Timeline for BLDC vs Stepper motor
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 28, 2021 at 18:37 | comment | added | D.A.S. | I designed at Stepper 1mx1m gantry and I limited the acceleration step rate with a constant number so it would never miss a step. Yet I could drive it up to 1m/s with a tiny 12W motor. Fast , quiet and reliable with 0.1mm resolution. But it is a common design flaw or feature when position does not matter between endpoints. | |
| Oct 28, 2021 at 18:32 | comment | added | Enrico Migliore | Stepper motors miss steps all the time. | |
| Oct 28, 2021 at 18:29 | comment | added | D.A.S. | But a well design Stepper can exceed the toque demands and rarely miss a step, but is slower with less torque as they skip steps . My Mercedes Real hatch door uses as stepper motor and it skips steps frequently now (tick tickiety tick) when the friction is too high but stops end when the end stop switch is detected or stops if the current spikes are too frequent or reverses if it hits an object. It sounds like a plastic gear skipping yet no damage is done | |
| Oct 28, 2021 at 18:23 | comment | added | D.A.S. | Stepper motors are most common in rotary (Floppy disk drives) then axial control like Gantry XY and 3D printers But if you need higher power, speed torque , quiet and fine position control you would always choose a BLDC motor and 1 of many feedback sensors for position sensing, like HDD's use intersector servo dibits between data sectors. These are now called Rotary Servos but originally they used Linear servo actuators which are still used today for other applications. Linear Servo motors have far greater torque abilities and never miss a step. But Steppers are cheaper and common for this. | |
| Oct 28, 2021 at 18:19 | history | answered | Enrico Migliore | CC BY-SA 4.0 |