Hybrid electric vehicle mode switching coordination control method based on model prediction control algorithm

A model predictive control, hybrid vehicle technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve power interruption or output torque fluctuation, target torque deviation, and poor ride comfort for dynamic passengers and other problems, to achieve the effects of high torque control accuracy, reduced loss, and good dynamic response characteristics

Inactive Publication Date: 2016-11-09
JIANGSU UNIV
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Problems solved by technology

Hybrid vehicles have two or more driving sources. Under different combinations of driving sources, the vehicle can work in various operating modes. Due to the difference in the torque response characteristics of the engine and the electric motor, when the engine and electric motor are in

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  • Hybrid electric vehicle mode switching coordination control method based on model prediction control algorithm
  • Hybrid electric vehicle mode switching coordination control method based on model prediction control algorithm
  • Hybrid electric vehicle mode switching coordination control method based on model prediction control algorithm

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Embodiment Construction

[0024] The implementation of the present invention will be specifically described below in conjunction with the examples. The selected examples in this section are only used to explain and illustrate the present invention, and do not limit the present invention.

[0025] Step 1: Analyze the working process of the hybrid electric vehicle system and determine the driving mode of the system;

[0026] 1. Driving mode of the system Vehicle working modes are divided into pure electric mode, engine independent drive, joint drive, driving charging, regenerative braking, etc.

[0027] 2. Select the mode switching process of parallel hybrid electric vehicle from pure electric drive to joint drive as a specific embodiment to illustrate the implementation of the present invention. This parallel hybrid electric vehicle drive system includes a traditional engine, ISG and a drive motor , bounded by the clutch, the drive system is divided into two parts: the first part includes the engine and...

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Abstract

The invention discloses a hybrid electric vehicle mode switching coordination control method based on a model prediction control algorithm and relates to the field of vehicle control theories. A fast and systematic model prediction control strategy is applied to the method. On the basis of building hybrid electric vehicle mode switching process linear and nonlinear models, system operation status signals in the vehicle mode switching process are collected, control commands of all components of a system in a control period are determined through model prediction control, real-time output torque conflict of an engine, a motor and a clutch in the mode switching process is coordinately controlled, smooth and steady switching between modes is guaranteed, and the power performance of a vehicle and the riding comfort level of passengers in the mode switching process are improved. According to the control system, a good control effect can be achieved because the future requirement information of the vehicle and the performance of an optimized objective function in a prediction time domain are comprehensively considered.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a hybrid electric vehicle mode switching coordinated control method based on a model predictive control algorithm. Background technique [0002] The energy crisis and environmental pollution have put forward some new requirements for the development of the traditional automobile industry. Due to low energy consumption, low pollution, and relatively mature technology, hybrid electric vehicles have become the most practical solution to these two problems. Hybrid vehicles have two or more driving sources. Under different combinations of driving sources, the vehicle can work in various operating modes. Due to the difference in the torque response characteristics of the engine and the electric motor, when the engine and electric motor are involved During the start-stop mode switching, the synthetic torque of the power source may have a large deviation from the target torque, which will ...

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Application Information

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IPC IPC(8): B60W20/11B60W20/40
CPCB60W20/40
Inventor 汪少华贺春荣施德华姚勇何建强
Owner JIANGSU UNIV
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