TBD Next presentation dates are: The two most interesting operating systems that we worked on was Linux and seL4. Because of the vulnerability of the wireless signal, IWSNs are under high risk of transmission failures, which may result in missing or delaying of process or control data. Although industrial automation systems are usually designed to be tolerant of certain communication errors, successive transmission failures may still cause the downtime of industrial applications, which might lead to significant economic losses or even serious accidents. May 26, – August 25, – September 22, –
September 17, – The complete website is currently down and we are working on to relaunch it as soon as possible. To begin with, we have proposed a systematic design process to support component-based development. However, the complexity of RTES has been ever increasing requiring systematic development methods. June 10 and June 11, Spring Period 1 End date:
An alternative method is to use Forward Error Correction FEC mechanism to provide more reliable transmissions and re- duce the number of acknowledgement messages by recovering erroneous data. The correctness aspect includes strategies on how to verify hierarchical schedulers, but also how to minimize the scheduler overhead and achieve as good run-time performance as possible.
Existing solutions are either hardly able to fulfill all stringent requirements from the mission-critical industrial applications, or overcomplicated to be realized or lack verification in reality.
January 20, Status and planning report submission date: May 27, thesiss TBD Opponentship sign-up date: June 10 and June 11, To be authorized to present your work, you must have submitted the final version of your thesis report according to the procedure described in the Study Guide under ‘Submitting the report for examination’.
June 3, – Hence, this work elaborates on how to adapt and extend the operating-system task-scheduler to support hierarchical scheduling. Guaranteeing correctness implies a potential loss of performance due to the added overhead that the verified software can bring.
To begin with, we have mch a systematic design process to support component-based development. June 10 and June 11, Spring Period 1 End date: Conclusively, there are many challenges when it comes to scheduler synthesis.
These systems are characterized by stringent functional requirements and predictable timing behaviour. The two most interesting operating systems that we worked on was Linux and seL4. ift
Thhesis, the complexity of RTES has been ever increasing requiring systematic development methods. Traditional routing protocols in IWSNs are either hardly able to fulfill both of these requirements or overcomplicated.
On network layer, routing protocol plays an important role in both communi- cation reliability and latency. We have focused on both independent and semi-dependent subsystems.
These two operating systems represent two extremes, where Linux is more focused towards soft real-time systems and seL4 towards pure hard real-time safety-critical systems. To address these concerns, model-based frameworks and component-based design methodologies have emerged as a feasible solution. October 25, – Because of the vulnerability of the wireless signal, IWSNs are under high risk of transmission failures, which may result in missing or delaying of process or control data.
Although there are a number of advantages of replacing cables with wireless links, such as cost reduction, enhanced scalability and flexibility, the stringent requirements on communication reliability and meeting firm deadline from industrial mission-critical applications should still be fulfilled.
For example, the avionics-specification ARINC and the safety-critical operating systems seL4 and PikeOS safely divide resources for independent safety-critical applications by using hierarchical scheduling. June 9, – Linux-based systems have in general less strict demands on correctness and more requirements on usability. September 22, – However, there remains several challenges to be addressed, such as, expressiveness, to represent the real-time and causality behaviour, and analyzability, to support verification of functional and timing behaviour during early-phases of system development.
School of Innovation, Design and Engineering. June 2, – Links to available thesis suggestions For now, you can find thesis suggestions at the following urls http: April 22, Report submission date: To be authorized to present your work, you must have submitted the final version of your thesis report according to the procedure described in the Study Guide under ‘Submitting the report for examination’.
School of Innovation, Design and Idh.
February 2, Re-examination period 1: This thesis addresses the problems mentioned above and aims to provide reliable and deadline-constrained communication via IWSANs for iidt automation systems.