Scientific publications

To assess the practical performance of a system, one needs to consider the system in its operating environment. This report presents an approach for analysing and optimising the performance of High-Mix Low-Volume (HMLV) automated production lines. The approach comprises three methods: (1) a method to specify a production line’s equipment, workload and allocation, (2) a method based on constraint graphs to compute the latency of a specified allocation, and (3) a method based on constraint programming to find the optimal allocation of a production line’s workload on its equipment.

Variability and evolution are key drivers of complexity in high-tech equipment. Every product has many variation points, resulting in a large number of unique system configurations. These systems must be maintained throughout their life-time, which may last several decades. During this time, digital technologies, e.

Performance is a key system level property. Performance, too, is affected by the myriad of decisions and choices in the development and configuration of both hardware and software components. This tutorial focuses on measuring and modeling system performance. We will discuss computer hardware architectures and execution architectures, the sofware design concepts for the dynamic behavior of the system.

This thesis considers extensions of the standard independent hidden Markov model approach previously used by TNO for modelling printer nozzles. These extensions introduce parametrised transition probabilities and incorporate interactions between neighbouring nozzles to better capture the real-world printing process.

Designing the next-generation complex distributed cyber-physical systems (dCPS) poses significant challenges for manufacturing companies, necessitating efficient design space exploration (DSE) techniques to evaluate potential design decisions and their impact on nonfunctional aspects of the systems, such as performance, reliability and energy consumption.

Designing next generation distributed Cyber-Physical Systems (dCPS) requires effective Design Space Exploration (DSE) methods to evaluate system design alternatives and their impact on performance. While existing DSE approaches focus on hardware optimization and software-to-hardware mapping, they often overlook parallel execution opportunities within software tasks.

In this survey we asked the participants how they currently use and experience software rejuvenation tools, and what they expect from these tools in the future. The respondents indicated that they are very familiar with the issues addressed by software rejuvenation, and most of them have used rejuvenation tools themselves.

Het succes van de chipmachines van ASML berust voor een belangrijk deel op de kennis en expertise van laserspecialist Trumpf. Aangemoedigd door ASML maakte het EUV-bedrijfsonderdeel de afgelopen vier jaar een ingrijpende transformatie door, begeleid door TNO Embedded Systems Innovation (TNO ESI) en The LMS Group.