Modelling and calculation of autoresonance mechatronic vibration device
2019
Krupenin, V., Russian Academy of Sciences, Moscow (Russian Federation). Mechanical Engineering Research Inst.
The paper deals with the problems of modelling vibration and vibro-impact autoresonant machines. Among the modern vibro-impact machines and devices operating in agricultural and industrial production, in construction and mining industry, a special place is occupied by autoresonance systems. These machines are the most productive and energy efficient. The principle of autoresonance lies in the fact that the designed technical objects work by realizing the resonant movements of the working bodies under the action of forces generated by the movement itself. Modelling such devices is often associated with the use of modern nonlinear mechanics, which in many cases uses various modifications of the energy balance principle. Since vibratory machines and devices in most cases implement periodic modes, this principle is reduced to fulfilment of the condition of balance of work of the forces of external energy sources and dissipation forces during the period of motion. The methods and capabilities of modern mechatronics allow the creation of autoresonance systems that allow balancing of the work of the forces and also even the forces themselves. To do this, you need to use special electromechanical devices that allow you to create the necessary compensating feedback. The present paper briefly describes the theory of such systems and then considers an example of calculating a device that allows to reproduce the necessary periodic impacts. We consider the device dynamic models with arbitrary dynamic compliance operators. Analysis is made of the organization of autoresonance technological machines of vibroimpact action, based on the creation of a feedback circuit, including the measurement of impulses of the working organ, which is the determining parameter of motion in the corresponding conservative model of the technological process. Examples and calculation formulas are given. It is indicated that similar principles of organization of machines can be constructed in the measurement of other determining parameters of motion.
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