Mechatronics Zone

Can Pneumatics Play a Bigger Role in Mechatronics Designs?

1 saves
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 3/3
User Rank
apresher   7/17/2012 3:22:00 PM
Chuck,  The overall precision of pneumatic axes is still a concern, the compressibility of air being one variable, but many applications don't require high precision.  When there is a need for balance between cost, flexibility and the need for precise movements in the five to ten micron-range is not required, servo pneumatics can fit into that gap. The technology is working to take the best of both worlds, and combine the flexibility and software control of electromechanical systems with the speeds and feed force advantages inherent with pneumatic axes.

Other areas where the technology fits are handling of hazardous products such as explosives where you can't guarantee the surrounding air is clean and there is a need to operate on a low voltage since a servo pneumatic system can operate on a 24 VDC supply. Another is where there are space constraints in the machine design, and no high position accuracy requirements.

Charles Murray
User Rank
Re: Pneumatics
Charles Murray   7/17/2012 2:48:59 PM
Al, I'm curious about the uptake of servopneumatics. Have engineers been able to get past the issue of the compressibility of air? Mathematically, this is a really intimidating subject, which I think desrves more study at the university level.

User Rank
apresher   7/17/2012 1:56:22 PM
There is alot of work being done on the controllability of pneumatics using proportional control and more extensive use of sensors in systems. Plus, servo pneumatics is emerging as a technology that offers the flexibility of multi-position and force control with position and velocity monitoring. Positioning and force tasks are linked and sequenced, reducing PLC I/O requirements and programming complexity. There are still many simpler applications where the price points of pneumatic systems make them competitive with other technology alternatives especially in apps that have used pneumatic solutions in the past.

Jon Titus
User Rank
Fluid Logic = Fluidics
Jon Titus   7/17/2012 12:45:10 PM
In the '60's and '70's, fluid logic circuits got quite a bit of press but as far as I know the uses these days are few and far between. Why bother with fluid gates when they're available on a chip as electonic components?

User Rank
the application influences the decision
GlennA   7/17/2012 11:12:04 AM
The power source has to be compatible with the application.  Hydraulics are usually low speed, high torque, and high power.  Pneumatics are usually high speed, low torque, and low power.  I have seen many machines with pneumatic cylinder actuators.  There are also pneumatic logic elements that can be used to control a process without electrical solenoid valves.  My Fluid Power courses included both hydraulics and pneumatics.

User Rank
Really competitive with electric?
naperlou   7/17/2012 9:57:55 AM
Jon, I wonder if there is really an advantage to pneumatics.  They do have some of the advantages you cite. On the other hand, they are not, I suspect, as controllable as electrical devices.  Many years ago my father, who worked at a government lab, thought that hydralics would take over for many applications.  They were making the equivalent of control circuits with hydralics.  He even broght home some of the machined plates to show me.  Well, that never happened.  The controllability of electro-mechanical devices will make them a prime contender for some time to come.

<<  <  Page 3/3
Partner Zone
More Blogs from Mechatronics Zone
Suppose you wanted to create a FIR filter with your own requirements. How would you find the necessary coefficients, and how many of them would you need?
Switched-capacitor filters have a few disadvantages. They exhibit greater sensitivity to noise than their op-amp-based filter siblings, and they have low-amplitude clock-signal artifacts -- clock feedthrough -- on their outputs.
This column wraps up our discussion of encoders with information about resolvers, which provide angular data over 360 degrees.
Engineers use rotary encoders to measure the angular position of an attached device or to measure distance indirectly.
The Machinist Calc Pro computes speeds and feed rates for milling, turning, and drilling: cutting speed, spindle speed, feed rate (inches/minute), cutting feed, etc.
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 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.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
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.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
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