Method for estimation the threshold frequencies of the electrical machines

The paper deals with the vibrations which affect the electrical machines. Due to the widespread use of such machines in the industry, it is of great importance to study and determine their vibrations and threshold frequencies. There are methods by which the the threshold frequencies can be calculated, but they involve heavy computations. A method is proposed and an algorithm with a computer program making it possible to easily determine the threshold frequencies through the geometric parameters of the machine and to predict the operation resource of the electromechanical objects.