Although it looks similar to hook joint or sliding joint, the ball and socket joint has three degrees of freedom. Sir was explaining how it has 3dof at the end of the lecture. To find the dof, we need to find the minimum no.of rotations it will take to arrive at a new orientation. There is no linear motion in the ball n socket joint. Sir proved that the final position (x2, y2, z2) can be achieved by rotating the ball about three axes successively through 3 different angles. Initial position is (x1, y1, z1) 1. First rotation is about Z axis. New point will have same z coordinate. But new x and y coordinates. (Let us call them x' and y') 2. Second rotation is about X axis, this time x' will remain while Y and Z coordinate will change. (Let's call them y'' and z') 3. Last rotation is about Y axis. y" Will remain same but X and Z coordinates will change. Latest coordinates will be (x", y", z") Thus, these three independent rotations are needed to arrive at a given position. Hence 3dof. Hope this helps. Do reply if any more clarification is needed.
@Silver Penetrator these topics are covered in the syllabus of a Subject called Theory of Machines (Also sometimes called Mechanisms). And it is offered only in Mechanical Engineering course and Robotics Engineering. You can pick up a good textbook or take an NPTEL course for specific subject.
@@poonampathak6407 I think if you go to the public library they have a lot of books on robotics. A lot of 10th maths are required to learn this theory, like calculus and mainly trigonometry, so I suggest learning those as well. Trigonometry is easy as cake, only some problems are hard to tackle but with practice you canm
thanks a lot for .....such a good explanation and quality of lecture, ..................
. Thanks a lot for explaining it in a simple and clear manner.
Thank you for share your knowledge. God grant you a lot of knowledge to
share and wealth.
do you have the ppt ?
@@pranavwalvekar1974 it's in nptel link
you cleared my doubts of twist and revolute with your neck movement is a superb illustration, thanks
Amazing lecture .thanks for having helpful in the understanding of introduction of robot & robotics 🙂
Intresting! Loved to learn this...
it is very helpful your explain sir ,thank you.
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which book or notes are they referring to in thses lectures??
🔥🔥🔥🔥
Ball & socket=hip joint
thank you sir
it's helpful, anyone how has "the fundamental of robotics book" written by Dr. D.K. pratihar please share to me
Sir can u explain ball and socket joint another way ?
Although it looks similar to hook joint or sliding joint, the ball and socket joint has three degrees of freedom.
Sir was explaining how it has 3dof at the end of the lecture.
To find the dof, we need to find the minimum no.of rotations it will take to arrive at a new orientation. There is no linear motion in the ball n socket joint. Sir proved that the final position (x2, y2, z2) can be achieved by rotating the ball about three axes successively through 3 different angles. Initial position is (x1, y1, z1)
1. First rotation is about Z axis. New point will have same z coordinate. But new x and y coordinates. (Let us call them x' and y')
2. Second rotation is about X axis, this time x' will remain while Y and Z coordinate will change. (Let's call them y'' and z')
3. Last rotation is about Y axis. y" Will remain same but X and Z coordinates will change. Latest coordinates will be (x", y", z")
Thus, these three independent rotations are needed to arrive at a given position. Hence 3dof.
Hope this helps. Do reply if any more clarification is needed.
@@lidiyapriyadarsinik2815 Do I need to study mechanical eng. for this? I am an ECE student.
@Silver Penetrator these topics are covered in the syllabus of a Subject called Theory of Machines (Also sometimes called Mechanisms). And it is offered only in Mechanical Engineering course and Robotics Engineering.
You can pick up a good textbook or take an NPTEL course for specific subject.
@@silverpenetrator739 the concept of coordinate transformation is also covered in various other courses.
@@lidiyapriyadarsinik2815 in steps 2 mentioned by yourself, he doesn't rotate about x' instead about x. Do x' changes to x". Same for y" in step 3.
slides , notes or book please ???
Sir I am in class 7 sir pls koi book suggest kariye jisko Mai Ghar pe bhi padh saku
Pehle 10th pass kar ja 😆
Ha apki bat to sahi hai leken interest bhi hai to thoda time nikal leta hoo kabhi kabhi video dekh leta 😅😅😄
@@poonampathak6407 I think if you go to the public library they have a lot of books on robotics. A lot of 10th maths are required to learn this theory, like calculus and mainly trigonometry, so I suggest learning those as well. Trigonometry is easy as cake, only some problems are hard to tackle but with practice you canm
These type of people are rare in this world 🌍♥️ best of luck I m also going for it in next year ....but u should study calculus..and more that is must
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