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Energy control method and device for hybrid electric vehicle

A hybrid electric vehicle, energy control technology, applied in the field of control, can solve the problems of limited real-time control and large amount of control strategy calculation, and achieve the effect of improving fuel economy, fuel economy improvement, and good real-time performance

Active Publication Date: 2016-06-08
SHANDONG INST OF ADVANCED TECH CHINESE ACAD OF SCI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiments of the present invention provide an energy control method and device for a hybrid electric vehicle to solve the problem that the existing control strategy has a large amount of calculation, resulting in limited real-time control

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  • Energy control method and device for hybrid electric vehicle

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Embodiment Construction

[0024] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] The embodiment of the present invention realizes the energy management control of the hybrid electric vehicle based on the stochastic model predictive control and the neuron dynamic programming algorithm, which can improve the fuel economy of the vehicle under the premise of ensuring the power performance of the vehicle, with a small amount of calculation and good real-time performance. It ...

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Abstract

The invention belongs to the field of control technologies, and provides an energy control method and device for a hybrid electric vehicle. The method includes the steps that required power Preq(k+j) of a driver in the [k, k+p] time period is predicted, j equals 0, 1, ..., p, and k represents the current sampling time; required torque Treq(k+j) and the vehicle speed v(k+j) of the hybrid electric vehicle in the [k, k+p] time period are obtained; through nerve cell dynamic planning, the optimal control vector [u(k), ..., (k+p-1)] is calculated; and a control variable sequence u(k) of the current sampling time is output. According to the method and device, energy management control of the hybrid electric vehicle is achieved on the basis of random model prediction control and a nerve cell dynamic planning algorithm, and on the premise of guaranteeing the vehicle dynamic quality, the fuel economy of the vehicle can be improved; the calculated quantity is small, the real-time performance is good, and the fuel economy of the hybrid electric vehicle can be further improved.

Description

technical field [0001] The invention belongs to the technical field of control, in particular to an energy control method and device for a hybrid electric vehicle. Background technique [0002] The hybrid electric vehicle combines the engine, the motor and the battery, which can give full play to the advantages of the engine and the motor, and effectively realize energy saving and emission reduction. The energy management strategy of hybrid electric vehicles is the key technology that affects its fuel economy and emissions. This method is a control method of rolling optimization and rolling implementation, which predicts and optimizes according to the current state when the future road conditions are unknown, so that it can adapt to changes in working conditions and realize online adjustment. However, at present, most of the solutions of stochastic model predictive control are to obtain the exact solution of the optimal value function and the optimal control quantity, and i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/26B60W10/06B60W10/08B60W20/11
CPCB60W10/06B60W10/08B60W10/26B60W40/105B60W2510/0638B60W2510/0657B60W2510/081B60W2510/083Y02T10/40Y02T10/62
Inventor 李卫民胡悦徐回李朗
Owner SHANDONG INST OF ADVANCED TECH CHINESE ACAD OF SCI CO LTD
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