نتایج جستجو برای: Parametric excitation
تعداد نتایج: 123362 فیلتر نتایج به سال:
Parametric excitation in vibratory systems is known well over hundred years. Recently it also being exploited Micro-electromechanical Systems (MEMS). One example of these are micro-ring gyroscopes, which used the automotive, navigation and space industries. The sensitivity such gyroscopes can be impaired by signal noise induced through parasitic capacitance between drive sense electrodes. Apply...
The possibility of suppressing self-excited vibrations of mechanical systems using parametric excitation is discussed. We consider a two-mass system of which the main mass is excited by a ow-induced, self excited force. A single mass which acts as a dynamic absorber is attached to the main mass and, by varying the stiiness between the main mass and the absorber mass, represents a parametric exc...
This paper is devoted to the problem of synchronization of symmetrically coupled self-oscillators exhibiting chaos by means of chaos control technique. We use a nonfeedback method of control, in particular, high frequency periodic modulation of the coefficient of coupling. The model of Chua’s circuits coupled via capacity is considered in this work. We study the possibility of synchronization i...
Machine tool chatter causes an instability that can occur in tool-workpiece-machine system. Hence surface roughness and tool wear in metal cutting processes. This instability caused by interaction between current tool positions and surface left by previous tool passes. Many methods have been developed to minimize the effects of regenerative chatter in machine tools and to enhance the damping ca...
Yuji Harata, Fumihiko Asano, Kouichi Taji and Yoji Uno Robotica / Volume null / Issue 06 / October 2011, pp 831 841 DOI: 10.1017/S026357471100004X, Published online: 10 February 2011 Link to this article: http://journals.cambridge.org/abstract_S026357471100004X How to cite this article: Yuji Harata, Fumihiko Asano, Kouichi Taji and Yoji Uno (2011). Parametric excitationbased inverse bending ...
We investigate localized periodic solutions (breathers) in a lattice of parametrically driven, nonlinear dissipative oscillators. These breathers are demonstrated to be exponentially localized, with two characteristic localization lengths. The crossover between the two lengths is shown to be related to the transition in the phase of the lattice oscillations.
Stability investigations of vibration quenching employing the concept of actuators with a variable stiffness are presented. Systems with an arbitrary number of degrees of freedom with linear springand damping-elements are considered, that are subject to self-excitation as well as parametric stiffness excitation. General conditions for full vibration suppression and conditions of instability are...
A nonlinear dynamic model of the geared rotor system, with consideration of the bearing clearances and gear backlashes, is established. A numerical algorithm based on Runge–Kutta-Butcher method is used to study the nonlinear behaviors of the system accounting for the effects of different excitation frequency. A detailed parametric research is conducted to analyze the influences of the excitatio...
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