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    Synthesis, calculation of functional properties, reliability assessment of planetary transmissions and their diagnostics during operation
    (NTU "KhPI", 2018) Algin, Vladimir Borisovich; Gavrilov, Sergey Alekseevich; Ishin, Nikolai Nikolaevich; Maksimchenko, Natalia Nikolaevna
    Developed models and computer methods cover the stages of synthesis, kinematic, quasi-static and dynamic calculations, prediction and monitoring the dependability of planetary transmissions. Method for constructing no isomorphic structures using canonical matrixes was developed, as well as a modular analytical method for obtaining a family of gearboxes based on a unified reliable core module. Under kinematic and quasi-static calculations, the transmission is represented by a kinematic diagram formed in an automated mode. Its equations are made by means of a structure-distributive matrix. The concept of a regular mechanical system provides a correct dynamic calculation of the transmission as a multibody system with variable states. In calculating transmission dependability, the principle of dependent behaviour of components in a loaded mechanical system is used. Variation in operation conditions is taken into account. The complex logic of limiting states is reproduced in a hierarchical system: constructional elements, parts, units, transmission. Monitoring the transmission dependability in operation is based on diagnostic models that link the vibration level and the degree of components damages. Diagnostic system analyses the vibroimpulses produced by gears. Some presented methods are used in state standards and at enterprises of Belarus.