We can help with -
- DC Brushless Motor
- Block and Rail
- CNC Parts
- CNC Cam Software
- Breakout boards and MPG
- CNC Spindle
- CNC Gear Box
- CNC Control Box
- Milling Machine Spindle
- CNC Router
- Temperature Controller
- Variable AC Transformer
Fundamentals of Operation
Stepper motors operate differently from DC brush motors, which rotate when
voltage is applied to their terminals. Stepper motors, on the other hand,
effectively have multiple "toothed" electromagnets arranged around a central
gear-shaped piece of iron.
The electromagnets are energized by an external control circuit, such as a microcontroller. To make the motor shaft turn, first one electromagnet is given power, which makes the gear's teeth magnetically
attracted to the electromagnet's teeth.
When the gear's teeth are thus aligned to the first electromagnet, they are slightly offset from the next electromagnet. So when the next electromagnet is turned on and the first is turned off, the
gear rotates slightly to align with the next one, and from there the process is
repeated.
Each of those slight rotations is called a "step", with an integer number of steps making a full rotation. In that way, the motor can be turned by a precise angle.
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ReplyDeleteThis is really interesting information about how stepper motors operate!
ReplyDeleteThank you for explaining the difference between DC Brush Motors and Stepper Motors.
ReplyDeleteGreat explanation of the electromagnets that are involved in the operation.
ReplyDeleteI am learning wood working using your CNC routers and software and find it really easy to use and program, great stuff
ReplyDeleteThanks
James - Student