Vehicle gear-shifting quality evaluation testing method and system

Abstract

The invention discloses a vehicle gear-shifting quality evaluation testing method, which comprises the steps of: 1) at a vehicle gear-shifting quality evaluation testing preparation stage: establishing a vehicle database by adopting an SQL (structured query language) server; establishing a vehicle gear-shifting quality evaluation module by adopting MATLAB/Simulink and determining the core algorithm of the vehicle gear-shifting quality evaluation module; and selecting the type of a vehicle to be tested and a testing system to be used; 2) at a vehicle gear-shifting quality testing stage: conducting gear-shifting rule testing, Tip in testing, Tip out testing, Fast Off testing, brake control logic testing, operability testing, start testing, acceleration testing and driving during a traffic jam; and 3) at a vehicle gear-shifting quality evaluation stage: calling data of the vehicle database as data input of the vehicle gear-shifting quality evaluation model and obtaining an evaluation result through data processing and the like; and outputting the evaluation result a graphical user and result display interface. The invention additionally provides a vehicle gear-shifting quality evaluation testing system.

Description

technical field [0001] The invention relates to a vehicle gear shifting quality evaluation testing method and a testing system adopted therein for realizing the overall evaluation of gear shifting quality of stepped automatic transmission systems of different vehicle types. Background technique [0002] For a long time, the evaluation of shifting quality has mostly been carried out by various automobile manufacturers using the subjective method of driver satisfaction as the measurement standard, that is, some specially trained or experienced drivers are invited to conduct real-time evaluation, and a system is evaluated by scoring the test drive. The quality of shifting is good or bad. However, a perfect system has not been formed for the evaluation of shifting quality. The traditional subjective scoring evaluation method has randomness and uncertainty, and there is no direct standard for evaluating the quality of shifting between different models; Acceleration measurement, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the objective evaluation indicators of vehicle shift quality are all based on clutch life, shift time and impact. The evaluation indicators of this evaluation method are too general and not systematic.

Based on the above problems, the present invention proposes a vehicle shift quality evaluation testing system and method, subdivides the objective evaluation index of vehicle shift quality, and uses a multi-level gray correlation method to assign weights to the shift quality evaluation index to overcome Complicated and non-linear issues between each evaluation index and shift quality performance

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