Vehicle multi-objective coordinated self-adapting cruise control method

Abstract

The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I / O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performance indicators of MTC ACC; 3. the I / O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.

Description

technical field [0001] The invention relates to a vehicle longitudinal dynamics control method, in particular to a vehicle multi-objective coordinated adaptive cruise control method based on model predictive control theory. Background technique [0002] As an important part of the driver assistance system, the Adaptive Cruise Control System (ACC, Adaptive Cruise Control System) has the potential to reduce driver fatigue, improve vehicle driving safety and increase traffic flow, and has been recognized by various research institutions and automobile manufacturers. extensive attention. Most of the existing ACC systems are only designed for tracking performance targets, but with the gradual popularization of ACC systems and the increase in oil prices, in addition to the necessary tracking performance, low fuel consumption has also become an important goal pursued by ACC vehicles. In addition, in order to enhance the driver's trust in the ACC system, the ACC system should confo...

AI Technical Summary

Problems solved by technology

Since the driver's characteristics are non-linear and vary widely from individual to individual, it is difficult for the linear model to accurately reflect the longitudinal driving behavior of human-vehicle coupling under various working conditions. ability

Images