HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/3  >  >>
Elizabeth M
User Rank
Blogger
Re: Individual Servo Pumps - COOL!
Elizabeth M   11/11/2013 11:42:14 AM
NO RATINGS
I appreciate all these comments about the logistics of the new solution, and whether it will in fact simplify efficiency or create more complexity. It makes for a lively discussion. I'm not an engineer myself, so I won't even try to enter this debate...I will leave that to the experts.

William K.
User Rank
Platinum
Re: Individual Servo Pumps - COOL!
William K.   11/9/2013 8:54:02 PM
NO RATINGS
A pump for each actuator is an eay way to grow the system almost without bounds. And each pump would need to be an expensive variable displacement reversable flow type. And the plumbing would become a bit heavier as well.

The ultimate solution would be a single reversable-flow pump under software control, and a large number of on/off low pressure drop routing valves to select which function got the pressure and flow at any particular time. It would make the software a bit more complex, but it would reduce both the losses and the number of pumps. But the plus side is that it could easily contain it's own diagnostics. But it would indeed be a bit more complex than present systems, but not a lot. And the best part is that it would not really require any new hardware being created.

kf2qd
User Rank
Platinum
oR IS JUST A TRADE FOR MORE COMPLEXITY?
kf2qd   11/8/2013 10:07:01 AM
NO RATINGS
More pumps and more pump controllers. Sounds like adding a bunch of complexity. And more service costs because of what will have to be repaired/replaced when something doesn't work.

 

Needs to be tested for 4000 hours at max load and and extreme temperatures to see how it might hold up. And then needs to be left sitting outside in extreme weather for a year. If it still works without major service it might be practical.

Sorry if I sound pessimistic, but I have used these devices and have a son who maintains this kind of equiptment.

Ann R. Thryft
User Rank
Blogger
Re: Individual Servo Pumps - COOL!
Ann R. Thryft   10/29/2013 3:47:58 PM
NO RATINGS
My nephew drives, and maintains/repairs, machines somewhat like these for the City of Abilene, TX, to remove objects from storm drains and creeks. Looks like a brilliant idea.

Elizabeth M
User Rank
Blogger
Re: Individual Servo Pumps - COOL!
Elizabeth M   10/28/2013 7:12:42 AM
NO RATINGS
I agree with you guys, TJ and Chuck--it seems like an obvious fix in some ways, so I am surprised someone didn't come up with it sooner. But now they have, and it should be a great boon for designers of these machines in terms of making them more economical and fuel efficient.

Elizabeth M
User Rank
Blogger
Re: variable speed pumping, nice idea
Elizabeth M   10/28/2013 6:48:50 AM
NO RATINGS
Ah, I take it you either live in Indiana as well or somewhere in the Midwest, RogueMoon, where winter is rapidly approaching, I'm sure! That does sound like a good test. Snow is quite heavy and dense, so it would be a good way to see how the new machine performs.

Elizabeth M
User Rank
Blogger
Re: Plumbing
Elizabeth M   10/28/2013 6:27:36 AM
NO RATINGS
I didn't think of that, tekochip, but I'm sure weight would be a factor as well. In this case, less weight would also add to fuel efficiency, in that there would be less vehicle volume to power.

Charles Murray
User Rank
Blogger
Re: Individual Servo Pumps - COOL!
Charles Murray   10/25/2013 6:57:51 PM
NO RATINGS
I agree, TJ. This is an important story. Who would have thought that software could replace a hydraulic valve? 

TJ McDermott
User Rank
Blogger
Individual Servo Pumps - COOL!
TJ McDermott   10/25/2013 5:25:49 PM
NO RATINGS
Someone had a lightbulb moment when they came up with a pump for each actuator.

RogueMoon
User Rank
Platinum
variable speed pumping, nice idea
RogueMoon   10/25/2013 9:08:21 AM
NO RATINGS
This is a nice idea.  Variable speed pumping opens up possibilities rather than crashing the energy into losses across valves.  As it often snows in Indiana, they might have a good opportunity to try out this modified loader in a real world application by moving the snow from the parking lots.  Winter is coming!

<<  <  Page 2/3  >  >>


Partner Zone
Latest Analysis
Get a load of these strange product designs. What's in the water these design engineers are drinking?
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
Cal Poly students use 3D printing to take flight -- and pass their class.
Celebrity engineer Grant Imahara will host a series of “webisodes” that will examine new technology and innovation from an engineer’s point of view.
The UX Italia video contest recognizes Italian machinery, technology, and other experience solutions that have contributed meaningful improvements to people’s lives and production processes. If you submit a three-minute video showcasing how the quality of Italian machinery's User eXperience is essential to your company's success, you just may win a trip to Italy.
More:Blogs|News
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.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.
Dec 1 - 5, An Introduction to Embedded Software Architecture and Design
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


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 Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service