Schurygin O. Models and methods to ensure reliability of airborne information handling systems using version-time redundancy

The object of research is processes of reserved onboard information processing systems (IPS) development and functioning. The purpose of research is increasing the reliability of onboard IPS by means of complex using the structural, version and time redundancy. The basic methods of research are system analysis methods, theoretical-plural and automatic description of IPS, probability theory and mathematical statistics, basic statements of reliability theory and technical diagnostics as well as methods of expert estimations. Scientific significance of results is determined by that they develop methods of the analysis, assessment and ensuring of flying devices and other critical objects IPS reliability applying different redundancy kinds. Practical significance consists in that basic dissertation statements are realized as models of IPS multichannel structures failures, engineering methods, algorithms of assessment and reliability assurance, which are the toolkit of decision-making support applied information technology at requirements, analysis and variants choice justification of trusted onboard IPS creation. For the first time have been received the failure models of IPS multichannel structures with version-time redundancy which differ from known subjects that they take into account the influence of hardware and software multiple and paired defects on working capacity and allow to calculate the parameters of control, diagnosing, failure-resistance. The method of IPS reserving using structural and version-time redundancy, regarding input information forming procedures on the basis of results from different soft-hardware channels versions at one and double calculation that ensures raise of systems durability to hardware and software refusals and failures has been improved. The further development has been received the evaluation method and choice of multichannel structures with version-time redundancy at the expense of metrics initiating which take into account different types of soft-hardware defects and priority rows formation procedures that allows to increase accuracy assessment and to automate decision-making processes relative to choice of IPS failure-resistant structures alternatives. Introduction – branch. Further use of the results received in the dissertation is recommended in the research, design and industrial organizations which take part in carrying out the projects on methods improvement of IPS failure-safe structures with the combined redundancy development and choice.