摘要:
A field agricultural machinery test platform, comprising a field soil groove, traveling guide rails, traveling trolleys, a hitch trolley, a hitch device mechanism, and a test system. The two guide rails are provided on both sides of the field soil groove in parallel, and the traveling trolleys are located on the guide rails; a cross beam is provided between the two guide rails, and the two ends of the cross beam are respectively connected to the traveling trolleys; the hitch trolley is provided on the cross beam, and a hitch device is provided on the hitch trolley; the test system is provided on the hitch trolley and the hitch device; a test machine is connected to the hitch device; the test system comprises an image assembly, a force test assembly, and a control assembly which are mounted on the hitch trolley.
摘要:
In accordance with exemplary embodiments, methods and systems are provided for automatically controlling braking of a vehicle during testing. In an exemplary embodiments, a testing assembly is provided that includes a roll test machine and a tester system. The roll test machine includes a flat surface, a plurality of rollers, and one or more optical controllers. The plurality of rollers are configured to engage a vehicle on the flat surface for testing of the vehicle. The one or more optical encoders are configured to generate wheel speed and brake force data for the vehicle during testing of the vehicle. The tester system includes a processor configured to at least facilitate generating instructions for brake pressure to be applied via a braking system of the vehicle during the testing of the vehicle.
摘要:
To make it possible to achieve a run under a desired condition within a predetermined allowable range, a vehicle speed pattern display device displaying upper and lower limit speed patterns and set for a predetermined prescribed speed pattern on a graph having one axis representing a vehicle speed and the other axis representing time or a running distance is adapted to display a target speed pattern different from the prescribed speed pattern on the graph.
摘要:
A dynamometer system may include a first dynamometer roll, a second dynamometer roll, a first motor, and a second motor. The first dynamometer roll is supported for rotation about a rotational axis. The second dynamometer roll is supported for rotation about the rotational axis. The first motor may include an output shaft coupled to the first dynamometer roll for rotation therewith. The first motor may be drivingly connected to the first dynamometer roll at a first location. The second motor may include an output shaft coupled to the second dynamometer roll for rotation therewith. The second motor may be drivingly connected to the second dynamometer roll at a second location. The first motor may be disposed between the first and second locations in a direction extending along the rotational axis. The second location may be disposed between the first and second motors in the direction extending along the rotational axis.
摘要:
A method of testing an automotive vehicle estimates acceleration for multiple time windows. Each of the time windows has a different length. A speed of the vehicle is measured. The acceleration vector is estimated, for the time windows, as a function of the speed and a test speed. A target acceleration is calculated by multiplying the acceleration vector by a driving mode vector. A target speed, of a driver model, is set as a function of a test cycle, the target acceleration, and the speed. The vehicle is controlled at the target speed.
摘要:
To make it possible to achieve a run under a desired condition within a predetermined allowable range, a vehicle speed pattern display device displaying upper and lower limit speed patterns and set for a predetermined prescribed speed pattern on a graph having one axis representing a vehicle speed and the other axis representing time or a running distance is adapted to display a target speed pattern different from the prescribed speed pattern on the graph.
摘要:
In a conventional chassis dynamometer, when a roller opening formed in a pit cover is closed by an open/close plate, the open/close plate is projected from an upper surface of the pit cover so that irregularities are generated on the upper surface of the pit cover. A chassis dynamometer 1 includes rollers 2, 3 on which wheels of a test vehicle are rested through roller openings 6, 7 formed in a pit cover 5, and an opening open/close mechanism 15 that opens and closes the roller openings 6, 7. The rollers 2, 3 are ascendably and descendably operated by a roller ascent/descent operation mechanism 8. The rollers 2, 3 are operated to descend, and the roller openings 6, 7 are closed by open/close plates 16.
摘要:
A method is presented for predicting a noise/comfort performance in a cabin of a vehicle with a body-shell and a suspension system linked to the body-shell by at least one point of attachment, with the vehicle rolling at a given speed on a rolling device with a macrorough rolling surface. The method includes: determining a global transfer function of the body-shell, determining a global admittance of the body-shell, determining an impedance of the suspension system, determining, while rolling on the macrorough rolling surface, lockup loads of the suspension system, and combining together the global transfer function of the body-shell, the global admittance of the body-shell, the impedance of the suspension system, and the lockup loads of the suspension system to obtain a prediction of noise/comfort performance (P) inside the cabin.
摘要:
According to the present invention, a test system 1 that tests a mobile body such as a vehicle, a vessel, and a plane, or an instrument used in the mobile body as an object, and is operable by switching among different operational modes, can accumulate an operating period of a component much more accurately than conventional system, and includes an accumulated operating-time calculating unit 46 for accumulating the operating time of the component, and the accumulated operating-time calculating unit 46 accumulates the operating time of the component only in the predetermined operational mode.
摘要:
A chassis dynamometer for a vehicle has a motor having a rotor, rollers configured to be operably connected to wheels of the vehicle, a flange portion extending inward in a radial direction from each of the rollers, and a rotor bracket for supporting the rotor of the motor. The flange portion and the rotor bracket are connected via a torque meter capable of measuring at least an outer peripheral tangential force of the roller.