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A dynamic vehicle test bench and method for all working conditions

A technology for vehicle testing and full working conditions, which is applied in vehicle testing, machine/structural component testing, measuring devices, etc. It can solve problems such as slow dynamic response, low control accuracy of load rollers, and difficulty in simulation, and achieve dynamic response fast effect

Active Publication Date: 2020-01-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the friction of the rotating shaft, the load of the load roller is small and the control accuracy is very low; because the change of the roller position takes a long time and the dynamic response is slow, it is difficult to simulate the sudden change of the road surface during the operation of the car

Method used

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  • A dynamic vehicle test bench and method for all working conditions
  • A dynamic vehicle test bench and method for all working conditions
  • A dynamic vehicle test bench and method for all working conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment one: see Figure 1 ~ Figure 3, the full-condition dynamic vehicle test bench adopts the following technical scheme: a full-condition dynamic vehicle test bench, including an upper computer, a chopper, a DC power supply, a frequency converter, an infrared lamp, a fan, several A set of dynamic hub / wheel edge test units, several motor controllers, a power analyzer and a bidirectional DC power supply; it is characterized in that: the several sets of dynamic hub / wheel edge test units are electrically connected to the bidirectional DC power supply through the motor controller; The fan is electrically connected to the DC power supply through the frequency converter; the infrared lamp is electrically connected to the DC power supply through the chopper; the several sets of dynamic hub / wheel edge test units are connected to the upper computer through the motor controller; the chopper and the frequency converter are connected to the upper computer; the power The analyz...

Embodiment 2

[0041] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special points are as follows: the dynamic wheel hub / wheel edge test unit includes a base, a rotating table, a servo motor, a reduction gear and a wheel hub / wheel edge motor; The table is rotated and installed on the base through bearings, and the rotary table is connected to the servo motor through the reduction gear; the servo motor is electrically connected to the motor controller; the rotor of the hub motor is supported on a stator bracket through the bearing, and the coil of the stator of the hub motor It is fixed on the stator bracket together with a torque / speed sensor, and the stator bracket is fixedly installed on the rotary table; the rotor of the hub / wheel motor is connected to a flange through a flexible coupling.

Embodiment 3

[0042] Embodiment 3: This full working condition dynamic vehicle test method adopts the above-mentioned test bench for testing, and is characterized in that the specific operation steps are as follows:

[0043] 1) Park the vehicle under test at the test location. The vehicle under test is a new energy vehicle or a traditional energy vehicle. The vehicle under test should be in front of the fan and under the infrared lamp to obtain accurate heat dissipation airflow and light;

[0044] 2) Lift the vehicle under test by a jack or a vehicle lift to lift the tires off the ground;

[0045] 3) Remove one tire of the vehicle under test;

[0046] 4) Adjust the position of the axis of the dynamic hub / rim test unit;

[0047] 5) Adjust the height of the lifting device and the dynamic hub / wheel edge test unit so that the axle of the vehicle under test is aligned with the hub wheel motor shaft of the dynamic hub / wheel edge test unit;

[0048] 6) The flange connecting the hub wheel motor s...

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Abstract

The invention relates to an all condition dynamic finished automobile testing rack and method. The testing rack includes an upper computer, a chopper, a DC power source, a frequency converter, an infrared light, a fan, multiple sets of dynamic hub / rim testing units, a plurality of motor controllers, a power analyzer and a bidirectional DC power source. The multiple sets of dynamic hub / rim testingunits are electrically connected with the bidirectional DC power source. The fan is electrically connected with the DC power source. The multiple sets of dynamic hub / rim testing units are connected with the upper computer. The chopper and the frequency converter are connected with the upper computer. The power analyzer is connected with AC buses and DC buses of the motor controllers. The method includes jacking a to-be-tested automobile and dismounting tires, adjusting motor shafts of the multiple sets of dynamic hub / rim testing units of the rack to align to the automobile axle and to connectwith the automobile axle, starting the upper computer to perform calculation of longitudinal force, lateral force and wind speed and virtual driving scene display and starting testing.

Description

technical field [0001] The invention relates to the field of automobile testing and testing, in particular to a full-working-condition dynamic vehicle testing bench and method. Background technique [0002] Chassis dynamometer is a kind of indoor bench test equipment used to test the performance of automobile power, multi-condition emission indicators, fuel indicators, etc. The automobile chassis dynamometer simulates the road surface through the roller, calculates the road simulation equation, and simulates it with the loading device to realize the accurate simulation of the various working conditions of the automobile. It can be used for loading and debugging of automobiles, diagnosing the faults of automobiles under load conditions; it forms a comprehensive measurement system together with five gas analyzers, transmission smoke meters, engine tachometers, and computer automatic control systems to measure different working conditions Under the car exhaust emissions. Comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01M17/06
CPCG01M17/007G01M17/06
Inventor 罗建马鸿泰汪丹妮王超然
Owner SHANGHAI UNIV