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For connecting shafts whose axes intersect but are inclined to one another at a larger angle than a flexible coupling can accommodate, universal joints are used.
The 4th, 5th, and 6th axes intersect at a point.
Furthermore, in this paper, 3 conditions are proposed: (1) The 4th, 5th, and 6th axes intersect at a point.
Spherical parallel manipulators (SPMs) with revolute joints work under the condition that all joint axes intersect at the manipulator center, where the mobile platform (MP) center is coincident with the center of the base platform.
In this paper we find the inverse of the robot forward-kinematics Jacobian matrix symbolically, to be used in singularity analysis, design for isotropy and optimal control; in fact, the inverse derived here applies to all PKMs whose six active-wrench axes intersect pairwise.
All axes are then arranged radially, with equal distances between each other, while maintaining the same scale between all axes defined to have a minimum of −20 % uncertainties (where the axes intersect) and a maximum of +40 % uncertainties (outer ring) within a 10%% interval.
Similar(51)
The orientation mechanism applies three rotating axes intersecting at one point to ensure that the surgical tools have enough dexterity at any position in the workspace.
A photocopy of a standard circular protractor is marked proximal, distal, anterior and posterior with axes intersecting at the central point (Fig. 4).
From perspective of structure synthesis, certain special geometric constraints, such as joint axes intersecting at one point or perpendicular to each other, are necessary in realizing the end-effector motion of kinematically decoupled parallel manipulators (PMs) along individual motion axes.
This study is based on the parametric conjugate tooth profiles of bevel gear sets having the properties of invariant speed ratios, fixed skew axes (pitch line), zero length of common perpendicular line, two rotating axes intersecting at a point, etc.
c The point where the 2 axes intersects would be the "resolution" CORA that puts into account both the deformity present and that resulting from lengthening along the anatomical axis of the femur.
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