An introduction to formal languages and automata solution manual pdf

A combined methodology for the formal verification of autonomous automotive platooning is proposed. A model of the an introduction to formal languages and automata solution manual pdf code is extracted and used for the verification of real-time properties for the system. The coordination of multiple autonomous vehicles into convoys or platoons is expected on our highways in the near future.

However, before such platoons can be deployed, the behaviours of the vehicles in these platoons must be certified. In this paper, we show how formal verification can contribute to the analysis of these new, and increasingly autonomous, systems. In order to ensure that these autonomous decision-making agents in vehicle platoons never violate safety requirements, we use formal verification. However, as the formal verification technique used to verify the individual agent’s code does not scale to the full system, and as the global system verification technique does not capture the essential verification of autonomous behaviour, we use a combination of the two approaches. This mixed strategy allows us to verify safety requirements not only of a model of the system, but of the actual agent code used to program the autonomous vehicles. PLC systems are reactive systems which run cyclically.

In each cycle, the system state is checked and the program is executed once to determine the system behavior for a single cycle. Development of PLC systems conventionally follows the V-model, but increasing demand for efficiency and reliability requires a new rigorous and rapid design flow. In this paper, we propose a component-based formal modeling and synthesis method for cyclic execution platforms and apply it to PLC. Our method consists of three main phases: modeling, verification and code synthesis.

Real-time behavior, which is intensely concerned in PLC systems, can be modeled as well. Verification helps to ensure correctness of the model and further increases reliability of the implementation. In the code synthesis phase, the software part of the system model is extracted and synthesized to cyclic code. Although the PLC software runs cyclically, the software model is not necessarily given in a cyclic manner. We propose an algorithm which can generate high-performance cyclic code from a model which describes the business work-flow. This feature significantly simplifies program development. A set of tools is implemented to support our design flow and they are applied to an industrial case study for a PLC system that controls dozens of physical devices in a huge palace.

Check if you have access through your login credentials or your institution. Department of Computer Science and Technology at Tsinghua University. Department of Mathematical Science in 2007 also at Tsinghua University. His research interests include formal methods and code generation. Tsinghua University, China, in 2011. From 2013, he is an assistant professor in the School of Software at Tsinghua University, China.