a delayed vehicle speed command in which the original vehicle speed command is delayed by a second delay time that is longer than the reference delay time; and a correction processing unit 16 that generates a target vehicle speed command by using the first-out vehicle speed command and the delayed vehicle speed command.

A fault diagnostic device 80 includes an input unit 81 and a generation unit 82. The input unit 81 receives input of observation data of a vehicle operating at a predetermined speed. The generation unit 82 extracts time series features of the observation data as features indicating a normal condition, and generates a feature master indicating the normal condition of the vehicle based on the extracted features.

The disclosure belongs to the technical field of autonomous vehicle, in particular to an automatic driving acceleration test method considering efficiency and coverage, which includes the following steps. Step 1 is definition of scenario test priority. Step 2 is zone division. Step 3 is search within zones. Step 4 is update of scenario test priorities. Step 5 is iterative test. After selecting the automatic driving function to be tested and setting the parameters of the vehicle operation zone, the scenario generation range is formed. The coverage of the test scenario is improved by dividing the generated range and setting the freedom of early autonomous driving exploration. The efficiency of the test process is improved by continuously improving the probability of generating dangerous scenarios in the test process. Thus, it is ensured that the generated test scenarios take into account both test efficiency and test coverage.