We resume our analysis of the 6-link robot Jacobian and focus on the rotational velocity part.
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For a simple 2-link planar robot we introduce and derive its Jacobian matrix, and also introduce the concept of spatial velocity.
For a real 6-link robot our previous approach to computing the Jacobian becomes unwieldy so we will instead compute a numerical approximation to the forward kinematic function.
We extend what we have learnt to a 3-link planar robot where we can also consider the rotational velocity of the end-effector.
We consider a robot, which has two rotary joints and an arm.
We repeat the process of the last section but this time consider it as an algebraic problem.
We consider a robot with three joints that moves its end-effector on a plane.
We consider the simplest possible robot, which has one rotary joint and an arm.
We revisit the simple 2-link planar robot and determine the inverse kinematic function using simple geometry and trigonometry.
A number of strategies exist to reduce the effect of these coupling torques between the joints, from introducing a gearbox between the motor and the joint, to advanced feedforward strategies.