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Member Information and Posts by LeGa
Limit cycle behaviour in digital feedback system
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For constant Set-point Output control signal (current/torque command for example) can switch...
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?
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Most laser interferometers have - except absolute position output - such output option as standard...
I have a question on typical practices for system similation and studies after one has identified (approximated) the transfer function coefficients of a plant.
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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...
Magnetic levitation controller
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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...
Servo Drive reaction when at high speed and torque require exceed max torque on motor.
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You must review SOA of your motor from Speed - Torque curve. As a rule a nominal torque is defined...
difference between Rated speed and Maximum speed in servo motors ?
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Rated speed is defined with rated or nominal voltage (12, 24, 36, etc) as a rule. Max speed is max...
PLC/DAC with 24 bit resolution Voltage I/O
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16-bit isn't such used due to high price vs. really commonly used 8 or 10-bit ones. You can use two...
from the Electrical and Electronic Engineering department...
From Transfer Function to Frequency ResponseTwo questions on the theory of Laplace and Fourier transforms.
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You can use Laplace and inverse Laplace transforms directly. Equation for such simply function are...
What is the benefit of a high-bandwidth control for synchronous motors?
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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?
...
Looking for a solution how to control a custom robot
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Better way vs. PLC is motion controller. Than Dual axes DMC controller with build-in servo amps...
Current mode of the servoamplifier-Need for specifications on the response of the DC motor in current loop
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If you want check current mode amp, then you need check motor current (from driver's current...
designing BLDC drive with a Micro-Controller based controller for E-bike application
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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...
Developing a pilotless dc vehicle - which will follow a
magnetic tape on ground.
magnetic tape on ground.
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Using PLC for control BLDC motors isn't good idea due to necessity to commutation of motor and use...
Several quick questions about implementing state space control of an inverted pendulum balancing platform
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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...
How to calculate Open frame dc motor parameters?
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If you looking for frameless DC motors as DC torque motors from Kollmorgen,
...
What is the requirement for torque estimation procedures in speed control of motors?
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Because coils' current isn't proportional directly to load's torque/force due to dynamics,...
encountering problems when driving a BLDC motor with PWM control
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It seems you have problem with motor's voltage and not with power. You must check Duty cycle for...
First project with a Baldor Servo motor, newbie has questions
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It seems your motor has resolver and not encoder. And you must configure resolver for need...
Student project, requesting suggestions: DC motor position controller, has steady state errors.
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At first, check encoder's mounting to motor shaft.
At second, how looks steady-state error...
Correct gap for 3 linear motors placed the motors one above the other (parallel)
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Do you connect both motor's coils to the same amp? And if Yes, do you perform any phasing procedure...
DC motor controller for a 8kW powered 24-48 V DC motor
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What's kind of your motor (i.e. PMBL or others)? Is 8kW cont. or peak power?...
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.
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The simpler way is using Analog Output 0-10V for speed regulation (instead of PWM one) and Digital...
Flywheel Energy Storage - Motor to Load Inertia Mismatch
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The another problem, except tuning of system with such very high mismatch, would be...
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?
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For tuning each servo axes separately as first step, Application Note from Galil maybe suggested:
...
Can anybody told me how to tune Baldor Linear motor .
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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...
What are the difference between PLC and motion controllers
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Modern motion controllers are closer to PAC vs PLC because except possibility to perform complex...
CANOpen technologies
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Beckhoff has wide range products for many popular field buses including of course CANopen one. ...
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?
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Pay attention on peak torque also - you define very high dynamic (more than 6,000 rad/s^2!) for the...
DC motor or electro brake?? which is better to apply torque on shaft
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If you need apply reactive (i.e. friction type) torque, than magnetic particle brake with current...
Need move two motors along two separate rails
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If both motors are mechanically coupled, than you need to control two axes in Gantry mode - see...
Where to find high power bidirectional brushless DC motor controller
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Servo (or bi-directional) single axis motion controller with build-in power amp you may find in...
need guidelines regarding simulation (simulink model) of bldc motor
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BLDC motor has few sources of torque ripple related with motor itself or control. Which type of...
How Field Oriented Control works (VISSIM example context)
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More basic info regarding FOC you may find from Motion control university inside PMD Inc website -...
A new adventure
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Galil motion controllers have CAD-to-DMC software allowing translate *.dxf or other AutoCAD files...
about inertia ratio of servo
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The inertia ratio (or inertia mismatch) is must be taken into account for servo with low mechanical...
Is there any way to decode encoder's position with only one signal?
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Such type encoder doesn't allow you to define direction of rotation that is possible with two...
About encoder in brushless motor
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Which format of output have your encoder? I.e. digital (A,B quad), analog (1V)... ??...
Millivolt conversion from load cells
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Of course load cell isn't connected to PLC directly. Except Strain Gauge Transmitter with outputs...
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