Abstract
A number of modern technological processes can be significantly intensified by applying vibratory excitation in a wide range of oscillation frequencies and amplitudes. In many cases, an electromagnetic vibration exciter (EMVE) may serve as the most effective source of vibration, especially at power levels up to several kilowatts and more; push-pull EMVEs developing a non-pulsating and sign-variable exciting force are considered to be the most appropriate ones. The excitation of self-oscillations in a system of two electromagnets connected according to a differential scheme, which allows the range of operating frequencies to be widened and the system power capacity to be increased, is analyzed. An equation describing the interaction between the EMVE mechanical vibration subsystem and the power supply system is given. A method for analyzing a dual-circuit self-contained electromechanical system (EMS) taking into account electromechanical links is developed. It is pointed out that during operation in the autonomous mode one stable state ensuring frequency stability is realized.
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