Analysis of measuring the ride and driving safety applied in a vehicle suspension controlled system

Abstract

The article analyzes the measures of ride comfort and vehicle safety. It is shown that when organizing steering, it is necessary to focus not only on the criteria of steering efficiency, but also on the indicators of the vehicle performance. At the same time, it is also important to take into account the driving conditions that impose restrictions on the use of appropriate meters. When evaluating high-speed maneuvering it is advisable to use only certain meters. A list of the most commonly used ride comfort and safety measurements is presented. At the same time the ranking of these meters by “levels” is proposed which is based on the analysis of the used measures of ride comfort and the onboard system requirements for their determination. Such a ranking reflects the degree of perfection and, accordingly, the cost of the controlled suspension system. The presented table can be used when considering consumer properties of a newly developed vehicle. The made analysis of traffic safety meters was carried out for the mode of high-speed maneuvering, which is characterized by its short duration in relation to the total time of the vehicle movement. The analysis of the applied traffic safety meters shows that it is preferable to use the dynamic force in the contact patch as the main meter. It is noted that when creating a cushion control system, there is a contradiction between the provision of indicators of ride comfort and safety. To overcome this contradiction, it is recommended to use the “conflict diagram” method. Similar diagrams are constructed for mathematical models of automobiles to provide a representation of statistical data on the root-mean-square values of the acceleration vector norm and the root-mean-square values of the load on the wheel.