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A calibration method for an automatic transmission shift quality test bench

A technology of automatic transmission and test bench, which is applied in the testing of machine/structural components, vehicle testing, instruments, etc. It can solve the problems of reducing test cycle, long test time, low precision, etc., to reduce test cycle and save energy. Effects of improving test time and test accuracy

Active Publication Date: 2019-07-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of long test time and low precision, the present invention designs and develops a closed-loop automatic transmission shift quality test bench, which does not need to use real vehicle tests and reduces the test cycle

Method used

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  • A calibration method for an automatic transmission shift quality test bench
  • A calibration method for an automatic transmission shift quality test bench
  • A calibration method for an automatic transmission shift quality test bench

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0107] Step 1: Carry out the actual vehicle test first. After selecting the test vehicle, install a vehicle speed sensor on its output shaft (to measure the vehicle speed), install an acceleration sensor on the chassis (to measure the acceleration of the vehicle), and use bolts on the output shaft of the power motor A flange-type torque sensor is installed through the threaded hole on the flange (that is, to measure the input torque of the automatic transmission), and an angular acceleration sensor is installed on the output shaft of the automatic transmission (to measure the angular acceleration of the output shaft of the automatic transmission), and through sampling The circuit, after several times of digital filtering and data amplification, is input to the test host by the data acquisition card for data processing and data storage. The parameters of the car are shown in Table 1;

[0108] Table 1

[0109] vehicle weight 1500kg car height 1.5m Vehicle wi...

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Abstract

The invention discloses an automatic transmission gearshift quality test board rack comprising the following parts: a drive motor; a load motor; a to-be-tested automatic transmission with an input endconnected with the drive motor, the output end of the automatic transmission is connected with a main reducing gear, an inertia flywheel and the load motor in sequence via a transmission shaft; a controller connected with the drive motor, the load motor and the to-be-tested automatic transmission, and used for controlling the drive motor, the load motor and the to-be-tested automatic transmissionand outputting a test result. The invention also provides an automatic transmission gearshift quality test board rack correction method so as to improve the testing precision; the invention also provides an automatic transmission gearshift quality test board rack gearshift quality evaluation method capable of making weighted analysis of the automatic transmission gearshift quality, thus providingmore comprehensive evaluation.

Description

technical field [0001] The present invention relates to a transmission test bench and a construction method thereof, and more specifically, the present invention relates to an automatic transmission shift quality test bench, a calibration method thereof, and a shift quality evaluation method. Background technique [0002] With the vigorous development of the automobile industry, the arrival of the energy crisis, the deterioration of the environment, the increase in the complexity of the automotive electronic control system, the increase in the workload of shift quality calibration, the changing market conditions and consumers' increasing demand for performance The high requirements are aimed at the following two current situations: the development cycle of traditional automobiles is very long. If you wait until the complete vehicle is developed before matching the gearbox, it will inevitably greatly increase the "correction" cost, and it will also prolong the time to market, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 雷雨龙张磊付尧孙飞陈魏
Owner JILIN UNIV
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