Hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment

A technology for electric vehicles and hybrids, which is applied in the field of load spectrum compilation of hybrid electric vehicle reducers, and can solve the problems of preparation methods of core component reducers and few applied researches.

Active Publication Date: 2021-09-14
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for hybrid electric vehicles, which have only begun to be vigorously developed in recent years, there are relatively few studies on the fatigue dura

Method used

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  • Hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment
  • Hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment
  • Hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This embodiment discloses a method for preparing a load spectrum of a reducer for a hybrid electric vehicle, such as figure 1 As shown in , the method includes:

[0090] S1. Obtain the load data of the hybrid electric vehicle under various typical road conditions.

[0091] In this embodiment, the load data of the actual various working conditions of the hybrid electric vehicle can be collected by connecting the CAN bus; the load data includes the engine torque load, the drive motor torque load, the gear signal and the vehicle speed signal, specifically shown as load- time history data. In this embodiment, the engine torque signal and the drive motor torque signal of the vehicle at different gear positions and different vehicle speeds are collected through the CAN bus.

[0092] There are two types of implementation, and the typical road conditions include: urban road conditions, provincial road conditions, mountain road conditions and expressway conditions.

[0093] S...

Embodiment 2

[0201] This embodiment discloses a storage medium, which stores a program. When the program is executed by a processor, the method for preparing the load spectrum of the hybrid electric vehicle reducer described in Embodiment 1 is implemented, as follows:

[0202] S1. Obtain the load data of hybrid electric vehicles under various typical road conditions;

[0203] S2. Preprocessing the load data;

[0204] S3. Classify the load data according to the power source mode and road conditions;

[0205] S4. According to the classification results of the load data, the characteristic parameters of the load data are calculated, and then the optimal number of samples under various working conditions of the hybrid electric vehicle is determined;

[0206]S5. Determine the torque load samples of the reducer under each road condition according to the optimal number of samples of the hybrid electric vehicle under various working conditions, and obtain the optimal sample load of the engine and...

Embodiment 3

[0214] This embodiment discloses a computing device, including a processor and a memory for storing executable programs of the processor. When the processor executes the program stored in the memory, the hybrid electric vehicle speed reducer load described in Embodiment 1 is realized. The spectrum preparation method is as follows:

[0215] S1. Obtain the load data of hybrid electric vehicles under various typical road conditions;

[0216] S2. Preprocessing the load data;

[0217] S3. Classify the load data according to the power source mode and road conditions;

[0218] S4. According to the classification results of the load data, the characteristic parameters of the load data are calculated, and then the optimal number of samples under various working conditions of the hybrid electric vehicle is determined;

[0219] S5. Determine the torque load samples of the reducer under each road condition according to the optimal number of samples of the hybrid electric vehicle under v...

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Abstract

The invention discloses a hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment, and the method comprises the steps: obtaining vehicle load data, carrying out the preprocessing, and carrying out the classification according to a power source mode and a road working condition; calculating the load data characteristic parameters according to the classification result, determining the optimal sample number of the hybrid electric vehicle under various working conditions, further determining the speed reducer torque load samples under various road working conditions, and obtaining the optimal sample loads of an engine and a driving motor on a speed reducer after superposition; carrying out the rain flow counting statistics on the optimal sample load of the speed reducer through a rain flow counting method to obtain a rain flow matrix, obtaining an extrapolated rain flow matrix after extrapolation, namely, a full-life two-dimensional load spectrum of the corresponding automobile speed reducer, and finally, after the two-dimensional load spectrum is converted into a one-dimensional load spectrum, adopting a load spectrum compilation method, and generating a load spectrum of the speed reducer of the hybrid electric vehicle. The speed reducer load spectrum compilation can be carried out on the hybrid electric vehicle under the changeable and complex working conditions.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a method, medium and equipment for preparing a load spectrum of a reducer of a hybrid electric vehicle. Background technique [0002] With the rapid development of the economy, the sales of hybrid electric vehicles in my country, as an important transitional product for the development of new energy vehicles, have maintained rapid growth, and they are the new energy vehicle products with the best user experience at the current stage. In the process of vehicle development, it is necessary to conduct strength and fatigue tests on the transmission system, and the load spectrum is the basis for the reliability design of components. [0003] The current research on hybrid electric vehicles is mainly to improve the thermal efficiency of the engine or optimize the design of the reducer, but there are few studies on the fatigue life of the reducer of hybrid elec...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/27G06F17/18G06F119/04
CPCG06F30/15G06F30/27G06F17/18G06F2119/04
Inventor 吴伟斌王海林韩重阳高婷冉晓雷芳侯俊伟曾治亨李杰唐婷郑泽锋高昌伦
Owner SOUTH CHINA AGRI UNIV
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