System quality & reliability

The terms quality and reliability (dependability) are used in relation to the correct functioning and overall system behaviour. Quality means that a system is ‘fits for purpose’, thereby meeting the explicit and implicit requirements that are set for its operational deployment. Reliability is the likelihood that a system will perform as agreed and will do so during its operational life.

Design for system quality and reliability focuses on deployment of architectural principles, rules and patterns that focus on prevention of design flaws and ensure robust system operation. These multidisciplinary approaches must address the entire innovation lifecycle, i.e. requirements, specification, design, system integration and test, as well as the system’s operational deployment.

The TNO-ESI research in system quality & reliability focuses, among others, on methods and techniques for early system validation and certification, such as model-based methods for integration and test. These incorporate techniques for validation of highly configurable and adaptable systems-of-systems. Such systems are not under control of a single system integrator and are subject to continuous change.