Results 1 to 2 of 2

Thread: how to find roll, pitch yaw....

  1. #1
    Dec 2008

    how to find roll, pitch yaw....

    given an x,y,z position for the end of an robot arm(end effector), is there any way to find the roll, pitch and yaw for it...Given access to entire history of x-y-z positions. I'll be using IK then to evaluate whether these values are possible or not. All I need to find is just some 'correct' value for them....

    any pointers for how to compute the roll-pitch-yaw values....
    Last edited by kumarpam; Dec 9th 2008 at 08:19 PM. Reason: formatted comments
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member Greengoblin's Avatar
    Feb 2008
    (x,y,z) in cartesian co-ordinates is (\rho\sin\phi\cos\theta,\rho\sin\phi\sin\theta,\rh  o\cos\phi) in spherical co-ordinates.

    where \rho is the distance of the end of the arm from the origin, \phi is the pitch, and \theta is the yaw. This is assuming your arm is a single straight line pivoting about a fixed origin, in which case, there would be no way to find roll, since a change in roll does not cause a change in (x,y,z) position...the arm just rotates about its central axis, leaving the endpoint in the same position.

    What exactly is the setup of your arm? I guess it's more complicated than a single straight line, and you have joints in it.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Calculating the roll and pitch of an object
    Posted in the Geometry Forum
    Replies: 0
    Last Post: Jul 27th 2011, 04:54 PM
  2. A wiimote pitch/roll/yaw questiion
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: Apr 12th 2010, 11:02 PM
  3. pitch of heklix
    Posted in the Calculus Forum
    Replies: 1
    Last Post: Nov 19th 2009, 11:39 AM
  4. Pitch of a rafter - Help Please
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: Jul 18th 2008, 02:49 AM
  5. Great card game question: Pitch
    Posted in the Statistics Forum
    Replies: 1
    Last Post: Jan 14th 2008, 02:45 PM

Search Tags

/mathhelpforum @mathhelpforum