نتایج جستجو برای: degree of freedom dof

تعداد نتایج: 21171136  

Journal: :Friction 2023

Abstract When the oil supply is not adequate to maintain ideal lubrication, angular contact ball bearing will enter into starved lubrication regime resulting in potential performance degradation and consequently severe failures. To study effects of on bearing, this paper first proposes a multi-degree-of-freedom (DOF) tribo-dynamic model by introducing five-DOF inner ring, six-DOF balls, cage. T...

Journal: :Bulletin of Earthquake Engineering 2023

A distributed remote collaborative hybrid test (RCHT) method for complex substructures based on OpenFresco is presented in this paper. Challenges the RCHT include modeling of numerical substructure, boundary degree-of-freedom (DOF) loading, and equivalent communication multi-story space frame as a substructure OpenFresco. The effectiveness accuracy proposed are verified by series tests that rep...

پایان نامه :0 1375

the following null hypothesis was proposed: there is no significant difference between the efl students listening comprehension development receiving pictorial cues and those receiving no cuse. to test the null hypothesis, 52 male and femal freshmen students of medicine studing at iran university of medical scinces were randomly selected from a total population of 72 students. to ensure that th...

Journal: :Mechanics & Industry 2022

A method for parameter identification of the magnetorheological damper (MRD) model with an improved firefly algorithm (IFA) is proposed, and a semi-active seat control system three-degree-of-freedom (3-DOF) established by combining quarter car to investigate ride comfort. The dynamic characteristics MRD were analyzed experimental method. Combined IFA, parameters phenomenon identified, forward M...

2007
Zong-Ming Li

INTRODUCTION In classic mechanics, degrees of freedom (DOF) are defined as the minimum number of independent coordinates needed to describe a system’s position. The human musculoskeletal system has many mechanical DOF through which countless movements are accomplished. However, natural movements are characterized by the coordination of the DOF such that few vary independently. The concept of fu...

2011
NICHOLAS DAVID THAYER Daniel J. Inman David Thayer

Medical mannequins provide the first hands-on training for nurses and doctors and help eliminate human mistakes that would otherwise take place with a real person. The closer the mannequin is to mimicking a human being, the more effective the training; thus, additional features such as movable limbs and eyes, vision processing and realistic social interaction will provide a more fulfilling lear...

Journal: :Energies 2021

The torque mode is more suitable for the direct drive 6 degree of freedom (6-DOF) parallel mechanism than speed that both dynamic coupling and current among motors are easily solved, but its key parameters characteristics have never been studied, which important goals this paper. First hydraulic system 6-DOF simplified. Then transfer function with deduced together mode. Finally, comparative exp...

Journal: :Quantum science and technology 2021

Abstract Quantum gates are essential for the realization of quantum computer and have been implemented in various types two-level systems. However, high-dimensional rarely investigated both theoretically experimentally even that systems exhibit remarkable advantages over some information computing tasks. Here we demonstrate four-dimensional X gate its unique higher orders with average conversio...

Journal: :Robotics 2021

This paper presents the design, modeling, analysis, and experimental results of a novel bipedal robotic system that utilizes two interconnected single degree-of-freedom (DOF) leg mechanisms to produce stable forward locomotion steering. The DOF is actuated via Reuleaux triangle cam-follower mechanism constant body height foot trajectory. Kinematic analysis dimension selection conducted first ge...

Journal: :Journal of robotics & autonomous systems 2021

A robotic manipulator operating within a confined space ideally positions its end-effector with minimal spatial displacement of each link. Achieving certain poses can require large overall the hardware. This work inves- tigates effect an additional degree freedom (DOF) at KUKA LBR iiwa14 arm by assessing occupied during 6 manipulation tasks and dexterity workspace.

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