Closed Loop Stepper vs Normal Stepper Motor. Closed Loop Explained ✔
Vložit
- čas přidán 31. 12. 2018
- The term is Open Loop vs Closed Loop watch and discover. If you have been following my AutoCrafter Build there also an update for that project.
The simple link to all things me: linktr.ee/haledesign
Max is the Golden Retriever. Watch your rags!!!
Parts Used:
- Nema23 Closed Loop Stepper Motor 2.2NM Drive and HBS57 DSP for CNC (eBay)
- Nema 23 Geared Stepper Motor 10:1 High Precision Planetary Gearbox 2.8A 4 Wires (eBay)
- 400W 36V 11A Single Output Switching Power Supply AC to DC SMPS S-400-36 for LED (eBay)
- Antibacklash Ballscrew SFU1605-59''(1500mm) (eBay)
- Original Creality 3D CR-10S LCD Screen 3D Printer Display (eBay)
- MKS-Gen V1.4 Controller Board (Amazon)
Music Credit:
- Intro, The Wave - Onda Norte
- Actuators, Good To You - LED Monster - Věda a technologie
Check out this awesome video by Making Stuff for more information on this topic. czcams.com/video/SoRdEAm1auk/video.html
Hi so i need two drivers to run the hybrid servo motor from the ardruino? Or i can just connect the HBS57 to the ardruino? Thank you
First, both of those motors are hybrid stepper motors. A hybrid stepper motor is simply a combination of a variable reluctance and permanent magnet type motors. That is what makes it a hybrid, NOT the fact that one has an encoder.
Second, you refer to the encoder equipped stepper as a "servo", which despite what other comments have said is technically true, but to be more descriptive, you should refer to it as a stepper-servo, much like a servo using a DC motor should be referred to as a DC-servo, or AC-servo. The definition of a servo is simply an automatic device that uses feedback to correct the action of a mechanism. So this can be a DC motor, AC motor, Stepper motor, a hydraulic system, pneumatic system, magnetic system, rotary, linear......
I want to clarify that this is not a full feedback.
The weak link is the board that gives the direction-step impulses, and the board that counts them. There may be a mistake, and unfortunately my practice shows that it is this mistake that is the most frequent.
The ideal feedback system is a control board that processes the g-code and controls the stepper motors and reads their position. It is possible to improve the system by eliminating the logical control of the step-direction, transfer to the control via the digital bus with confirmation of the information delivered to the controller.
Just letting you know, closed-loop stepper motors are not the same as servos. The Encoder is not the only difference between servos and stepper motors, the mechanics inside are very different. Not trying to be rude, I just don't want others to be misinformed.
This guy is right
"You can use a servo in a 3D Printer but I don't suggest it." Why not? @@CountryAireDesign
@@vairosva3 You want a motor that will immediately move instead of following an error correction loop (PID). Even though a standard stepper can skip steps if it's taxed to perform above its limits or crashes, it's still faster to respond than a servo.
What is the servo?
Servo in the model world of the usual collector motor and feedback on the potentiometer.
A cnc servo drive is a collector or brushless motor and feedback which can be relative and irrelevant, be fixed on the motor axis or on the machine table.
Servo in the world of large machines can be hydraulic, pneumatic, electric or even a gasoline engine with the corresponding intermediate actuators and a whole range of types of feedback.
In the world of aviation devices, these are usually two-phase motors and feedback of sine-cosine transformers.
All this can be considered as servo-motors in the broad sense of the word.
@@adisharr Servo control algorithms still feature a feedfoward term in conjunction with an error correction term. The algorithm will automatically calculate the voltage needed in order to generate the desired torque. Servos are far superior than stepper motors in terms of both controllability and efficiency
He could have added bearing rails down the side to eliminate any screw whip
Congratulations on 100k views.
Cool video man
Quit good explanation. Would it be possible to have a number of non meshing sleeve guide supports for the ball screw on both sides of the guide block? They could be fabricated as a wafer ( low friction material ) to reduce loss of guide block travel. just a thought.
5:12 what is the accuracy for those displacement modules? With HIWIN linear guides HGR you get 2 micron accuracy, but what about these made of aluminum profile?
So you can just add external encoder to make it closed loop?
Some cnc machines ive noticed have gear reduction but your rails are direct connected. Can you tell me why you may want or not want that?
Is this the cloudray hybrid unit? The controller/driver looks to the same unit, but how about that motor?
How do you find out something on the Internet? Say something wrong and wait.
What is difference between close loop stepper and servo
You have managed to install ballscrew in a c beam. How you put the nut to the plate?
Thank you for explaining, very helpful
whats the name of that rail endless screw next to the stepper motors?
Hi, would a closed loop stepper be more suitable for a dtg printer platen base? As so far I’ve only seen the open loop used
Hello,
Can we use servo motors with duet boards?
Thanks
So there is no backlash with this motors?
hi, can you look to thw btt s42b closed loop ?
Does one need a special control board to use closed loop? Or can they be dropped directly on your run of the mill china 3d printer like, Creality ender 5, TronXY, Tevo, ect. If they are not a direct drop in. What control boards or adjustments need to be made? Thanks for your time!
In the example, I'm using an MKS-Gen 1.4 board because it has direct access to the Step, Direction, and Enable signal pins on the main board needed to feed a Driver Board like the HBS57 also used in this example. That is not so easy on boards with "built-in" drivers like on the Ender 3 and TronYX but the Tevo's use the MKS board that will work.
1 inch is exactly 2.54 centimeters or 25.4 millimeters.
Jesus christ the amount of time that sized print would take at those speeds, why didn't you just go with a higher-pitched ball screw?
The sticker: "No tappy tappy"
Hi,
Please tell me, which drive is best in cnc metal router? Servo or stepper?
That depends on how much money you have. If you can afford servo motors, then these are better for CNC. But many people, including me use steppers for hobby use. Steppers cannot turn as fast.
For me, the best option is a stepper motor powered by a high-quality controller of at least 70 volts, centralized feedback such as a kflop control board or similar ones and optical irrelevant lines attached to the table. This is the perfect machine for relatively little money.
Stepper motors can move as fast as you need if you have a good controller and thoughtful mechanics.
How is the backlash with the planetary gearbox? SUBSCRIBED:-)
Actually, I removed it on helpful comment by @keronGR on another video. I'm going to run a few prints without it to get a baseline then added back to see if it makes a big difference or not. I'll do backlash tests at that time and I'll post my results.
just wondering if you or anyone made a video of how amps affects the performance of stepper motor? I got 1.33amp at moment and thinking to do micro stepping but not sure if should go to 1.68amp or more
We use a lot of steppers in the machines we build at work.
Once the coils are saturated with a magnetic field, adding more current will actually decrease the torque. I've actually seen torque on some systems go up when the current was turned down to just below the rating on the side of the motor.
Since steppers have less torque at higher speeds, you can increase that torque by raising the power supply voltage to the rating of your stepper drive. Some stepper drives have higher input voltage ratings. Running your steppers with higher voltages will allow you to run the motor at much higher speeds.
I hooked up an Automation Direct (Rebranded Applied Motion) and ran a stepper at 10000rpm. I was so surprised. Of course it had like zero torque at that speed. But it still ran pretty strong at 1000 rpm. This was a $150 drive that had some advanced features like automatic switching between microstepping and full stepping. That kind of switching gets you the best of both worlds, precision at slow speeds and efficiency at high speeds.
@@microdesigns2000 microstepping is not really used for increased precision, or resolution. Steppers really run best on a sine wave. Microstepping more closely approximates a sine wave than a full step square wave does. So what microstepping nets you is smoother motion. Steppers are adversely affected by harmonics. It's complicated.
@@1pcfred Sure, microstepping is usually utilised for smoother operation. But we often monitor with encoders and rely on microstepping to arrive at accurate positions. A big contributor to angular inaccuracy is excessive operating current.
@@microdesigns2000 a big contributor to angular inaccuracy is microstepping itself. But at least with some kind of an encoder you have a chance of figuring out where you really are. At least stepper motors are not cumulative though. One revolution remains 360 degrees always. Assuming the motor does not stall at some point.
@@1pcfred Yes for a given motor design, the perfect waveform might not be a sine wave, making microstepping itself a contributor to positional accuracy. To deal with that, some of the drives we use have an adjustment for the current of each microstep. This allows the drive to be matched closer to the motor characteristics. Good thing we don't usually have to deal with those accuracies on most projects. The other challenge to accuracy is the load. It is easy to apply a static load and be out of position by half of a full step. Sometimes we just program the target position so that the motion stops in the right place with the load applied.
I guess my point is that steppers are used for precise positioning in many industrial applications, and even microstepping is helpful to achieve better results.
Φιλέ, τσάμπα το Βιου!
103 N.cm is 1.03 N.m
Que fuente me recomiendas para hbs57?
Los obtuve de eBay... Buscar "hbs57"
@@CountryAireDesign pero con de cuantos voltios y amperios? Es por asegurarme que vaya bien
@@pharys10
Mira el manual. mecheltron.com/sites/default/files/webresources/ElectronicComponents/StepperMotorDrivers/Closed_Loop_Drivers/archive/pdf/Hybrid_Servo_Driver_HBS57eng.pdf
informative, but the music is too loud and sucks
Servo motor it's build CNC and 3d Printer Enterprise machine
Awesome video. Can I ask what is your wedding ring made of?
It looks really good and I'm currently looking for one :)
It's Tungsten Carbide. Only thing that will do for a welder like me. Thanks for the interest!
stepper motor
Excellent video,... except for the (real stupid) music.
Please do your viewers a favor and DELETE the music track. It's incredibly annoying. I suspect that a large portion of your dislikes is due to the obnoxious soundtrack.
Delete just the music track? This whole video is misleading. A real servo motor is more than just a stepper motor with an encoder on it.
With "antibacklash" ballscrew, you lost me here. There is no "antibacklash" or zero backlash ballscrew. The correct terminology is "preloaded" ballscrew..
Oh man, I think you must have stopped watching before I covered "Preload" Here is a link to that part. czcams.com/video/Tvcq2rz7Y8Q/video.html Thanks for the interest!!
The term "hybrid stepper motor" has nothing to do with an integrated drive or electronics. A hybrid stepper is one that incorporates permanent magnets and electrical coils. Both of those motors appear to be hybrid. There are steppers that have no magnets and they are not nearly as powerful as hybrids of the same size. Your video should be called something like "Integrated stepper versus standard stepper motors" before you end up with a thousand comments trying to set you straight.
You talked more about he gantry than the motors. tsk tsk.
Like one of those American ducotainment shows: almost no info. If info, then half is not really correct and the other half can be found in 10 secs on Wikipedia.
Man! You don't compare anything! It's just not worth watching. Sorry mate!