Modelling and control of an electromechanical steering system in full vehicle models

In the automotive industry, electrical and electromechanical components and systems become more and more important. In comparison with commonly used mechanical and hydraulic systems they offer a large number of advantages with respect to efficiency and flexibility, for example. Therefore, conventional hydraulic steering systems are increasingly being replaced with electromechanical ones. Currently, different concepts of electromechanical steering systems are being developed. In this work an electromechanical steering system with double pinions is modelled based on a uniform theory for discrete electromechanical systems. This steering system is implemented into a multi-body full vehicle model and a control scheme has been developed. Subsequently, the performance of the whole electromechanical system, and especially the behaviour of the controller, has been tested with different handling manoeuvres.