Modeling method for gear-shift schedule of automatic transmission

A technology of automatic transmission and shifting regularity, applied in the direction of elements with teeth, transmission control, belt/chain/gear, etc., can solve the problems of poor real-time and rapidity, complex modeling method, etc., to achieve model accuracy Improve, real-time and rapidity guarantee, the effect of saving resources and costs

Active Publication Date: 2013-11-20
JILIN UNIV
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  • Application Information

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Problems solved by technology

[0003] The present invention proposes a simple, fast and practical modeling method for automatic transmission shifti

Method used

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  • Modeling method for gear-shift schedule of automatic transmission
  • Modeling method for gear-shift schedule of automatic transmission
  • Modeling method for gear-shift schedule of automatic transmission

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Embodiment Construction

[0037] The technical scheme of the present invention is further elaborated below in conjunction with the drawings, according to the above-mentioned modeling method and the test data of the Hongqi HQ430 car:

[0038] 1. Obtain the vehicle parameter variable data that affects the gear

[0039] (1) Determine the parameter variables that affect the gear

[0040] The shift schedule of automatic transmission can be divided into single parameter shift, two parameter shift, and three parameter shift. The automatic transmission of Hongqi HQ430 sedan is based on two parameters: vehicle speed and throttle opening.

[0041] (2) Obtain parameter variable data

[0042] Considering the complexity of the vehicle's driving state, and ensuring that the vehicle can achieve the best shift performance in different operating conditions such as starting, changing lanes, climbing, and rounding islands, it is necessary to obtain the best possible performance of the vehicle under various driving conditions. Va...

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Abstract

The invention discloses a modeling method for the gear-shift schedule of an automatic transmission. The modeling method not only can be used for theoretical research to the automatic transmission, but also is more suitable for practical modeling for the gear-shift schedule of the automatic transmission. The modeling method comprises the following steps: 1, acquiring vehicle parameter variable data having influence on gears, and acquiring the opening degree of a throttle valve, the vehicle speed and the corresponding gear information of a vehicle under different driving operations; 2, carrying out data processing on parameter variable: classifying the acquired variable data, making a scatter diagram and eventually extracting boundary variable data points of all gears from the scatter diagram; 3, making a gear shift chart: sequentially making the gear shift chart and a gear-shift schedule MAP for gears relating to the opening degree of the throttle valve and the vehicle speed; 4, building a gear-shift schedule model: building the gear-shift schedule model and applying to the gear-shift schedule MAP. The modeling method provided by the invention solves the problems of complexity, poor real-time performance and speedability in the conventional modeling method for the gear-shift schedule.

Description

Technical field [0001] The invention relates to a method for modeling the shifting law of an automatic transmission of an automobile. The modeling method can not only be used for the theoretical research of the automatic transmission, but also suitable for modeling the shifting law of the actual automatic transmission. Background technique [0002] In recent years, China’s automobile industry has developed rapidly. Under the fierce competition in the automobile market, automobile companies must shorten the vehicle R&D cycle, reduce R&D costs, and complete more R&D work with the help of computers; in addition, model-based electronic control System development has been more and more commonly used in the development and testing of new models, and the shift schedule model is indispensable in the establishment of the vehicle model. The quality of the shift schedule modeling directly affects the dynamics of the vehicle. , Economy, safety and other issues. At present, most of the model...

Claims

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Application Information

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IPC IPC(8): F16H59/24F16H59/46F16H59/70
Inventor 郭洪艳陈虹贾瑞于海洋张华玉
Owner JILIN UNIV
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