HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/3  >  >>
tekochip
User Rank
Platinum
Plumbing
tekochip   10/24/2013 8:13:40 AM
NO RATINGS
An interesting idea.  There would be less plumbing; fewer hoses to dry out, seals to fail and losses from the hoses flexing during actuation.  I wonder if there is a weight benefit from the reduced plumbing too.


RogueMoon
User Rank
Gold
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!

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.

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? 

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.

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: 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.

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.

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.

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.

Page 1/3  >  >>


Partner Zone
Latest Analysis
We shared our list, now Design News readers tell us which artificial intelligence movies they watch again and again.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
Norway-based additive manufacturing company Norsk Titanium is building what it says is the first industrial-scale 3D printing plant in the world for making aerospace-grade metal components. The New York state plant will produce 400 metric tons each year of aerospace-grade, structural titanium parts.
Researchers have simplified the fabrication of the geometric requirements for fluid motion in microrobots for in vivo medical applications.
The National Aeronautics and Space Administration’s recently announced plan to put an electric airplane in the air by 2018 is forward-looking, but hardly unique.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 11 - 15, Embedded System Design Techniques™ - Debugging Real-time Embedded Software – Hands on
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


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

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service