Generolo Jono Žemaičio Lietuvos karo akademija

An important strategic goal of the infrastructure development in the Czech Republic is the use of modern detection, diagnostic, information, control and security technologies based on intelligent transport systems (ITS), global navigation satellite systems and Earth observation systems. The modern transport system is based on a multimodal and intermodal approach. The individual modes of transport are being developed to form a coherent whole from the users’ point of view. Transport infrastructure and vehicles must be in good technical condition and equipped with intelligent technologies. Managing the process of transporting people and goods requires reliable transmission of information in real time. The transport system must also be operated in a secure manner, be prepared for risk and emergencies and have the ability to deal with security threats arising from illegal behaviour. The paper briefly shows the process of building ITS, the possibilities of using modern intelligent information, diagnostic, control and safety technologies in transport until 2027 with a view to 2050.

This article focuses on decision making to select the optimum variant of the product based on the evaluation of the criteria and the analysis of the variants of the product according to the available criteria. The introduction offers an overview of the existing method of multicriteria analysis, including a description of the principles on which the methods are based. The method of analysis was used for the optimal variant of the selection of Unmanned Ground Vehicle selection intended for military and rescue applications. Considering the properties of the described methods, the Saaty method was chosen for the intended analysis of the evaluation of the designed criteria and the determination of the weights of the groups of vehicle parameters. In addition, for the evaluation of available variants of the vehicle, the power function was applied using weights from the Saaty method for each parameter.

Rolling element bearings are fundamental component parts to be used in rotational mechanical system. During the operation, vibration signals are generated and these signals are related to the technical condition of rotating machinery. The aim of this paper is simulated the vibration signal that propagated by rolling element bearings in mechanical gearbox. The gearbox dynamic model that combined gearbox components, such as, shafts, involute gears, rolling element bearings is developed. The localized fault is created on the inner race of bearing. The model is simulated using multi-body dynamics solution, after that results are analyzed in waveform and spectral in order to assess the behavior of gearbox.