HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Automotive News

Steer-By-Wire to Reach Production Vehicles

NO RATINGS
< Previous Page 2 / 2
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 6/6
Battar
User Rank
Platinum
One more computer to go wrong
Battar   11/29/2012 9:16:10 AM
NO RATINGS
Today I drive a car with mechanical linkage and electric power boost (by chance, also a Nissan).  Nissan propose to give me the same, with an extra sensor and wire to the steering mechanism. The electrical signal will be the primary mechanism, but so what? It doesn't replace the existing linkage. Its extra - extra weight, extra power, extra complexity. What happened to "keep it simple" ? Keeping the mechanical linkage in place as a backup is Nissans' way of saying "we like the new system - but we don't fully trust it"

Cabe Atwell
User Rank
Blogger
Re: Mechanical Backup
Cabe Atwell   11/29/2012 2:17:07 AM
NO RATINGS
If airplanes mostly work that way, why not cars?

I think the only down side is the number of automobiles on the road. The chances of the system failing are far greater than with cars. You cannot guarantee that the car is professionally maintained. However, if this system is fool proof, I mean that with masses in mind, then it is the future.

Just a thought.

C

Charles Murray
User Rank
Blogger
Re: Mechanical Backup
Charles Murray   11/28/2012 6:07:18 PM
NO RATINGS
Right, Rob. For now, the clutch is there, but Nissan told us that if the mechanicals were ever removed, its engineers would incorporate a fail-safe sub-system. At this point however, it's not clear how the fail-safe sub-system would work.  

Rob Spiegel
User Rank
Blogger
Re: Mechanical Backup
Rob Spiegel   11/28/2012 4:26:50 PM
NO RATINGS
Interesting story, Chuck. It seems that the real gain will come when the redundant mechanical steering is eliminated. Yet that means that you wouldn't have steering if the electrical system failed.

Charles Murray
User Rank
Blogger
Re: Mechanical Backup
Charles Murray   11/28/2012 11:48:25 AM
NO RATINGS
You're not alone, Greg. I think most consumers will feel safer knowing the shaft is there, at least until steer-by-wire has a few years of success behind it.

naperlou
User Rank
Blogger
Re: Mechanical Backup
naperlou   11/28/2012 10:37:44 AM
NO RATINGS
Greg, the backup is absolutely required.  While it is rare, I have been in a car where the power failed and the power steering stopped working.  This was a hydralic system, and it was very hard to steer the car, but at least it could be done.  Electrical systems are more likely to go out on a car, I would venture to guess, than the purely mechanical ones.  Especially electrical systems that are digital. 

Greg M. Jung
User Rank
Platinum
Mechanical Backup
Greg M. Jung   11/28/2012 9:25:33 AM
NO RATINGS
I really like the mechanical shaft backup system for this design.  There is always a chance of an unintended failure and this backup shaft is a good way to mitigate this risk.

<<  <  Page 6/6
Partner Zone
More Blogs from Automotive News
The 2015 North American International Auto Show serves as a perfect snapshot of todayís auto industry.
General Motorsí glitzy public unveiling of the Bolt concept car this week shows commitment to the future of electric vehicle technology, but it also heaps pressure on its engineers to meet a challenging set of technical goals.
Toyota Motor Corp. made its case for a hydrogen future this week, rolling out the hydrogen-powered Mirai and saying that it will grant royalty-free use of thousands of fuel cell patents to competitors.
Consumers like hybrid powertrains because they burn less fuel and cost less to operate. But the hybridís growing popularity is taking it into a relatively new realm.
A bold, gold, open-air coupe may not be the ticket to automotive nirvana for every consumer, but Lexusí LF-C2 concept car certainly turned heads at the recent Los Angeles Auto Show. Whatís more, it may provide a glimpse of the luxury automakerís future.
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Feb 9 - 13, Embedded Development Using Microchip Microcontrollers and the CCS C Compiler
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Stratasys
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service