Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Multibody modeling and optimization of a dynamic vehicle suspension system
Submission Author:
Jefferson Gomes de Carvalho Souza , RJ
Co-Authors:
Jefferson Gomes de Carvalho Souza, Elias Dias Rossi Lopes, Gustavo Simão Rodrigues, Taís Gomes de Carvalho Souza
Presenter: Jefferson Gomes de Carvalho Souza
doi://10.26678/ABCM.COBEM2021.COB2021-0144
Abstract
The vehicle suspension system performs a fundamental role for the driveability, comfort and proper application of different vehicles, being responsible for reducing the vibrations induced by ground irregularities, increasing the life cycle of vehicle components and reducing possible damage to the road. In this context, the purpose of this paper is to study and analyze the dynamic response in the time domain of an active suspension system model in a state space formulation based on Euler-Lagrange equations. Also, closed-loops control systems are designed and compared in order to optimize the suspension behavior and parameters, based on two different strategies: Poles-placement/Full State Feedback (FSFB) and Linear Quadratic Regulator (LQR). The results for the numerical analysis show that for similar specifications of overshoot and settling time for the dynamic system, the LQR model can reduce the gain matrix K and the control force by consequence, still obtaining better dynamic response and Quadratic Performance Index/Cost Function (J).
Keywords
Active suspension, dynamics, structural optimization, LQR, Controllers
