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Control.com member...
Member Information and Posts by LeGa
Topic: Motion control, servos, steppers, etc.
from the No setup required department...
Absolute Rotary position -out of the box
Originally posted by RRiedel on 13 March, 2014 - 9:37 am
Looking for a device that will output a rotary position such as -potentiometer, abs. encoder, resolver. It must be consistent from one unit to the next so that I do not need to do a setup or calibration.
New Replies:
The precise potentiometer with analog input in your controller is simpler option enough for asked...
Topic: Motion control, servos, steppers, etc.
from the serious department...
BLDC Motor Load Test
Originally posted by nick on 27 February, 2014 - 10:22 am
When testing motor with load curren rapidly decreases when speed goes from 2500RPM to 3000RPM.
New Replies:
Maybe such current changes with speed from 2500RPM to 3000RPM is a load phenomena? What kind of...
Topic: PLCs and related questions.
from the Forum department...
How to control speeds of 3 dc motors
Originally posted by P on 19 February, 2014 - 1:56 am
How to control speeds of 3 dc motors using s7-200 plc.
New Replies:
The Interface between PLC S7-200 and speed controller for DC motor must include Analog speed signal...
Topic: Motion control, servos, steppers, etc.
from the Gray Hair department...
BLDC speed range
Originally posted by Johan on 3 December, 2013 - 3:46 am
How to increase maximum speed of a brushless DC motor?
New Replies:
Some questions before all: 1. Do you not limited by DC bus with actual back-EMF ratio? 2. Do...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Simplest way to make a current controller
Originally posted by Adam M. on 9 November, 2013 - 12:33 pm
How to make a simple torque control system for a mini dc geared motor?
New Replies:
Such design of torque controller isn't so simply even for your 12V 0.5A DC brush motor. Except...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
servo time to destination
Originally posted by Marty on 9 October, 2013 - 8:19 am
Calculating the time it takes a servo to reach its destination.
New Replies:
For calculating of motion time you can use Profiler Calculator from Copley -...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
DC Servo motor and resolver testing
Originally posted by ceilingwalker on 18 July, 2013 - 2:54 pm
Need to test DC servo motor and resolver
New Replies:
The right way for your test could be using any digital servo controller with resolver feedback -...
Topic: Engineering and workplace issues.
from the Forum department...
Control terminology clarification question
Originally posted by Kate on 24 June, 2013 - 9:03 pm
I'm interested to know whether it's legitimate to refer to 5 different parameter sets for a PID controller as 5 different controllers, or if to be accurate, I always have to refer to 5 controller gain sets.
New Replies:
Or "We compared the performance of the standard PID controller tuned by by 5 different ways...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Inertia matching problem
Originally posted by kiril on 12 June, 2013 - 7:09 pm
Inertia matching problem of servo system. The influence of the motor coupler is not known.
New Replies:
Inertia mismatch is ratio between masses coupled through low stiffness component. As a rule, for...
Topic: Communications systems and equipment.
from the Forum department...
Bidirectional data delivery - 50meters
Originally posted by YakirBen-Aliz on 3 June, 2013 - 12:34 pm
I am looking for the ideal way to transfer data bi-directionaly between sensors/actuators and PLCs and other DAQ devices.
New Replies:
The better and safety way is using one of well-known field busses as EtherCAT for example. You must...
Topic: Motion control, servos, steppers, etc.
from the R n D department...
Discrete time control
Originally posted by Dapo on 2 February, 2013 - 3:22 am
Limit cycle behaviour in digital feedback system
New Replies:
For constant Set-point Output control signal (current/torque command for example) can switch...
Originally posted by Jonathan Manton on 21 November, 2012 - 2:05 pm
Can someone point me in the direction of a commercial product that will interface a sensor with an absolute encoder output to a motion controller that expects an incremental encoder input?
New Replies:
Most laser interferometers have - except absolute position output - such output option as standard...
Topic: Motion control, servos, steppers, etc.
from the Question on transfer function data department...
After Transfer Function Identification....
Originally posted by haroldo_psf on 16 September, 2012 - 6:10 pm
I have a question on typical practices for system similation and studies after one has identified (approximated) the transfer function coefficients of a plant.
New Replies:
1. It isn't so important acceleration or velocity you will use because ones differs by operator...
Some questions before advice: 1. Do plant's transfer function is related to velocity-to-current...
Topic: Continuous process industries, DCS questions.
from the Magnetic Levitation department...
Two different controllers, not simultaneously
Originally posted by Fernando Mier Hicks on 5 September, 2012 - 12:54 pm
Magnetic levitation controller
New Replies:
For manual tuning of your servo with one sensor you can use recommendation from Galil - one of...
If you change resolution of feedback sensor, that control loop gain increased accordingly. Except...
Topic: Motion control, servos, steppers, etc.
from the Reaktion department...
Control loop reaction when high speed
Originally posted by AmazingTrans on 7 September, 2012 - 9:01 am
Servo Drive reaction when at high speed and torque require exceed max torque on motor.
New Replies:
You must review SOA of your motor from Speed - Torque curve. As a rule a nominal torque is defined...
Originally posted by Edwin Denson on 19 September, 2010 - 1:46 am
difference between Rated speed and Maximum speed in servo motors ?
New Replies:
Rated speed is defined with rated or nominal voltage (12, 24, 36, etc) as a rule. Max speed is max...
Topic: PLCs and related questions.
from the Forum department...
PLC/DAC with 24 bit resolution
Originally posted by Amith Kalaghatagi on 30 August, 2010 - 4:00 pm
PLC/DAC with 24 bit resolution Voltage I/O
New Replies:
16-bit isn't such used due to high price vs. really commonly used 8 or 10-bit ones. You can use two...
Topic: Engineering and workplace issues.
from the Electrical and Electronic Engineering department...
From Transfer Function to Frequency Response
Originally posted by name on 1 September, 2010 - 10:46 am
Two questions on the theory of Laplace and Fourier transforms.
New Replies:
You can use Laplace and inverse Laplace transforms directly. Equation for such simply function are...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Servo-drive control bandwidth
Originally posted by Frederic on 16 August, 2010 - 9:10 am
What is the benefit of a high-bandwidth control for synchronous motors?
New Replies:
The measuring of any loop bandwidth is well-known procedure. I hope that you use one of standard...
Bandwidth of current loop can be measured at stall rotor location. You may use current monitor...
Such 1kHz bandwidth seems very high even without load. What's bandwidth of inner current loop? ...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Control a custom robot
Originally posted by Penko Mitev on 20 August, 2010 - 1:19 pm
Looking for a solution how to control a custom robot
New Replies:
Better way vs. PLC is motion controller. Than Dual axes DMC controller with build-in servo amps...
Topic: Motion control, servos, steppers, etc.
from the Motor control department...
Current Control-Dc motor
Originally posted by E.Tiniou on 23 June, 2010 - 6:39 am
Current mode of the servoamplifier-Need for specifications on the response of the DC motor in current loop
New Replies:
If you want check current mode amp, then you need check motor current (from driver's current...
Topic: Continuous process industries, DCS questions.
from the Software department...
BLDC motor Accelerator problem
Originally posted by Chaitanya B on 11 April, 2010 - 11:59 pm
designing BLDC drive with a Micro-Controller based controller for E-bike application
New Replies:
Peter, refer in Internet bandwidth ratio is of course first approach only. For...
Recommendation for choosing bandwidth ratio between inner and outer loops you may find thro...
You need to use 2nd power model with electromagnetic and electromechanical time constants for...
Of course closed speed loop with inner current loop will help you. BTW you may use Halls for speed...
Topic: PLCs and related questions.
from the application: pilotless dc vehicle department...
Speed Control of a BLDC Motor with a PLC
Originally posted by PSJ on 15 March, 2010 - 4:04 am
Developing a pilotless dc vehicle - which will follow a
magnetic tape on ground.
New Replies:
Using PLC for control BLDC motors isn't good idea due to necessity to commutation of motor and use...
Topic: Motion control, servos, steppers, etc.
from the Feedback Control Systems department...
State Space Control of Inverted Pendulum
Originally posted by JB on 9 March, 2010 - 12:03 am
Several quick questions about implementing state space control of an inverted pendulum balancing platform
New Replies:
Your structure for single axis must include state space controller and observer for evaluation of...
Do you want implement both state space controller and hardware interface with LabVIEW pack? How...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
open frame dc motor
Originally posted by visu on 20 February, 2010 - 7:36 am
How to calculate Open frame dc motor parameters?
New Replies:
If you looking for frameless DC motors as DC torque motors from Kollmorgen, ...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
why torque estimation?
Originally posted by contrmol_expert on 11 February, 2010 - 10:02 am
What is the requirement for torque estimation procedures in speed control of motors?
New Replies:
Because coils' current isn't proportional directly to load's torque/force due to dynamics,...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
BLDC pwm control
Originally posted by Control expert on 6 January, 2010 - 12:12 pm
encountering problems when driving a BLDC motor with PWM control
New Replies:
It seems you have problem with motor's voltage and not with power. You must check Duty cycle for...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Newbie Baldor servomotor questions
Originally posted by Mark Atherton on 9 January, 2010 - 4:03 am
First project with a Baldor Servo motor, newbie has questions
New Replies:
It seems your motor has resolver and not encoder. And you must configure resolver for need...
Originally posted by NSG on 6 January, 2010 - 1:52 pm
Student project, requesting suggestions: DC motor position controller, has steady state errors.
New Replies:
At first, check encoder's mounting to motor shaft. At second, how looks steady-state error...
Topic: Engineering and workplace issues.
from the Linear Motor mechanical Assembly department...
Linear Motor placement
Originally posted by edwin on 2 January, 2010 - 10:00 am
Correct gap for 3 linear motors placed the motors one above the other (parallel)
New Replies:
Do you connect both motor's coils to the same amp? And if Yes, do you perform any phasing procedure...
Topic: Motion control, servos, steppers, etc.
from the and 3 phase AC department...
DC motor controller
Originally posted by Erdinc Sabur on 24 December, 2009 - 5:43 pm
DC motor controller for a 8kW powered 24-48 V DC motor
New Replies:
What's kind of your motor (i.e. PMBL or others)? Is 8kW cont. or peak power?...
Topic: Engineering and workplace issues.
from the Mechanical department...
motor controller compatible to the PLC s7-200
Originally posted by Gayan Aravinda on 19 December, 2009 - 3:04 am
can you please help me for this matter...i want to have a motor controller which is suitable to be interface with the plc seimens s7-200.
New Replies:
The simpler way is using Analog Output 0-10V for speed regulation (instead of PWM one) and Digital...
Topic: Engineering and workplace issues.
from the Forum department...
Inertia Mismatch - Flywheel Energy Storage
Originally posted by Skyman on 10 December, 2009 - 2:15 pm
Flywheel Energy Storage - Motor to Load Inertia Mismatch
New Replies:
The another problem, except tuning of system with such very high mismatch, would be...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Differential Drive DC Motor Control
Originally posted by Tim on 6 November, 2009 - 2:33 am
How to setup a good PID controller for dc motors you do not have information about. All the motor parameters are unknown. Is it possible to achieve all the motor parameters somehow?
New Replies:
For tuning each servo axes separately as first step, Application Note from Galil maybe suggested: ...
Topic: Motion control, servos, steppers, etc.
from the Linear Motor tuning department...
How to tune Baldor Linearmotor with microflex drive
Originally posted by Edwin on 13 October, 2009 - 12:54 am
Can anybody told me how to tune Baldor Linear motor .
New Replies:
OK, but I need more details of your application: - Microflex operation mode (i.e. current or...
What type of linear encoder with Hall sensor do you have? Can Microflex drive perform brushless...
Topic: PLCs and related questions.
from the Forum department...
Difference B/W PLC and Motion controllers
Originally posted by Denson on 21 September, 2009 - 12:05 am
What are the difference between PLC and motion controllers
New Replies:
Modern motion controllers are closer to PAC vs PLC because except possibility to perform complex...
Topic: Open interfaces, software and hardware
from the CAN I do it? department...
CANOpen
Originally posted by Bill Code on 31 August, 2009 - 6:25 pm
CANOpen technologies
New Replies:
Beckhoff has wide range products for many popular field buses including of course CANopen one. ...
Topic: Motion control, servos, steppers, etc.
from the Motor Selection department...
AC vs DC servo motor in high acceleration application
Originally posted by JonKaldi on 25 August, 2009 - 5:36 am
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:
Pay attention on peak torque also - you define very high dynamic (more than 6,000 rad/s^2!) for the...
Topic: Motion control, servos, steppers, etc.
from the Aerospace department...
Apply torque on shaft
Originally posted by vish on 3 August, 2009 - 8:42 am
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...
Topic: Motion control, servos, steppers, etc.
from the Forum department...
Need to control two motors
Originally posted by rchchmb on 25 July, 2009 - 10:19 am
Need move two motors along two separate rails
New Replies:
If both motors are mechanically coupled, than you need to control two axes in Gantry mode - see...
Topic: Motion control, servos, steppers, etc.
from the High Power department...
Bidirectional brushless DC motor controller
Originally posted by Jim Kueneman on 23 July, 2009 - 11:39 pm
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...
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