Development and Validation of Functional Model of a Cruise Control System

Abstract

Modern automobiles can be considered as a collection of many subsystems working with each other to realize safe transportation of the occupants. Innovative technologies that make transportation easier are increasingly incorporated into the automobile in the form of functionalities. These new functionalities in turn increase the complexity of the system framework present and traceability is lost or becomes very tricky in the process. This hugely impacts the development phase of an automobile, in which, the safety and reliability of the automobile design should be ensured. Hence, there is a need to ensure operational safety of the vehicles while adding new functionalities to the vehicle. To address this issue, functional models of such systems are created and analysed. The main purpose of developing a functional model is to improve the traceability and reusability of a system which reduces development time and cost. Operational safety of the system is ensured by analysing the system with respect to random and systematic failures and including safety mechanism to prevent such failures. This paper discusses the development and validation of a functional model of a conventional cruise control system in a passenger vehicle based on the ISO 26262 Road Vehicles -Functional Safety standard. A methodology for creating functional architectures and an architecture of a cruise control system developed using the methodology are presented.

Towards an Integrated Approach to Verification and Model-Based Testing in System Engineering

“…[35] uses SysML state machine diagrams in the representation of functional state transitions of the cruise control of a vehicle. As noted by [3], semantics and syntax of statecharts and thus UML/SysML state machines are limited in the modelling of complex systems.…”

“…From a system design point of view, adding new functionality and validating the operational safety of new technology in the legacy system (e.g., motor vehicle or e-Bike) increases development time [35]. Thus validation of additional functionalities of a new technology and its impact across other technologies of an existing system via system behavioural modelling would be time and cost saving for an organization.…”

Modelling and Validating an Engineering Application in Kernel P Systems

“…From a system design point of view, however, adding a new feature brings in new challenges for the operational safety of the new functionality [24]. Thus validation of additional functionalities of any new technology and their impact on other components of an existing system is important.…”

“…A cruise control is an advanced driver-assistance system technology that automatically regulates the speed of a transportation system (such as motor vehicle or electric bicycle) set by the user. From a system design perspective, the validation of the operational safety of any component/feature is very crucial [24].…”