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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
All syllogisms have three parts, therefore this is not a syllogism.
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I require 20-25 Nm torque, high acceleration motor. The motor accelerates from 0 to 11.3 rad/s in 1.75 ms and then decelerates to 0 again in 1.75 ms. Do I choose AC servo or DC servo motor?
New Replies:
By Terry on 27 August, 2009 - 2:31 pm -
You might look at Hurst's new website-- http://www.hurst-motors.com -- There is a nice selection...
By William Sturm on 27 August, 2009 - 1:53 pm -
JK> As I understand both of you, I should use a (brushless) DC permanent magnet (3 poles)...
Thank you guys so much for your reply.
As I understand both of you, I should use a (brushless)...
By William Sturm on 25 August, 2009 - 9:28 am -
The terms AC and DC servo are widely misused and don't have much distinction anymore. A DC servo...
By Ken Emmons Jr. on 25 August, 2009 - 8:23 am -
What you need is a 3 phase permanent magnet motor with encoder, and a servo drive that can control...
steppers, how fast art thou?
New Replies:
Sorry I had not noticed your post.
How do I contact you? my email ID is govind DOT mukundan AT...
By Robert Scott on 12 August, 2009 - 8:29 am -
Since your load is light, it is mostly inertial. That means the profile you use to reach any given...
By Brian Beal on 11 August, 2009 - 6:13 am -
What voltage are you running the motor at? That is the primary speed limiter for stepper motors. ...
By curt wuollet on 5 August, 2009 - 6:57 pm -
Do some googling on damping stepper motors. If you are just a little too slow, that will almost...
By William Sturm on 5 August, 2009 - 12:11 pm -
It sounds like you are hitting a resonant frequency, this is primarily a mechanical issue. Try...
By Ken Emmons Jr. on 5 August, 2009 - 8:11 am -
You should calculate your inertia of the mirror and the system you use to mount the mirror (i.e....
problem with DC motor controlled with simoreg 6RA70
GE Frame 5 limited below Rated Power
New Replies:
Hello MIKEVI,
Thanks for your detailed response. Once, I get to the site I will have more...
Dear Colladjl, as you are well aware the more information you provide, the better information this...
Janette electric actuators?
New Replies:
By Bud Buyer on 21 August, 2009 - 6:42 pm -
The high torque 11xxx models are gone, but the mid torque 10xxx models are still available from...
By Ed Piper on 21 August, 2009 - 1:16 pm -
I know this is an old thread, but figured I'd add my 2 cents...
The spelling is Janette. We...
first question - identify a kit which can help build a system to do proximity measurement along with direction
New Replies:
I think that ultrasonic sensors could be applied with triangulation techniques to solve your...
multiple motor single vs. double VSD
New Replies:
Don, he is referring to the indicator contact.. i.e. aux contact whatever you want to call it......
By Don on 18 August, 2009 - 7:31 pm -
Are you saying the output side of each thermal overload is wired in series with the next thermal...
Looking for GSD file for UD73 -- Control Technique Unidrive
New Replies:
go to emersonct.com and click downloads.. software... drives... and it is in the list... You may...
axial vibration is increasing gradually...
Trying to figure out why I am suddenly failing Indramat HDS drives on our flexographic printing press.
New Replies:
Thanks for the input guys, it has been very helpful. My delayed response is due to the fact that...
Problem with the PLS fuction block
Question around encoder principles
New Replies:
By James Ingraham on 11 August, 2009 - 10:15 am -
On the 5V/24V thing. You have to pay attention to input AND output. Some encoders take 5V and...
By Brian Beal on 11 August, 2009 - 6:22 am -
Just to add what has been posted. The voltage rating means input and output. Many encoders are...
By M Griffin on 3 August, 2009 - 12:04 pm -
> 5V and 24 V encoder. Is it means the encoder supply? or it is the maximum Amplitude level of...
Reason for IGBT's failure in Simodrive 611 LT module INT 160A.
from the Electrical engineer department...
Medium Voltage Variable Frequency Drive to Control the Speed of MotorI am electrical engineer by profession and currently I am doing research on medium voltage Variable Frequency drive (also called as VFD, VSD, AC drive, VVVF, etc.)
New Replies:
Hello, Dear Mahesh,
I am in this field of ac drive, frequency inverter. I am interested to get...
DC motor or electro brake?? which is better to apply torque on shaft
New Replies:
If you need apply reactive (i.e. friction type) torque, than magnetic particle brake with current...
By M Griffin on 3 August, 2009 - 4:57 pm -
Talk to Magtrol. http://www.magtrol.com/ They sell this sort of hardware. You will need to talk (or...
AC motor advice, capacitors or windings?
New Replies:
By liston on 1 August, 2009 - 12:38 pm -
William,
What old reference book did you get this from? I am involved with power factoring and...
Need move two motors along two separate rails
New Replies:
The conventional way to control them is to use an encoder to track position of each motor. the...
By Jeffrey T. Johannessen on 30 July, 2009 - 8:14 am -
We have some automation products that achieve this function. We have a positioning system that...
By LinuxVegas on 29 July, 2009 - 10:11 pm -
I have a similar question, I need operate 2 motors on different rails But they will behave...
If both motors are mechanically coupled, than you need to control two axes in Gantry mode - see...
what do yo need the motors to do?? travel opposite each other, independant of each other, together?...
I would like to read a text string from a device which connected to the serial port and save this string to a text file or in to a database..
New Replies:
By Umaima on 29 July, 2009 - 12:53 pm -
Hi there,
plz send me the source code in c for sending the data to the serial port. ...
Where to find high power bidirectional brushless DC motor controller
New Replies:
Servo (or bi-directional) single axis motion controller with build-in power amp you may find in...
By AL on 24 July, 2009 - 12:21 pm -
Check out the Battle Robot sites, especially:
...
By Roy Matson on 24 July, 2009 - 11:48 am -
Is your motor with permanent magnet fields? If it's not you will need to change the field...
By William Sturm on 24 July, 2009 - 10:57 am -
Just a guess, but try these folks: http://www.robotpower.com/
Bill Sturm...
Moog servo valve models interchangeability
New Replies:
By David on 27 July, 2009 - 10:24 am -
>We kinda need this 700-144E piece urgently. Do you have any info?? <
I have one....
electrical engineer doing research on medium voltage Variable Frequency drives
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