Evolutionäres Domain-Engineering zur Entwicklung von Automatisierungssystemen

Software reuse in modern industrial automation systems is gaining in importance. Small and medium-sized companies (SMC) in particular, see reuse as a possibility to lower costs and shorten time-to-market. The market lacks existing reusable software which is applicable for industrial automation systems. Therefore, companies are forced to develop reusable software on their own. The currently available Domain Engineering Methods to support the development of software for reuse are tailored for general software systems and optimized for the usage in large companies. SMCs developing software for industrial automation systems will need Domain Engineering Methods that fit their financial and personnel requirements and consider the specific features of industrial automation systems. In this thesis a concept for the iterative development of software components and a domainspecific software architecture will be introduced. It is based on the principle of evolution. The concept enables the temporal distribution of the development via iterative development. Within the single steps of iteration the software components will be developed separately. Therefore, the concept supports the early decomposition of the domain into sub-domains, from which software components will result. Further, the integration of these software components to a domain-specific software architecture is supported. The concept for the development of software components is modeled on domain engineering methods that consider common and variable features of legacy software. Software for industrial automation systems is mainly influenced by automation tasks and facilities necessary for automation. This leads to special properties, such as real-time constraints and access on computer hardware and peripheral hardware. To include the relevant commonalities and variabilites of software for industrial automation these special properties need to be considered during domain engineering. Therefore, domain engineering is extended by a catalogue of questions which support the analysis of the automation task and the facilities used for automation. The concept is used in a methodology that supports the customer with defined activities and products during the evolutionary development of reusable software. The conceived methodology leads to a temporal distribution of the development effort and to an early usage of partial results. Therefore, the basic pre-condition for the usage of the methodology for SMC is fulfilled. In addition, the methodology considers automation tasks and facilities used for automation especially during analysis. This enables the consideration of information which is relevant for software for industrial automation during the development of reusable software for industrial automation.