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Questions tagged [kinematics]

Kinematics is the branch of mechanics dealing with the motion of points and objects.

Kinematics is the study of mechanics deal with motion of points and objects without regard to the cause of the motion, such as the movement of jointed robotic arm or the movement of pistons and tappets of an engine.

Forward kinematic equations describe the final position of a robotic arm or other system based on the joint parameters.

Inverse kinematic equations describe the joint parameters necessary to move a robotic arm to a particular position. This is also called motion planning.

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Simulation of molecular dynamics in Python

I am searching for a python package that I can use to simulate molecular dynamics in non-equilibrium situations. I need a setup that can handle a fairly large number of molecules in a primarily kinetic theory manner, and that can handle having solid…
Elliot
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How to correctly compute direct kinematics for a delta robot?

I'm trying to put together a simple simulation for a delta robot and I'd like to use forward kinematics (direct kinematics) to compute the end effector's position in space by passing 3 angles. I've started with the Trossen Robotics Forum Delta Robot…
George Profenza
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Forward Kinematics for Baxter

I've put together this Forward Kinematics function for Baxter arm robot based on its hardware specs and the following joints axis: The joint positions for the following forward kinematics are not matching the corresponding Cartesian coordinates,…
Massyanya
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Unity C# Firing a projectile at a target rotating around moving axis

I'm developing a 3D spacegame where the camera is in a constant 2D (top down) state. I am able to fire a projectile of speed (s) at a target moving at a given velocity and hit it every time. Great! Okay so what if that target has an angular velocity…
Chris
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Interpolation of an object considering both acceleration and deceleration over time

I am building a simulator in Javascript and struggling to understand the basics of the physics and kinematic since it's been a while since I graduated. Anyways, I have a loop that should simulate the time and every iteration of the loop is equal to…
fgoncalves
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3d Graphics for a Web Based Application

I've to create a Web Based Application, that amongst other things, includes the following tasks Loading a 3D model from a database. Display the 3D Model. Doing Inverse Kinematics computations to generate the series of steps for the model to move…
user38903
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libgdx - implementing moving Kinematic body

project: I am making a simple project in which i want to be able to make a kinematic body and move it from point x to y. There doesn't seem to be much directly on "Creating kinematic bodies". i've been following a few different tutorials on…
RooneyMUFC
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Kinect SDK - Transform the rotation of an angle by degrees

I am reasonably new to Kinect development and I am trying to build a component that allows rotations of Kinect joints. The purpose of this is to manually "fix" any skeleton data I've captured, post capture, where the skeleton starts jumping around.…
Rob
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How can I determine which half of an elliptical path a point is currently on?

Here is a static frame from an atom animation I'm working on in JavaScript, modelled off this image. Here is the code used to determine the position of an electron in its orbit based on time: // Get position along elliptical path. var x = Math.cos(…
Joncom
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How can I travel along an elliptical path over time and continue to loop indefinitely?

The equation of an elliptical path can be defined as: Where h = a randomly generated height between 10 and 60. And t = time in seconds elapsed. How can I start at a specific point when t = 0, and follow along the path as t increases, looping…
Joncom
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SymPy dynamicsymbols, how to set the second derivative to vanish?

N is the inertial reference frame, the telescopic arm is extending along N.x at a constant rate. The disk is spinning with a constant angular velocity theta_dot. I need to find the expression for the inertial acceleration of point P. The problem is…
Vikram Venkat
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Ultimate struggle with a full 3d space controller

Sorry if i'm stupid or something, but i having a deep dread from a work on a "full 3d" space movement. I'm trying to make a "space ship" KinematicBody controller which using basis vectors as a rotation point and have ability to strafe/move…
Black Butterfly
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Collision between kinematic bodies in Bullet Physics

I'm working with Bullet Physics Engine. My created world is based on: Static Object --> Ground Dinamic Object --> Is going to be moved by other objects. 2 Kinematic objects --> They are going to move the dinamic one. I need to control them from…
aserrin55
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7 DOF Inverse Kinematic with Jacobian and Pseudo inverse

I'm stuck trying to animate a character's arm with pseudo-inverse that has 7 DOFs. The overall FK is like this: (x,y,x) = TrootTshoulderRz(θ3)Ry(θ2)Rx(θ1)TelbowRy(θ5)Rx(θ4)TwristRy(θ7)Rz(θ6) Pendeffector. I'm not sure what I'm doing wrong.…
Esmail
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JavaFX Rolling cylinder on meshview with

What approach should I take to animate rolling of cylinder on custom meshview in JavaFx? Is there any sample (opensource) already available for this purpose? Some kinematics or physics package to support javafx ?
zhivko
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