Vehicle acceleration management method based on MPC control

A management method and acceleration technology, applied in control devices, geometric CAD, special data processing applications, etc., can solve the problem of not considering application scenarios and only considering fuel economy, etc., to achieve real-time optimal control and avoid high fuel consumption.

Pending Publication Date: 2022-03-22
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The management of vehicle acceleration only determines the acceleration limit based on the vehicle speed, only considers fuel economy, and does not consider application scenarios that have strong demand for vehicle power, such as vehicle overtaking

Method used

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  • Vehicle acceleration management method based on MPC control
  • Vehicle acceleration management method based on MPC control
  • Vehicle acceleration management method based on MPC control

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Experimental program
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Effect test

Embodiment 1

[0053] The performance index set by the vehicle acceleration management is a composite performance index, and the acceleration limit is set by comprehensively considering power and economy. The dynamic design of the vehicle is such that the acceleration can reach the required value as soon as possible under the constraint conditions, so as to meet the power demand of the vehicle when going uphill and overtaking. Vehicle fuel economy is designed to minimize fuel consumption during the control process.

[0054]

[0055] In the formula, J is the acceleration compound performance index, t 0 is the initial moment of the control time domain, t f is the final moment of the control time domain, a is the actual acceleration value in the control process, a req In order to control the demand value of the acceleration in the process, the dynamic performance of the vehicle is expressed as the hope (a-a req ) 2 The minimum means that the acceleration can reach the required value as s...

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Abstract

The invention discloses a vehicle acceleration management method based on MPC control. The method comprises the following steps: setting a final value type and integral type combined acceleration composite performance index; analyzing dynamic characteristics of the engine control system and establishing a state equation; establishing constraint conditions of performance indexes of the engine control system; actual parameters of the vehicle are collected, the optimal solution of the engine torque in the control time domain is determined through a numerical optimization method on the basis of the acceleration composite performance indexes, the state equation, the constraint conditions and the actual parameters, and the optimal solution is applied to an engine control system for acceleration control; and continuously rolling the prediction time domain forwards for one step length, and repeating the steps to realize real-time control of the acceleration. According to the method, optimization control and the rolling time domain are combined, optimization solution is carried out through the continuous rolling time domain, continuous adaptation to state quantity changes can be achieved, sudden changes can be handled in time, and therefore real-time optimization control is achieved.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a vehicle acceleration management method based on MPC control. Background technique [0002] Chinese invention patent application "a vehicle parameter calibration device and method" (application number: CN201610086216.3) discloses a vehicle parameter calibration device and method, the device includes: a receiving unit, receiving vehicle parameters and acceleration limit thresholds and related The speed value corresponding to the acceleration limit threshold; the VAM characteristic control unit, which controls the opening and closing of the VAM characteristic; the simulation calculation unit, which simulates the acceleration time and acceleration fuel consumption according to the vehicle parameters when the VAM characteristic is turned on; The unit is used to determine the VAM characteristic calibration parameters according to the acceleration time and acceleration...

Claims

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Application Information

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IPC IPC(8): B60W50/00B60W40/107B60W10/06G06F30/15G06F30/20
CPCB60W50/00B60W40/107B60W10/06G06F30/15G06F30/20B60W2050/0039
Inventor 董定欢郭祥靖刘勇余建华刘双平周杰敏关孟樵谭宪琦陈曼蒋江楚
Owner DONGFENG COMML VEHICLE CO LTD
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