Hybrid electric vehicle control method based on model prediction control

A hybrid electric vehicle, model predictive control technology, applied in the automotive field, can solve the problems of large amount of calculation and high equipment cost

Inactive Publication Date: 2013-03-20
TSINGHUA UNIV
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Problems solved by technology

[0005] The present invention proposes a hybrid electric vehicle control method based on model predictive control to solve the technica

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  • Hybrid electric vehicle control method based on model prediction control
  • Hybrid electric vehicle control method based on model prediction control
  • Hybrid electric vehicle control method based on model prediction control

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. The preferred embodiments described in this section are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0022] This embodiment provides a control method for a hybrid electric vehicle based on model predictive control. Such as figure 1 As shown, the method includes:

[0023] Step S101: Predicting the required torque when a predetermined time interval passes based on a mathematical model;

[0024] This step specifically includes predicting the position of the accelerator pedal within a predetermined time interval based on a mathematical model, and determining the required torque according to the position of the accelerator pedal. The mathematical model can be an exponential decay model or a Markov chain model.

[0025] The exponential decay model is specifically:

[0026] 1) When the...

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Abstract

The invention provides a hybrid electric vehicle control method based on model prediction control. The control method comprises the following steps: predicating a required torque at a preset time internal on the basis of a mathematic model; obtaining optimization parameters; determining an engine torque and a motor torque according to the required torque and the optimization parameters; and respectively transmitting the engine torque and the motor torque to an engine controller and a motor controller. According to the method provided by the invention, the condition that a driver operates an accelerator pedal is predicated, and the acquired predication information is used for carrying out real-time optimization on energy distribution of a hybrid electric vehicle, so that the hybrid electric vehicle is more oil-saving.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a hybrid electric vehicle control method based on model predictive control. Background technique [0002] Energy shortages, environmental pollution and the continued substantial growth of car ownership have made "energy saving and emission reduction" increasingly the focus of the automotive industry. Compared with single internal combustion vehicles, hybrid vehicles have the advantages of energy saving and low emission, but to fully realize the potential of energy saving and low emission, it is necessary to optimize the multi-energy control strategy of the whole vehicle, so that the engine and motor work as much as possible. Efficiency Zone for improved fuel economy and emissions performance. [0003] The control strategy of hybrid electric vehicle is very important to improve the fuel economy and emission performance of the hybrid system. Common hybrid vehicle control strategies inc...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W10/06B60W10/08B60W20/11B60W20/15
CPCY02T10/6286Y02T10/6243Y02T10/56Y02T10/40Y02T10/62
Inventor 黄开胜曾祥瑞孟凡博
Owner TSINGHUA UNIV
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