Previous in Forum: capacitor   Next in Forum: Why Are Ammeters Connected in Yellow-Phase Only?
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
ray.l
Active Contributor

Join Date: Jun 2008
Posts: 11
Good Answers: 1

Skew Control on Wide Rail Yard Machines

07/01/2008 5:55 AM

The current method of indicating skew on one of my yard machines is a very fussy cam limit switch. I am in the process of designing a twin VVVF drive for this machine and am wondering if there are any ideas about skew control. The distance between legs is about 40 meters. I will be having indepent 37KW VVVF drives driving each leg.
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
howzit06
Participant

Join Date: Jun 2008
Posts: 4
#1

Re: Skew control on wide rail yard machines

07/01/2008 6:48 AM

Hi need more information on the application, but their are a few instruments available that can be used for this application, mechanical to electronic switchers, both analog and digital. These can be in corporated into the drive systems, with add in cards.
Register to Reply
Lendog
Power-User

Join Date: Jun 2007
Posts: 141
Good Answers: 2
#2

Re: Skew Control on Wide Rail Yard Machines

07/02/2008 11:28 AM

Perhaps an encoder or something similar.

I worked on a crane that ran on rails with a separate DC drive motor for each rail. The motors were connected in series to try to limit skew, but the distance between the rails was not even close to 40 meters.
Register to Reply
Register to Reply
Have a Different Question?
2 comments

Previous in Forum: capacitor   Next in Forum: Why Are Ammeters Connected in Yellow-Phase Only?

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (53 right now)
Show Members
Advertisement