## 2 Research Methods
of** & \multicolumn{3}{c}{**Vibration Velocity**} & \multicolumn{3}{c}{**Vibration Acceleration**} \\ \cline{2-7}
**Measuring** & **Vertical** & **Horizontal** & **Axial** & **Vertical** & **Horizontal** & **Axial** \\
**Points** & **Direction** & **Direction** & **Direction** & **Direction** & **Direction** & **Direction** \\ \hline  & & & & & & 146 \\  & & & & & 293 & 342 \\  & & & & & 488 & 537 \\  & & & & 146 & 635 & 732 \\  & & & 146 & 342 & 732 & 1221 \\  & 98 & 98 & 342 & 537 & 781 & 1318 \\  & 342 & 293 & 537 & 732 & 977 & 1514 \\
10 (hit) & 537 & 488 & 732 & 1025 & 1172 & 1660 \\  & 732 & 732 & 1221 & 1318 & 1367 & 1807 \\  & 1025 & 928 & 1318 & 1514 & 1611 & 2002 \\  & & & 1660 & 1660 & 1807 & 2393 \\  & & & & 1855 & 2490 & 2637 \\  & & & & & 2637 & 2783 \\  & & & & & 3711 & 3027 \\  & & & & & 391 & \\  & & & & & 879 & 391 & 1074 \\ \(10\) (response) & 391 & 293 & & 1270 & 977 & 1270 \\  & 879 & 977 & 293 & & 1758 & 1270 & 1758 \\  & 1270 & 1270 & & 2441 & 2734 & 2148 \\  & & & & & 2930 & 4004 \\ \hline  & 146 & 146 & 98 & 146 & 146 & 98 \\
11 (hit) & 391 & 391 & 391 & 191 & 439 & 391 \\  & 830 & 830 & 830 & 830 & 830 & 830 \\  & 1270 & 1221 & & 1270 & 1270 & 1270 \\ \hline  & 293 & 195 & 293 & 293 & 195 & 293 \\
11 (response) & 586 & 586 & 586 & 586 & 586 & 586 \\ \hline  & & & & 586 & 195 & 488 \\  & & 195 & 293 & 781 & 586 & 781 \\
12 (hit) & 195 & 586 & 781 & 977 & 781 & 1270 \\  & 488 & 781 & 1270 & 1367 & 1270 & 1563 \\  & & & 1563 & 1660 & 1465 & 1758 \\  & & & & 1953 & 2441 & 2539 \\ \hline  & & & 147 & & & 146 \\
12 (response) & 98 & 146 & 342 & 98 & 293 & 342 \\
12 (response) & 488 & 293 & 488 & 293 & 488 & 488 \\  & 879 & 488 & 781 & 188 & 830 & 781 \\  & & & 1318 & 879 & 1123 & 879 \\  & & & & & 1318 & 1318 \\ \hline  & 195 & 195 & 195 & 195 & 195 & \\
13 (hit) & 391 & 781 & 391 & 391 & 488 & 879 \\  & 879 & 1270 & 879 & 879 & 781 & 1367 \\  & & & & 1270 & 1270 & 1270 \\ \hline  & & & & 293 & 195 & 293 \\
13 (response) & 293 & 195 & 293 & 586 & 481 & 781 \\  & 586 & 781 & 684 & 879 & 1270 & 1270 \\  & 879 & 1270 & 1172 & 1270 & 1465 & 1270 \\  & 1270 & & 1563 & 2246 & 2930 & 2930 \\  & & & & 2441 & 4004 & 2930 \\ \hline  & & & & & 293 & 195 & \\
13 (response) & 293 & 195 & 293 & 586 & 481 & 781 \\  & 586 & 781 & 684 & 879 & 1270 & 1270 \\  & 879 & 1270 & 1172 & 1270 & 1465 & 1465 \\  & 1270 & & 1563 & 2246 & 2930 & 2930 \\  & & & & 2 In addition, the rotation of the turbine and the power measurement system creates a certain dynamic effect in the stand's elements and the stand's measuring system with a certain frequency and amplitude, i.e., a number of frequency harmonics, which lead to the formation of the wave field of the stand when testing the turbine. The algorithm for determining the eigenfrequencies of the stand's elements is based on a mathematical model as a system of discrete masses with elastic-dissipative bonds. A generalization of the design scheme is the introduction of elastic-dissipative bonds between the non-adjacent masses of the chain [27; 28]. Figure 2 shows the stand system in the form of discrete masses with elastic-dissipative bonds. The following values are indicated in Figure 2: \(x_{1}\),..., \(x_{6}\)--directions of the possible movement (3 directions are considered); \(R_{1}\),..., \(R_{6}\)--viscosity forces between bodies; \(G_{1}\),..., \(G_{6}\)--inertia forces of bodies; \(C_{1}\),..., \(C_{6}\)--body stiffness forces; \(\zeta\) (\(t\))--exposure time. To determine the eigenfrequencies of the oscillations of the stand's elements with the turbine, as well as the eigenfrequency of the system itself, it is necessary to obtain matrix