PMP-principle-based dual-state adaptive control method of plug-in hybrid power system

A hybrid system and adaptive control technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the difficulty of implementing model predictive control, the optimization effect of small calculation amount, and the inability to ensure the optimal operating state of the battery, etc. question

Inactive Publication Date: 2020-01-03
CHONGQING UNIV
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Problems solved by technology

The rule-based strategy is mainly determined based on engineering experience. It is simple to implement and fast to calculate, so it is widely used. However, due to the limitations of engineering experience, the potential of power system energy saving and emission reduction cannot be fully utilized, and there is no way to ensure that the battery works in an optimal operating state. ; Although model predictive control is an advanced control method recognized by the industry, the power system of PHEV is a complex nonlinear system, which makes it

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  • PMP-principle-based dual-state adaptive control method of plug-in hybrid power system
  • PMP-principle-based dual-state adaptive control method of plug-in hybrid power system
  • PMP-principle-based dual-state adaptive control method of plug-in hybrid power system

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Embodiment Construction

[0084] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0085] A kind of plug-in hybrid system dual-state self-adaptive control method based on PMP principle (Pondriakin minimum value principle) of the present invention, refer to figure 1 , the method specifically includes the following steps:

[0086] S1: According to the data recorded by the vehicle GPS system and the actual operation scene of the vehicle, construct a comprehensive working condition including speed and road gradient. Specifically include:

[0087] S11: Set the sampling frequency of the vehicle-mounted GPS to 1 Hz, and record information such as vehicle speed, longitude, latitude, and altitude;

[0088] S12: Processing of abnormal vehicle speed data: make the maximum acceleration greater than 5m / s 2 As abnormal acceleration data, the maximum deceleration is greater than 8m / s 2 It is regarded as abnormal deceleration data, a...

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Abstract

The invention relates to a PMP-principle-based dual-state adaptive control method of a plug-in hybrid power system. The PMP-principle-based dual-state adaptive control method mainly includes the following steps that S1, according to the data recorded by a vehicle-mounted GPS system and an actual operation scenario of a vehicle, a comprehensive working condition including the speed and a road slopeis constructed; S2, according to parameters of the whole vehicle, power parts and transmission parts, a longitudinal vehicle dynamics model and a control-oriented engine, motor and battery circuit model are established; S3, a battery capacity attenuation model considering calendar aging is constructed; S4, a pontryagin minimum principle is used for determining a reasonable compromise proposal between battery aging and energy consumption offline; S5, based on the pontryagin minimum principle, an adaptive control strategy is developed; S6, reference trajectories of battery states of charge andbattery aging states are planned; and S7, the dual-state adaptive control method is tested and corrected. According to the PMP-principle-based dual-state adaptive control method, a new idea is provided for the multi-objective adaptive control of the plug-in hybrid power system, so that the comprehensive operation cost of the vehicle is minimized.

Description

technical field [0001] The invention belongs to the field of new energy vehicles and relates to a two-state self-adaptive control method for a plug-in hybrid power system based on the PMP principle. Background technique [0002] Cars are already an indispensable tool for people to travel. With the increase in the number of cars, it has brought greater pressure on the energy that was originally in short supply. Automobile emissions have become the largest source of pollution in various countries. CO and NO emitted from automobiles x And some particulate emissions have had a very bad impact on the environment on which people live. Under the dual pressure of energy crisis and environmental pollution, research on new energy vehicles has become an urgent task at present. [0003] Plug-in hybrid electric vehicle (PHEV) can combine the advantages of hybrid electric vehicle and pure electric vehicle, and has become the most popular new energy vehicle product at present, but the ex...

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Application Information

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IPC IPC(8): B60W20/11B60W20/15
CPCB60W20/11B60W20/15B60W2510/244B60W2510/248
Inventor 胡晓松张硕唐小林杨亚联谢翌
Owner CHONGQING UNIV
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