Dynamics and Control of Machines

Асташев, В. К.; Babitsky, Vladimir; Kolovsky, M. Z.; Nielsen, Søren R.K.

doi:10.1115/1.1691075

Cited by 12 publications

(15 citation statements)

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“…This can be explained because of the balance between the elastic and inertia forces in resonant vibration systems. In this case, vibration excitation energy is expended only to overcome an active load of the operating process and dissipative forces leading to the actuation energy being used in the most effective way [13].…”

Section: Methods Of Vibration Controlmentioning

confidence: 99%

“…Amplitude-frequency characteristics of systems with hard (a) and soft (b) nonlinearity. Reproduced from [13].…”

Section: Nonlinear Properties Of Ultrasonic Vibrating Systemsmentioning

confidence: 99%

“…The concept was fIrstly applied by the authors together with M. Hertz for control of an ultrasonic transducer [11] and found later new applications in vibration engineering [9,12]. The autoresonant control method is applicable to all types of ultrasonic processes and machines; it employs the phase control principle and can successfully overcome the frequency control drawbacks [11,[13][14].…”

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confidence: 99%

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Modelling of autoresonant control of ultrasonic transducer for machining applications

Voronina

Babitsky

Meadows

2008

Proceedings of the Institution of Mechanical Engineers, Part C:

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A computer model of a non-linear ultrasonic vibrating system with the possibility of autoresonant control is presented in this paper. The system controlled consists of two modules, the first of which is an electromechanical model of an ultrasonic transducer comprising a piezoelectric transducer and a step concentrator. The second module simulates an influence from the machining process. Coefficients of the electromechanical model and its validity were estimated through an identification process based on the experiments with a real ultrasonic transducer. Further, a numerical model of the autoresonant control of this system has been developed. The autoresonant control maintains the resonant regime of oscillation by means of positive feedback, which provides transformation and amplification of the control signal. The model allows the use and comparison of three control strategies depending on the different electrical and mechanical feedback control signals. The results from simulation and from real machining experiments under different control strategies are compared and discussed.

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Section: Methods Of Vibration Controlmentioning

confidence: 99%

“…Amplitude-frequency characteristics of systems with hard (a) and soft (b) nonlinearity. Reproduced from [13].…”

Section: Nonlinear Properties Of Ultrasonic Vibrating Systemsmentioning

confidence: 99%

mentioning

confidence: 99%

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Modelling of autoresonant control of ultrasonic transducer for machining applications

Voronina

Babitsky

Meadows

2008

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Обсуждаются вопросы разработки эффективных схем построения необходимых моделей систем и процессов. Ультразвуковые технологические машины относятся к общему классу вибрационных машин [1,2], а также, разумеется, являются машинами виброударного действия, однако выделяются в отдельную группу по следующим основным причинам. Первая определяется выявленными многочисленными экспериментами принципиальными особенностями поведения материалов и сред в ультразвуковом поле.…”

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To the Analysis of Models of Efficient Ultrasonic Technology Machines

Асташев¹,

Krupenin²

2018

BSTD

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“…In many cases it is possible to allow significant dynamic errors in systems by introducing the necessary adjustment units during design. This is particularly obvious for cyclic machines working under steady state conditions; in such machines dynamic errors in the equations of motion of the working components can be compensated by adjustment mechanisms within defined limits (Astashev, Babitsky, and Kolovsky, 2000). The general tasks of dynamic synthesis have been set by various criteria: the minimization of reactions in the bearings, minimum deviation of the angular acceleration of the driving link, etc.…”

Section: Introductionmentioning

confidence: 99%

Dynamic synthesis of machine with slider-crank mechanism

Jomartov¹,

Joldasbekov²,

Drakunov

2015

Mech. Sci.

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Abstract. In this paper we consider the formulation and solution of the task of a dynamic synthesis machine with an asynchronous electric motor and a slider-crank mechanism. The constant parameters of the slider-crank mechanism (mass and moments of inertia and centers of gravity of links) and the parameters of the electrical motor are defined. The laws of motion of the machine and kinematic parameters of the mechanism are considered as given. We have developed the method of optimal dynamic synthesis of the machine, which consists of an asynchronous electric motor and a slider-crank mechanism. The criterion of optimization of the dynamic synthesis of a machine is the root mean square sum of the moments of driving forces, the forces of resistance and inertia forces which are reduced to the axis of rotation of the crank. The method of optimal dynamic synthesis of a machine can be used in the design of new and the improvement of known mechanisms and machines.

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Dynamics and Control of Machines

Cited by 12 publications

References 0 publications

Modelling of autoresonant control of ultrasonic transducer for machining applications

Modelling of autoresonant control of ultrasonic transducer for machining applications

To the Analysis of Models of Efficient Ultrasonic Technology Machines

Dynamic synthesis of machine with slider-crank mechanism

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