Vehicle nonlinear dynamics control strategy fused with data analysis

Abstract

The invention provides a vehicle nonlinear dynamics control strategy fused with data analysis. The vehicle nonlinear dynamics control strategy is suitable for design of the vehicle nonlinear dynamicscontrol strategy. The method comprises the steps of determining a nonlinear dynamics research object, determining independent variable parameters and a value range, generating a data set, operating anonlinear solving algorithm, establishing evaluation indexes of a solution, performing data analysis, and finally determining a nonlinear control strategy according to an analysis result. According tothe data analysis method, a large number of parameter variables including vehicle parameters (including tire parameters), road surface parameters and various control parameters can be considered at the same time; due to the fact that the solving data are collected by the nonlinear algorithm in the control strategy design stage, the problem of solving time does not need to be considered, and multi-parameter control and coupling control of various variables in a complex environment can be achieved under the research method. Meanwhile, the control strategy obtained through research is more suitable for vehicles with different parameters and has high universality when applied to vehicle control.

Description

technical field [0001] The invention relates to the technical field of non-linear control of vehicles, in particular to a non-linear dynamic control strategy of vehicles integrating data analysis. Background technique [0002] The nonlinear control of vehicles has always been a difficult problem in the field of vehicle active safety. The nonlinear dynamic model contains many parameters, and the calculation speed is slow. The research on vehicle linear control strategy at home and abroad has matured. When the tires of the vehicle are in the approximate linear region, the control strategy using the vehicle linear theoretical model has a fast solution speed and high control accuracy. However, when the tires of the vehicle are in the nonlinear critical region, the linear model has a large deviation from the actual motion state. At the same time, the operation delay of the nonlinear model is high, and the real-time performance is poor. At the same time, the coupling control opera...

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Problems solved by technology

[0004] In order to solve the problems of the prior art, the present invention provides a vehicle nonlinear dynamics control strategy that integrates data analysis. The relationship between the control amount and the system stability response is obtained by analyzing the nonlinear solution of a large amount of data. The control strategy determined by the data relationship such as the correlation of the data can make up for the slow response and poor real-time performance of the direct nonlinear control, and provides a new idea for the design of the nonlinear control strategy. The research based on the data of the dynamic model itself is more It can reflect the control law of the system, and there is no need to consider the problem of solving speed in the process of solving the data in the early stage, so a nonlinear solving algorithm with higher precision can be used, and the obtained data can better reflect the internal law after analysis

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