Application of experimental planning methods for the analytical description of marine electromechanical systems

The study examines the possibility of applying electrical circuit analysis methods to the mathematical description of marine mechanical systems. It is shown that marine mechanical systems constitute key components of marine power plants and electric drive systems and are characterized by significant structural diversity and complexity due to the presence of elastic bonds and vibration damping. It is demonstrated that the computational schemes of mechanical systems can be represented in the form of chain operator circuits that are structurally analogous to electrical circuits and consist of mechanical impedances and admittances. Equations describing the dynamics of mechanical systems in terms of these impedances and admittances are derived. In such circuit representations, angular velocities of rotating masses play the role of currents, while torques acting in elastic bonds correspond to voltages. It is established that representing mechanical systems as chain mechanical circuits enables the use of calculation methods well known from electrical circuit theory for their mathematical description. Loop and nodal equations of mechanical systems are obtained and analyzed using the example of a three-mass mechanical system. The possibility of applying the equivalent generator method to derive analytical relationships for an arbitrary rotating mass and an elastic bond is considered. Examples of the application of this method to two-mass and three-mass mechanical systems are presented. It is noted that the twomass mechanical system is a widely used model in the analysis of mechanical system dynamics, and various forms of its mathematical representation that are of practical importance are obtained. The frequency-domain analysis of a twomass mechanical system based on the derived mathematical description is also discussed.