Abstract
In this work the experimental researches of dynamics of a model of a chain-type two-mass oscillatory system with two unbalance vibration exciters are carried out. The method of smooth variation of the debalances speed is used to analyze the amplitude-frequency response of the model. The modes of synchronous rotation of debalances are studied depending on the control parameter – the frequency of the supply voltage. The power characteristics of the electric drive and the influence of the carrying body oscillations on the power consumed by the exciter are established. It is shown that the effect of adaptive self-synchronization of debalances occur in the mechanical system, when the oscillation modes of carrying body vary with the excitation frequency.
Highlights
In this paper the oscillations of experimental model of a chain-type two-mass oscillatory system are studied
To reveal main features of the dynamic processes occurring in a two-mass mechanical system with self-synchronizing exciters in a wide range of excitation frequencies, the results of experimental studies of the model's oscillations at different rotational speeds of the debalances are described in the present article
The testing procedure is in determining the amplitude-frequency response of the system from vibration signals measured by accelerometers, estimating power consumption depending on the excitation frequency by the wattmeter, and establishing the relationship between the power supply frequency and the speed of rotation of the debalances
Summary
In this paper the oscillations of experimental model of a chain-type two-mass oscillatory system are studied. To reveal main features of the dynamic processes occurring in a two-mass mechanical system with self-synchronizing exciters in a wide range of excitation frequencies, the results of experimental studies of the model's oscillations at different rotational speeds of the debalances are described in the present article. Control of their speed is provided by changing the frequency of the supply voltage supplied through the inverter to the winding of the asynchronous electric motors with a squirrel-cage rotor
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