scholarly journals Analysis of Bouncing Vibration and Complete Contact Condition of a Single-Degree-of-Freedom Contact Slider Model for Contact Recording.

1996 ◽  
Vol 62 (601) ◽  
pp. 3387-3393 ◽  
Author(s):  
Kyosuke ONO ◽  
Kan TAKAHASHI ◽  
Hiroshi YAMAURA
Keyword(s):  
Contact Condition ◽  
Degree Of Freedom ◽  
Single Degree Of Freedom ◽  
Single Degree ◽  
Complete Contact ◽  
Contact Recording ◽  
Contact Slider

Computer Analysis of the Dynamic Contact Behavior and Tracking Characteristics of a Single-Degree-of-Freedom Slider Model for a Contact Recording Head

1995 ◽  
Vol 117 (1) ◽  
pp. 124-129 ◽  
Author(s):  
Kyosuke Ono ◽  
Hiroshi Yamamura ◽  
Takaaki Mizokoshi
Keyword(s):  
Contact Stiffness ◽  
Time History ◽  
Dynamic Contact ◽  
Disk Surface ◽  
Degree Of Freedom ◽  
Design Parameters ◽  
Single Degree Of Freedom ◽  
Contact Behavior ◽  
Single Degree ◽  
Contact Slider

This paper presents a new theoretical approach to the dynamic contact behavior and tracking characteristics of a contact slider that is one of the candidates of head design for future high density magnetic recording disk storages. A slider and its suspension are modeled as a single-degree-of-freedom vibration system. The disk surface is assumed to have a harmonic wavy roughness with linear contact stiffness and damping. From the computer simulation of the time history of the slider motion after dropping from the initial height of 10 nm, it is found that the contact vibration of the slider can attenuate and finally track on the wavy disk surface in a low waviness frequency range. As the waviness frequency increases, however, the slider cannot stay on the disk surface and comes to exhibit a variety of contact vibrations, such as sub- and super-harmonic resonance responses and finally comes to exhibit non-periodic vibration. It is also found that, among design parameters, the slider load to mass ratio and contact damping can greatly increase the surface waviness frequency and amplitude for which the stable tracking of a contact slider is possible.

Statistical Analysis of Perfect Contact and Wear Durability Conditions of a Single-Degree-of-Freedom Contact Slider

1999 ◽  
Vol 122 (1) ◽  
pp. 238-245 ◽  
Author(s):  
Kyosuke Ono ◽  
Kohei Iida
Keyword(s):  
Interface Design ◽  
Degree Of Freedom ◽  
Necessary Condition ◽  
Surface Waviness ◽  
Single Degree Of Freedom ◽  
Disk Interface ◽  
Single Degree ◽  
Spacing Variation ◽  
Perfect Contact ◽  
Contact Slider

In this paper, the design condition of a single-degree-of-freedom (1DOF) contact slider over a random wavy surface of a disk is analyzed statistically. It is numerically confirmed that when the slider is in contact with a disk, spacing variation histograms are close to Gaussian even if surface waviness histogram is not close to Gaussian. The design condition of the slider and the surface waviness necessary for perfect contact sliding is derived from 3σs<δ, where σs and δ are the standard deviation of spacing variation and the static penetrating depth, respectively, and it is verified both numerically and experimentally. The necessary condition for wear durability under uniform contact pad pressure is also derived. An example of the slider-to-disk interface design which satisfies both perfect contact sliding and wear durability is shown. In order to evaluate σs adequately, frequency response of slider must be integrated over the range from fr/2 to 2 fr where fr is the contact resonance frequency. It is found that a disk surface should be extremely smooth to satisfy both the perfect contact sliding and wear durability conditions. [S0742-4787(00)03001-0]

Kinematic comparison of single degree-of-freedom robotic gait trainers

2021 ◽  
Vol 159 ◽  
pp. 104258
Author(s):  
Jeonghwan Lee ◽  
Lailu Li ◽  
Sung Yul Shin ◽  
Ashish D. Deshpande ◽  
James Sulzer
Keyword(s):  
Degree Of Freedom ◽  
Single Degree Of Freedom ◽  
Single Degree ◽  
Robotic Gait
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