Results 71 to 80 of about 539,294 (205)

Research on a Two-Degree-of-Freedom Pneumatic Vibroactuator

Actuators
A two-degree-of-freedom, self-exciting pneumatic vibroactuator was investigated. The feature of this vibroactuator is that, along with the sliding-reciprocating movement of the working body along the axis, it also rotates about this axis.
Laura Gegeckienė, Darius Pauliukaitis, Ingrida Venytė, Kęstutis Vaitasius   +3 more
doaj   +1 more source

Dynamic feedforward control in decoupling space for a four-degree-of-freedom parallel robot

International Journal of Advanced Robotic Systems, 2019
This article proposes a dynamic feedforward control method for a four-degree-of-freedom parallel robot in decoupling space to improve the control accuracy and robust stability.
Xiaogang Song, Yongjie Zhao, Lei Jin, Peng Zhang, Chengwei Chen   +4 more
semanticscholar   +1 more source

Analysis Method and Application of the Degree of Freedom and Mobility of a Kind of Complex Planar Mechanism

Jixie chuandong, 2018
The screw theory is adopted to analyze the constraint of planar mechanisms branch link on mobile platform,the redundant constraint and partial degree of freedom of mechanism is found out,and the formula of degree of freedom is modified,the mobility of ...
Zhang Yan, Sun Qipeng, Deng Aoran, Qiu Lu, Li Gangyan   +4 more
doaj  

A two-degree-of-freedom piezoelectric energy harvester with stoppers for achieving enhanced performance

International Journal of Mechanical Sciences, 2017
Environmental vibrations often exist in a broadband form. To have a robust performance over a wide frequency range, vibration energy harvesters need to be designed to be insensitive to excitation frequencies.
Guobiao Hu, Lihua Tang, R. Das, P. Marzocca   +3 more
semanticscholar   +1 more source

Kink as a new degree of freedom to tune the thermal conductivity of Si nanoribbons

Journal of Applied Physics, 2019
An attractive feature of nanomaterials is the possibility of tuning their properties through controlling their size and surface morphology, and understanding the effects of various parameters on thermal transport properties of nanostructures has been an ...
Lin Yang, Qian Zhang, Zhiyong Wei, Zhiguang Cui, Yang Zhao, T. Xu, Juekuan Yang, Deyu Li   +7 more
semanticscholar   +1 more source

Nonlinear Vibratory Energy Exchanges between a Two-Degree-of-Freedom Pendulum and a Nonlinear Absorber

Journal of engineering mechanics, 2019
The multi-time-scale responses of a two-degree-of-freedom pendulum coupled with a nonlinear absorber were studied.
G. Hurel, A. Ture Savadkoohi, C. Lamarque   +2 more
semanticscholar   +1 more source

Oscillations with one degree of freedom and discontinuous energy

Electronic Journal of Differential Equations, 2015
In 1995 for a linear oscillator, Myshkis imposed a constant impulse to the velocity, each moment the energy reaches a certain level. The main feature of the resulting system is that it defines a nonlinear discontinuous semigroup.
Miguel V. S. Frasson, Marta C. Gadotti, Selma H. J. Nicola, Placido Z. Taboas   +3 more
doaj  

Semiquantum key distribution network protocol with single photons in both polarization and spatial-mode degrees of freedom

Tongxin xuebao
In order to make the communicants at different nodes of network use the semiquantum key distribution technology to constitute a secure semiquantum key distribution network as a whole, a novel semiquantum key distribution network protocol was proposed by ...
YE Tianyu, YE Tengqi, MA Penghui, LI Xia
doaj  

Conversion of Isospin Degree of Freedom into Spin Degree of Freedom [PDF]

Progress of Theoretical Physics, 1978
M. Hosoda, H. Kozakai
openaire   +1 more source

Research of Conceptual Design and Kinematic Characteristic of a 3-PRS Parallel Kinematic Machine

Jixie chuandong, 2019
A conceptual design of a parallel kinematic machine（ PKM） whose topological arrangement is a 3-PRS parallel mechanism is proposed. Based on the screw theory,the degree of freedom（ DOF） of the proposed PKM is analyzed.
Tang Tengfei, Zhang Jun
doaj