About the damping of the DLS method

Typically: "How do I... ", "How can I... " questions
Post Reply
zhangm365
Posts: 46
Joined: 19 Jun 2021, 12:58

About the damping of the DLS method

Post by zhangm365 »

Dear everyone:
How does the damping factor work in the DLS method? Is there any relevant document?
Last edited by zhangm365 on 06 Jun 2022, 08:15, edited 1 time in total.

coppelia
Site Admin
Posts: 10504
Joined: 14 Dec 2012, 00:25

Re: The damping about the DLS method

Post by coppelia »

Hello,

have a look at this page.

Cheers

zhangm365
Posts: 46
Joined: 19 Jun 2021, 12:58

Re: About the damping of the DLS method

Post by zhangm365 »

What I want to know is how the damping factor affects the control performance of DLS algorithm. For example, what is the principle of adjusting this value?

coppelia
Site Admin
Posts: 10504
Joined: 14 Dec 2012, 00:25

Re: About the damping of the DLS method

Post by coppelia »

Sorry, I didn't realize that you were talking about the Ik module...

If the Jacobian pseudo inverse is expressed as \(J^{T}\cdot (J\cdot J^{T})^{-1}\), then the damped version is: \(J^{T}\cdot (J\cdot J^{T}+I\cdot f^{2})^{-1}\), with f the damping factor

Cheers

zhangm365
Posts: 46
Joined: 19 Jun 2021, 12:58

Re: About the damping of the DLS method

Post by zhangm365 »

Thank you.

Is it true that the greater the damping factor within a certain range, the better the control accuracy of DLS algorithm?

coppelia
Site Admin
Posts: 10504
Joined: 14 Dec 2012, 00:25

Re: About the damping of the DLS method

Post by coppelia »

The only thing you can say I believe is that the greater the damping, the slower but more stable the convergence

Cheers

Post Reply