Optimization of vehicle suspension parameters based on ride comfort and stability requirements

Abstract

The use of optimization methods in engineering is growing, allowing the best possible way to fulfill the requirements of the project. For vehicle suspensions, there are various conditions, which involve comfort, safety, stability, maneuverability, among others. A safety and stability evaluation is carried out by several tests, including Double Lane Change. In this maneuver, the vehicle must change lanes quickly twice, allowing it to be assessed for stability in sudden movements. For ride comfort, it is common for the design to be based on the vehicle’s natural vibration frequencies. In this context, this work aims to present a methodology for optimizing the suspension parameters of a vehicle, based on the natural frequencies of vibration and the simulation of a Double Lane Change maneuver. For that, it is employed vertical and lateral dynamics mathematical models, with hypotheses that allow the adequate adaptation to the represented phenomena. Finally, Particle Swarm Optimization (PSO) is used, which is a stochastic algorithm, based on nature. It has low computational cost, with reasonable results, allowing the parameters to be estimated and comprising the two objectives simultaneously.

Relevance analysis of the bushing stiffness of rear multi-link suspension to handling stability and ride comfort of vehicle and optimization research to improve both performances

“…The natural frequency of the system can be obtained by calculating the eigenvalues λ n of the matrix M − 1 K , equation (31) is the expression for the natural frequency of the system 18…”

The determination of the optimum position of bushing in the trailing arm of torsion beam suspension considering the performance of whole vehicle

“…Some scholars have carried out extensive research on the design of suspension to improve the performance of vehicle, and some have adjusted the relevant parameters of existing suspension to improve vehicle performance through optimization. [1][2][3][4] The torsion beam rear suspension has been widely used in passenger vehicle due to its simple structure and low cost. Many scholars have also carried out some research on torsion beam suspensions.…”

“…Some scholars have carried out extensive research on the design of suspension to improve the performance of vehicle, and some have adjusted the relevant parameters of existing suspension to improve vehicle performance through optimization. 1–4…”

Sensitivity analysis and multi-objective optimization of the virtual track train parameters considering the coupling effect between vehicles

“…2,3 The comprehensive performance of the vehicle system, including vehicle stability, passenger comfort and road friendliness, has always been one of the most concerning issues in the optimization of vehicle parameters. [4][5][6] The optimal design of the vehicle system is intended to find effective compromise solutions among complex and contradictory indexes, which can satisfy different performance requirements and optimize the working state of the vehicle system. 7,8 Consequently, scholars have conducted numerous studies on the optimization of parameters and performances of the vehicle system.…”