Mode Switching Coordinated Control of the Oil-Electric Hybrid and Machine-Hydraulic Recombination Power Transmission System

ZHU Zhen; ZHANG Qinbo; ZHANG Hongwei; WANG Dehai; CHEN Long

doi:10.7652/xjtuxb202506019

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Mode Switching Coordinated Control of the Oil-Electric Hybrid and Machine-Hydraulic Recombination Power Transmission System

更新时间：2025-08-26

- Mode Switching Coordinated Control of the Oil-Electric Hybrid and Machine-Hydraulic Recombination Power Transmission System
- Journal of Xi’an Jiaotong University Vol. 59, Issue 6, Pages: 185-197(2025)
- 作者机构：
  
  1.江苏大学汽车工程研究院， 212013，江苏镇江
  2.特种车辆设计制造集成技术全国重点实验室， 014030，内蒙古包头
  3.浙江大学流体动力与机电系统国家重点实验室， 310027，杭州
  4.江苏大学农业工程学部， 212013，江苏镇江
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202506019
  CLC： U463.2
- Received：19 November 2024，
  
  Online First：17 February 2025，
  
  Published：10 June 2025
- 稿件说明：
移动端阅览
ZHU Zhen, ZHANG Qinbo, ZHANG Hongwei, et al. Mode Switching Coordinated Control of the Oil-Electric Hybrid and Machine-Hydraulic Recombination Power Transmission System[J]. Journal of Xi’an Jiaotong University, 2025, 59(6): 185-197.
DOI：

ZHU Zhen, ZHANG Qinbo, ZHANG Hongwei, et al. Mode Switching Coordinated Control of the Oil-Electric Hybrid and Machine-Hydraulic Recombination Power Transmission System[J]. Journal of Xi’an Jiaotong University, 2025, 59(6): 185-197. DOI： 10.7652/xjtuxb202506019.

摘要

针对车辆动力传动系统模式切换过程中平稳性不足的问题，设计了一款油电混合-机液复合动力传动系统，将电机和发动机集成作为双动力源，通过机械-液压复合传动装置实现高效动力传递。研究从构型设计和动力传动模式分析入手，分别建立动力系统、传

动系统、切换元件及整车动力传动系统的等效动力学模型，以电机低档切换至混合动力转矩耦合这一复杂过程为典型研究对象，建立物理模型，设计模糊比例、积分、微分（PID）控制器以调节电机转速，结合正交试验法优化切换元件的切换时序，实现电机与切换元件的复合控制。仿真结果表明：优化后的系统显著改善了模式切换的平稳性，输出轴的最大冲击度由11.418 8 m/s

降低至8.112 7 m/s

，转矩波动系数由4.771减小至3.874，转速波动幅度由17.118 6%降低至2.350 0%，切换时间由1.5 s缩短至0.7 s。硬件在环（HIL）测试实验进一步验证了该控制策略在不同模式切换及复杂工况条件下均能表现出良好的适用性和稳定性。

Abstract

To address the issue of insufficient smoothness during mode transitions in the power transmission system of vehicles

a hybrid power hydro-mechanical composite power transmission system was developed. This system integrates an electric motor and an engine as dual power sources and achieves efficient power delivery through a mechanical-hydraulic composite transmission mechanism. Starting from configuration design and power transmission mode analysis

equivalent dynamic models were established for the power system

transmission system

switching components

and the overall vehicle powertrain system. With the complex process of motor low-gear switching to hybrid torque coupling taken as a typical research scenario

a physical model was developed. A fuzzy PID controller was designed to regulate motor speed

and the switching sequence of the transmission components was optimized using an orthogonal experiment method

enabling composite control of the motor and switching components. Simulation results demonstrated that the optimized system significantly improved transition smoothness: The maximum impact on the output shaft was reduced from 11.418 8 m/s

to 8.112 7 m/s

the torque fluctuation coefficient decreased from 4.771 to 3.874

the speed fluctuation amplitude dropped from 17.118 6% to 2.350 0%

and the switching time was shortened from 1.5 s to 0.7 s. Hardware-in-the-loop (HIL) tests further validated the effectiveness of the control strategy

showing robust adaptability and stability under various mode transitions and working conditions.

关键词

Keywords

references

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