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L
How to handle pulse loss during transmission?
Of course GND connection will be done radially to avoid voltage drop on it, i.e. all grounds must be connected at the same GND point.
LeGa
Post #2
Dec 1, 2023
Forum:
Motion Control
L
BLDC motor Ld and Lq
The direction of Ld and lq are correct... But because d-axis is magnetic flux axis thus Ld affects magnetic flux of permanent magnets and therefore affects back-EMF and further the motors speed (field weakening effect with Id<0). And Iq affects the torque as well.
LeGa
Post #9
Oct 1, 2023
Forum:
Motion Control
L
BLDC motor Ld and Lq
Some notes regarding sent link: 1. The slotted (aka ironcore) motor has iron core around which are wound stator coils. Therefore such motor has higher power density vs slotless one. 2. The modern power amplifiers for servo applications used motor encoder for commutation as rotor position sensor...
LeGa
Post #7
Sep 12, 2023
Forum:
Motion Control
L
BLDC motor Ld and Lq
Such non salient motor with different Ld and Lq intended for field weakening (mostly used for EV with DC bus from battery) where both inductances are shown efficiency of this method.
LeGa
Post #6
Sep 1, 2023
Forum:
Motion Control
L
Xinje servo motor homing problem
If the Home positions are the same, check Modulo operation mode is activated.
LeGa
Post #4
Jun 20, 2022
Forum:
Motion Control
L
Advanced "PID" math
Look for "On The Fly" function with modern servo controllers
LeGa
Post #3
Jun 5, 2020
Forum:
Process Control
L
Stepper Motor Acceleration
The stepper motor have limited acceleration - you can check with lower acceleration firstly.
LeGa
Post #3
Jun 5, 2020
Forum:
Motion Control
L
Using an encoder with a Beckhoff EL7342
No problem with new EL7342 - it have wide encoder inputs from 5V, i.e. 5V encoder can be connected directly
LeGa
Post #2
Jun 5, 2020
Forum:
Motion Control
L
difference between a and z in encoders
The encoder has three pairs of differential signals A+,A-, B+.B-,I+,I-. For standard operation you need to use A+,A-, B+.B or A+ and B+ as single ended connection. The resolution of A,B signals is 1200 pulses per revolution; 1 pulse per revolution is for I signal. You must configure your...
LeGa
Post #4
Jun 5, 2020
Forum:
Motion Control
L
Matching brushless motors and drivers
Two types of motors with current 4A/8A only can be controlled by the driver with max output current 8A. The operation mode is velocity control with 6-step commutation.
LeGa
Post #2
Jun 5, 2020
Forum:
Motion Control
L
Digital Servo Drives
It's impossible at all! The resolver is analog position sensor with sine/cos output produced under applying high frequency analog excitation. The encoder has digital A,B signals as a rule.
LeGa
Post #3
Nov 6, 2019
Forum:
General Automation Chat
L
Regenerative Braking vs Dynamic Braking
The regenerative braking - due to costliness - may have sense with power >5kW only. And dynamic braking is used for effective deceleration when servo closed loop is disabled.
LeGa
Post #5
Oct 1, 2019
Forum:
Motion Control
L
EMC/EMI Filter Question
The filter on the output side of the VFD doesn't protect both, no VFD and no motor - it decrease EMC/EMI level produced by VFD itself simply.
LeGa
Post #3
Jan 30, 2019
Forum:
Motion Control
L
How to Synchronize Motor Speed
You must choose inverter with additional encoder input for implement Master-Slave mode.
LeGa
Post #3
Jan 30, 2019
Forum:
Motion Control
L
Yaskawa Servo Motor Encoder Alignment
The better way is to contact local Yaskawa representative.
LeGa
Post #2
Jan 30, 2019
Forum:
Motion Control
L
Question on PID Controller and Adaptive Control
You can control your DC motor with open loop by changing PWM duty cycle, but using rate control for transition processes. If you want close velocity loop control, simpler back-EMF feedback maybe helpful.
LeGa
Post #4
Nov 11, 2018
Forum:
Motion Control
L
Linear Motor/XY Table Brands
Look at Anorad, Etel, Hiwin, Schniberger, Akribis and Newport linear motors and stages manufacturers.
LeGa
Post #2
Nov 11, 2018
Forum:
Motion Control
L
Unidrive M700 with EtherCAT
Maybe you need define "remote" mode for EtherCAT using RS232?
LeGa
Post #2
Nov 11, 2018
Forum:
Motion Control
L
A.C Servo Drives and Motors
The right way is using Manual from AC servo drive manufacturer.
LeGa
Post #2
Nov 11, 2018
Forum:
Motion Control
L
Synchronizing 2 Servo Motors Connected to 2 Rolls with Different Diameters
Do you use standard Master-Slave configuration - i.e. Slave controlled by Master encoder? Do you have high or low difference between both rolls' diameters? What's happens if you keep Gear ratio constant? i.e. one of motor load is increased?
LeGa
Post #4
Dec 27, 2017
Forum:
General Automation Chat
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