Annotation:
The questionnaires theory allows solving various problems of discrete search and iden-tification, including its effective application is the automation and control systems technical diagnostics. The questionnaire is a set of events and questions that must be asked for identifying events. Interpreting into technical diagnostics, events are a set of technical object states, ques-tions are a set of checks that allow identifying states. The questionnaires theory can contribute to technical diagnostics and monitoring tools development. Such testing tools will increase the level of automation and control. The authors of the article conduct research on specific types of questionnaires: that contain questions with two outcomes (binary questions) and questions with three outcomes (ternary questions). The research of such a questions combination is important for the constructing of a fixed questionnaire events. This questionnaire will require a smaller number of questions than in a binary questionnaire. At the same time, ternary questions are much more common in practice than questions with a widerange of outcomes. In addition, the use of such questionnaires in practice may have an impact on the average value of the costs for implementation and prove to be more efficient than using only binary questionnaires. This is especially important with restrictions on the average time of event identification. The paper describes the main binary-ternary questionnaires features, describes the dynamic programming method for optimizing this class of questionnaires, and also provides examples of the question-naires implementation in automation and remote control systems in railway transport.
Key words:
detection and identification, discrete search, questionnaire, form, questionnaire optimization, discrete system technical diagnostics