OPTIMAL ACTIVE CONTROL OF A 2 DOF QUARTER CAR MODEL WITH NON-LINEAR PASSIVE SUSPENSION ELEMENTS

作者: S NARAYANAN , S SENTHIL

DOI:

关键词:

摘要: Active control of stationary response of a two degree of freedom vehicle model with nonlinear passive suspension elements is considered in this paper. The method of equivalent linearization is used to derive the equivalent linear model and the optimal control laws are obtained by using stochastic optimal control theory based on full state information. Velocity squared damping and hysteresis type of stiffness nonlinearities are considered. The performance of active suspensions with nonlinear passive elements is found to be superior to the corresponding passive suspension systems. As a check on the accuracy of the equivalent linearization technique, Monte Carlo simulation has also been performed. The results are compared with the results obtained from linearized vehicle model and a good agreement between the results has been observed.

参考文章(0)