Usefulness of a New Method to Calculate the Center of Gravity Using Force Plates for Trans-Femoral Amputees

The determination of vehicle’s center of gravity position is an important but challenging task for control of advanced vehicles such as automated vehicles, especially under daily usage condition where the system configurations and payload condition may change. To address this problem, a new method is proposed in this paper to estimate the vehicle’s 3-dimensional center of gravity position parameters without relying on detailed suspension configuration parameters or lateral tire force models. In the estimation problem, the vehicle’s planar dynamic equations are synthesized together to reduce the number of unknown lateral tire forces, then the condition of Ackermann’s Steering Geometry can be found to eliminate the influence of the remaining unknown front wheel lateral tire forces. When the unknown tire forces are cancelled, the recursive least squares (RLS) regression technique is used to identify the 3-dimensional center of gravity position parameters. The vehicle model with the sprung mass modeled as an inverted pendulum is developed to assist the analysis and conversion of sensor measured signals. Simulations conducted in a high-fidelity CarSim® vehicle model have demonstrated the capability of this proposed method in estimating the vehicle’s center of gravity position parameters.

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A new method for inertia tensor and center of gravity identification

Nonlinear Analysis ◽

10.1016/j.na.2005.02.001 ◽

2005 ◽

Vol 63 (5-7) ◽

pp. e1377-e1382 ◽

Cited By ~ 7

Author(s):

Vitaly G. Melnikov

Keyword(s):

Center Of Gravity ◽

Inertia Tensor ◽

New Method

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Tamper Detection in Text Document

Baghdad Science Journal ◽

10.21123/bsj.5.2.313-317 ◽

2008 ◽

Vol 5 (2) ◽

pp. 313-317

Author(s):

Baghdad Science Journal

Keyword(s):

Center Of Gravity ◽

Tamper Detection ◽

New Method ◽

Document Images ◽

Middle Point ◽

Clear Separation ◽

Binary Nature ◽

Letter Word ◽

Text Document ◽

Object Based

Although text document images authentication is difficult due to the binary nature and clear separation between the background and foreground but it is getting higher demand for many applications. Most previous researches in this field depend on insertion watermark in the document, the drawback in these techniques lie in the fact that changing pixel values in a binary document could introduce irregularities that are very visually noticeable. In this paper, a new method is proposed for object-based text document authentication, in which I propose a different approach where a text document is signed by shifting individual words slightly left or right from their original positions to make the center of gravity for each line fall in with the middle point of intended line. Any modification, addition or deletion in a letter, word, or line in the document will be detected.

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A new method for finding the center of gravity of polygons

Journal of Geometry ◽

10.1007/s00022-010-0027-1 ◽

2009 ◽

Vol 96 (1-2) ◽

pp. 81-91 ◽

Cited By ~ 4

Author(s):

Behzad Khorshidi

Keyword(s):

Center Of Gravity ◽

New Method

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From the the center of pressure to the center of gravity, a new algorithm for a step forward in stabilometry

Manual Therapy Posturology & Rehabilitation Journal ◽

10.17784/mtprehabjournal.2015.13.264 ◽

2015 ◽

Vol 13 ◽

pp. 264 ◽

Cited By ~ 1

Author(s):

Bernard Gagey ◽

Olivier Bourdeaux ◽

Pierre-Marie Gagey

Keyword(s):

Differential Equation ◽

Boundary Conditions ◽

Edge Effects ◽

Center Of Pressure ◽

International Committee ◽

Center Of Gravity ◽

The Other ◽

New Method

Introduction: For more than thirty years, in clinical stabilometry, we have been using the center of pressure (CoP) to calculate stabilometric parameters. That was a mistake because the CoP signal comprises two series of information, one on the position of the center of gravity (CoG), and the other on the acceleration of the CoG. Objective: A step forward must be taken in order to separate these variables clearly using the CoG instead of the CoP to calculate stabilometric parameters. A lot of methods have been proposed to obtain the CoG from the CoP, yet none of them is used. We present a new algorithm for the same purpose. Method: A new mathematical way for solving the differential equation of DA Winter is proposed, which can use the "edge effects" due to known boundary conditions of the variables. Result: Solving the Winter's equation has two interests: Clinicians may think about what is observed through a model, and inter-subjects comparisons are better thanks to Winter's coefficient. Conclusion: During its next session, the international Committee for standardization of clinical stabilometry must choose one method to obtain the CoG from the CoP, before this choice is made, this new method must be known, well known and well understood because it could be the best choice.

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Selective Sampling and Orientation of Non-Homogeneous Tissues

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100238 ◽

1968 ◽

Vol 26 ◽

pp. 98-99

Author(s):

C. C. Clawson ◽

L. W. Anderson ◽

R. A. Good

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Light Microscopy ◽

Random Sampling ◽

New Method ◽

Microscope Examination ◽

Small Areas ◽

Selective Sampling ◽

Large Numbers ◽

Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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