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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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Loading Collada dae file into SceneKit for joint manipulation

I am loading a rigged collada file into SceneKit and trying to rotate the pelvis forward 45 degrees and spine. The pelvis and spine nodes do load, however, the rotation does not appear to work. The 2 SCNNode classes that are extracted are "joint"…
iOScoder
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Making Dataset for 4 Motors Inverse kinematics using ANFIS in MATLAB

This is the link that explain to solve inverse kinematics using ANFIS http://www.mathworks.com/help/fuzzy/examples/modeling-inverse-kinematics-in-a-robotic-arm.html But the example is only for 2 DOFs Robot. How to make the data set if the robot…
Squirrelcages
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PhysX - Get velocity of a controller

I'm using PhysX 3.3.0. My character is a capsule controller and I need to be able to retrieve controller's actual velocity, which seems a lot harder to accomplish than it should be. I've tried retrieving the velocity of the actor associated with the…
Silverlan
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Forward kinematics data modeling

I have built a simple robotic arm using 3 RC Servos and an Arduino. I just want to play around with it and learn something about robotics. Currently, I am trying to compute the position of the tip of the robotic arm using the three angular positions…
janismac
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Changing the playback speed of an animation entity

I have an entity that plays an animation that runs in my world at speed s = 1. Now starting with a specific time interval in my world it is possible for the animation to slow down, which means it plays at a speed s where: 0 < s < 1. This time…
clamp
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How can rotate an elliptical animation path by a certain amount of degrees?

I'm using the following to get the x and y position of an entity as it travels along an elliptical path over time: x = Math.cos(time)*width/2 y = Math.sin(time)*height/2 Is there a simple way to rotate the entire thing by a certain amount of…
Joncom
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Conveyor belt kinematics Python

I'm trying to create a simulation for a conveyor belt with objects on it, to see how the behaviour would be. I am playing around but struggling with the functionality of the conveyor belt. Right now, I try to add impulse or velocity to the objects…
Ruben Vreugdenhil
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how to convert coordinates from azimuth/altitude to tilt-tilt

I'm trying to build a lightweight antenna tracker with two servos. For mechanical reasons, I'm first mounting servo1 on a base so that it tilts forward/backwards, then mount servo2 on it twisted 90˚so it can tilt left/right. I can basically use the…
Klapaucius Klapaucius
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Forward Kinematics Skeleton Programming

I am putting together a project where I need to be able to source outside data as a means of inputting skeleton joint positions into Maya. Basically I have a spreadsheet of sequential joint positions for the skeleton which I would like to load into…
user15921
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Where to put static and variable values in this equation of an ellipse?

From Wikipedia, here's the equation of an ellipse: I want all ellipses to have a width of 240 pixels. And want to the height of all ellipses to be a value between 10 and 60 pixels which will be randomly generated. Something like this: My questions…
Joncom
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how can i turn of kinematics using any kind of collision

i have this wall and would like to turn off the kinematics thats holding up each brick using any type of collision any ideas?enter image description here
Imbackgaming
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Trying to figure out kinematics

I'm currently trying to learn kinematics and I can't figure out what seems to be a basic problem. It is the following: An 1800 kg car brakes from 15 m/s to a stop in 3 seconds. What is the net force of friction on the tires? If you could help…
excal
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