Kinematic Analysis of a Compliant Microplatform

2008 ◽  
Author(s):  
Julio Correa ◽  
Carl Crane ◽  
Huikai Xie
Keyword(s):  
Kinematic Analysis ◽  
Microelectromechanical Systems ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Planar Mechanisms ◽  
Central Platform ◽  
Bimorph Actuators ◽  
Three Dimensional Space

Mechanisms formed by rigid elements are not suitable for applications at the microlevel due to manufacturing limitations. For the same reason, devices for microelectromechanical systems (MEMS) are basically planar mechanisms. This paper addresses a microplatform able to move in the three dimensional space. It is formed by bimorph actuators connected to the central platform by compliant elements. The forward and reverse analyses for the microplatform are presented.

Kinematic Analysis of a Three-Degree of Freedom Compliant Platform

2013 ◽  
Vol 135 (5) ◽  
Author(s):  
Julio C. Correa ◽  
Carl Crane
Keyword(s):  
Kinematic Analysis ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Degree Of Freedom ◽  
Compliant Joints ◽  
Central Platform ◽  
Moving Platform ◽  
Three Degree Of Freedom ◽  
Three Dimensional Space

This paper addresses the kinematic analysis of a three-degree of freedom (DOF) compliant platform able to move in three dimensional space. The device is formed by the actuators, a central moving platform, and compliant joints. The actuators are three binary links. The moving platform is an equilateral plate. Springs connect the free end of each actuator with each vertex of the central platform. In this way, the motion of the actuators is transmitted to the moving platform. Compliant joints increase the complexity of the motion of the central platform and few studies have been carried out. This paper focuses on the forward and reverse analyses for the platform and the derivation of equations that relate the velocity of the moving platform with the velocity of the actuators.

Simplified Manufacturing Through a Metamorphic Process for Compliant Ortho-Planar Mechanisms

2005 ◽  
Author(s):  
Daniel W. Carroll ◽  
Spencer P. Magleby ◽  
Larry L. Howell ◽  
Robert H. Todd ◽  
Craig P. Lusk
Keyword(s):  
Design Process ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Manufacturing Processes ◽  
Two Dimensional ◽  
Planar Mechanisms ◽  
Three Dimensional Space ◽  
Metamorphic Mechanisms

Most simplified manufacturing processes generally result in two-dimensional features. However, most products are three-dimensional. Devices that could be manufactured through simplified manufacturing processes, but function in a three-dimensional space, would be highly desirable — especially if they require little assembly. Compliant ortho-planar metamorphic mechanisms (COPMMS) can be fabricated through simplified manufacturing processes, and then metamorphically transformed into a new configuration where they are no longer bound by the limitations of ortho-planar behavior. The main contributions of this paper are the suggestion of COPMM definitions, an investigation into the morphing process, and the description of a COPMM design process. This work also contributes a case study in designing COPMMs to meet particular design objectives.

Modelling and Kinematic Analysis of a Built Up Linear Delta Robot

2012 ◽  
Vol 186 ◽  
pp. 234-238
Author(s):  
Erol Uyar ◽  
Lutfi Mutlu
Keyword(s):  
Simulation Model ◽  
Kinematic Analysis ◽  
Position Control ◽  
Mechanical Design ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Inverse Kinematic ◽  
Kinematic Parameters ◽  
Dc Motors ◽  
Three Dimensional Space

In this paper kinematic analysis of a 3-PUU translational parallel manipulator (TPM) is made by creating the forward and inverse Kinematic solutions. For a given position, control of the end effecter is then realized by using the calculated inverse kinematic parameters as reference values. For kinematic analysis relevant equations are derived from geometrical vector relations. For the forward and inverse kinematic solutions of the non-linear model a MATLAB based iterative algorithm is developed and the inverse kinematic solutions of limbs, are then used to control the end effecter position through screw rails which are driven by DC motors. After the general mechanical design of the manipulator all parts are drawn and modelled in SolidWorks, and a simulation of the motion in three dimensional space is made. To support the reliability of calculated parameters through inverse kinematic solutions, results are compared with the values of SolidWorks based simulation model of the manipulator. Furthermore a real position control with use of feed back encoders is applied and the evaluated results are compared with the results of a simulation model. Very similar and satisfactory results are obtained with both simulation and real application.

Extension of the Spatial PDI Model to Three Dimensions

1997 ◽  
Vol 84 (1) ◽  
pp. 176-178
Author(s):  
Frank O'Brien
Keyword(s):  
Population Density ◽  
Dimensional Space ◽  
Finite Lattice ◽  
Three Dimensional ◽  
Upper Bounds ◽  
Three Dimensions ◽  
Lower And Upper Bounds ◽  
Density Index ◽  
Three Dimensional Space

The author's population density index ( PDI) model is extended to three-dimensional distributions. A derived formula is presented that allows for the calculation of the lower and upper bounds of density in three-dimensional space for any finite lattice.

A Peptoid with Extended Shape in Water

2019 ◽  
Author(s):  
Jumpei Morimoto ◽  
Yasuhiro Fukuda ◽  
Takumu Watanabe ◽  
Daisuke Kuroda ◽  
Kouhei Tsumoto ◽  
...  
Keyword(s):  
Spectroscopic Analysis ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Biomolecular Recognition ◽  
Biological Application ◽  
New Class ◽  
Proteolytic Resistance ◽  
Pharmacokinetic Properties ◽  
Optically Pure ◽  
Three Dimensional Space

<div> <div> <div> <p>“Peptoids” was proposed, over decades ago, as a term describing analogs of peptides that exhibit better physicochemical and pharmacokinetic properties than peptides. Oligo-(N-substituted glycines) (oligo-NSG) was previously proposed as a peptoid due to its high proteolytic resistance and membrane permeability. However, oligo-NSG is conformationally flexible and is difficult to achieve a defined shape in water. This conformational flexibility is severely limiting biological application of oligo-NSG. Here, we propose oligo-(N-substituted alanines) (oligo-NSA) as a new peptoid that forms a defined shape in water. A synthetic method established in this study enabled the first isolation and conformational study of optically pure oligo-NSA. Computational simulations, crystallographic studies and spectroscopic analysis demonstrated the well-defined extended shape of oligo-NSA realized by backbone steric effects. The new class of peptoid achieves the constrained conformation without any assistance of N-substituents and serves as an ideal scaffold for displaying functional groups in well-defined three-dimensional space, which leads to effective biomolecular recognition. </p> </div> </div> </div>

scholarly journals Quantitative image analysis of microbial communities with BiofilmQ

2021 ◽  
Author(s):  
Raimo Hartmann ◽  
Hannah Jeckel ◽  
Eric Jelli ◽  
Praveen K. Singh ◽  
Sanika Vaidya ◽  
...  
Keyword(s):  
Image Analysis ◽  
Microbial Communities ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Software Tool ◽  
Image Cytometry ◽  
Quantitative Image Analysis ◽  
Space And Time ◽  
Quantitative Image ◽  
Three Dimensional Space

AbstractBiofilms are microbial communities that represent a highly abundant form of microbial life on Earth. Inside biofilms, phenotypic and genotypic variations occur in three-dimensional space and time; microscopy and quantitative image analysis are therefore crucial for elucidating their functions. Here, we present BiofilmQ—a comprehensive image cytometry software tool for the automated and high-throughput quantification, analysis and visualization of numerous biofilm-internal and whole-biofilm properties in three-dimensional space and time.

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