INVESTIGATION OF STARTING REGIMES OF THE ASYNCHRONOUS UNBALANCED VIBRATION ENGINE UNDER THE INFLUENCE OF THE STATIC MOMENT
Background. Asynchronous unbalanced vibrating motors are widely used in practice, but they have a significant drawback - the influence of the magnitude of the static torque on the start-up process, which negatively affects their operation. At the moment of starting, the rotor speed of an asynchronous vibration motor grows unevenly, this is caused by the magnitude of the static moment of the unbalance, which results in the failure of the speed of the asynchronous vibrating motor in the first half-cycle of rotation to a complete stop - the critical regime, with the start time being greatest. Many researchers solved this problem using engines with a significant power reserve (30-70 %), however, the power reserve worsens energy performance (efficiency and power factor in operating mode).The purpose of the study is to analyze and analyze the influence of the magnitude of the static torque on the process of starting the vibrating machine in order to identify a method that will reduce the installed power of an asynchronous vibrating motor, thereby improving the starting process of the vibrating electric drive.Materials and methods. For carrying out of researches any serial with passport characteristics can be applied. In the present work, the initial data for the study used the passport characteristics of the IV-105-2.2 serial vibratory engine and the main parameters of the vibration system. A math-ematical model of the considered vibration system and a vibration motor is developed under the generally accepted assumptions in the software environment of the MVTU 3.7.Results. A method of applying spring-loaded imbalance is proposed, which allows improving the starting properties of a vibrating electric drive and preventing speed dips, as well as the pos-sible «lowing down» of the speed of an asynchronous vibrational motor caused by a significant value of a static motive. The calculated and experimental oscillograms are obtained.Conclusions. The correct application of the mathematical apparatus allows us to state that the results obtained with the serial vibrational motor coincide with the experimental ones. This proves the effectiveness of applying spring-loaded imbalance, which will increase the reliability of vibrating machines and increase the life of the electric drive.