Performance measurement of vehicle Crash Imminent Braking systems

Abstract

As active safety systems have been introduced to passenger vehicles, there is an immediate need to develop a standardized testing protocol and scoring mechanism which enables an objective comparison between the performance of active safety systems implemented across various vehicle platforms. This project proposes a methodology for the establishment of such standards to evaluate and compare the performance of Crash Imminent Braking (CIB) systems. The proposed scoring mechanism is implemented based on track testing data in the evaluation of a 2011 model year passenger vehicle equipped with a CIB system.

A new braking and warning scoring system for vehicle forward collision imminent braking systems

“…We have proposed a performance evaluation method for CIB braking in [15]. In this paper, we are trying to enhance that method by including the performance evaluation of the CIB warning and hence provide a performance evaluation method for the entire CIB system.…”

“…In our previous study [15], we proposed to use percentage kinetic energy reduction (%KER, to be explained in Section 3) to measure the effectiveness of CIB braking. Since our goal is to create a total CIB system performance score, we will map the CIB advanced warning time to %KER score so that we can combine CIB warning score with the CIB braking score which is also in the unit of %KER.…”

“…A formulation of CIB braking performance score, Sb, was proposed in [15] where the percentage kinetic energy reduction is used as the measure of Sb' The scoring method is summarized as follows and will be used throughout the paper. We define the performance score of instance k of CIB braking activation tests as Sb-a-k and that of instance h of non-activation test as Sb-na-h.…”

“…However, if we consider that the goals of both CIB warning and braking are to reduce the kinetic energy of a potential collision, there can be a common measure for their performance. In our previous study [15], we proposed to use percentage kinetic energy reduction (%KER) to measure the effectiveness of CIB braking. This paper presents a method to augment the performance score calculation in [15] by adding the CIB warning component.…”

“…In our previous study [15], we proposed to use percentage kinetic energy reduction (%KER) to measure the effectiveness of CIB braking. This paper presents a method to augment the performance score calculation in [15] by adding the CIB warning component. The contribution of this paper is to use the %KER as a performance measure for CIB warning also, which enables us to 1 generate a total CIB system scoring system which includes both CIB warning and CIB braking.…”