Brushed DC motor dead-zone reduction

I searched for the methods used for reducing the dc motor dead-zone and I found the following thread:
https://control.com/forums/threads/dc-motor-dead-zones.19687/#:~:text=one method to reduce the,, 10) is one method.

Some methods are suggested such as:
1- Using current control loop;
2- Increasing the gain of encoder input;
3- Utilizing feed-forward.

I'm new to motor control, so I wanted to ask some questions:
1- How a current loop can reduce the dead-zone?
2- What does the 'gain of encoder input' mean?
3- How a feed-forward can compensate the dead-zone?
4- Are there any other practical methods that can be suggested?

Regards,
Pouriya
 
I searched for the methods used for reducing the dc motor dead-zone and I found the following thread:
https://control.com/forums/threads/dc-motor-dead-zones.19687/#:~:text=one method to reduce the,, 10) is one method.

Some methods are suggested such as:
1- Using current control loop;
2- Increasing the gain of encoder input;
3- Utilizing feed-forward.

I'm new to motor control, so I wanted to ask some questions:
1- How a current loop can reduce the dead-zone?
2- What does the 'gain of encoder input' mean?
3- How a feed-forward can compensate the dead-zone?
4- Are there any other practical methods that can be suggested?

Regards,
Pouriya
Hi

Please have a read on the attached pdf file it is very important for getting a good understanding on DC brush control command systems and dead zone reduction methods:

Do not hesitate to share your feedback!

Regards,
James
 

Attachments

Can the original poster try to respond to the last thread ...
It would be much appreciated ! as we are not here to discuss in the wind !

I mean we make effort to reply so please try to do the same...gentlemen.

Thank you for your attention& comprehension

James
 
Can the original poster try to respond to the last thread ...
It would be much appreciated ! as we are not here to discuss in the wind !

I mean we make effort to reply so please try to do the same...gentlemen.

Thank you for your attention& comprehension

James
Hi James,
Thanks for sending the paper. Sorry for late reply, I was a little busy.
I read the paper.
As I understood, the authors talk about the feed-forward. They say if there is a dead-zone, then a function can be added to the input command in order to compensate it. Am I Right?
But I couldn't find anything relevant to current loop or encoder gain.

Regards,
Pouriya
 
Hi James,
Thanks for sending the paper. Sorry for late reply, I was a little busy.
I read the paper.
As I understood, the authors talk about the feed-forward. They say if there is a dead-zone, then a function can be added to the input command in order to compensate it. Am I Right?
But I couldn't find anything relevant to current loop or encoder gain.

Regards,
Pouriya
Hi Pouriya

Thanks for your feedback!

I have seen that there is bunch of documents related to your questions on the web!

Try to have a search then we can discuss after!

James
 
Hi Pouriya

Thanks for your feedback!

I have seen that there is bunch of documents related to your questions on the web!

Try to have a search then we can discuss after!

James
Yes, you're right.
I've also seen and read some of them. But they're mainly theoretical methods that use sliding mode control or neural networks.
I'm more interested in practical methods. I think the paper you sent before can be used in practice.
 
Yes, you're right.
I've also seen and read some of them. But they're mainly theoretical methods that use sliding mode control or neural networks.
I'm more interested in practical methods. I think the paper you sent before can be used in practice.
Yes you're right! too!

This paper is very interesting for an use in pratice approach..

By the way this is an interesting thread ...do not hesitate to share with us ,what you found and did on that subject!

I will have another search on it..

James
 
Yes you're right! too!

This paper is very interesting for an use in pratice approach..

By the way this is an interesting thread ...do not hesitate to share with us ,what you found and did on that subject!

I will have another search on it..

James
It will be a pleasure for me to share my experiences and I appreciate any help from you.
Thanks for participating in this topic.
 
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