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marquessalsero
Joined: 16 Feb 2006
Posts: 3
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 17 Apr 2008 12:51 Unipolar Vs Bipolar stepper motor |
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I am starting with the design of a cnc milling machine but one of my problems is deciding the kind of stepper motor.
Should I use unipolar or Bipolar motors?
Can anyone give me a clue about advantages and disadvantages.
Thanks in advance
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nandhu015
Joined: 11 Feb 2006
Posts: 352
Helped: 26
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| 17 Apr 2008 17:37 Re: Unipolar Vs Bipolar stepper motor |
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marquessalsero
Unipolar basically has 4 windings and easy to drive and has low torque and speed.
While bipolar has 2 windings and hard to drive and has high torque and speed.
Think about using a servo for your project.
Regards
Nandhu
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marquessalsero
Joined: 16 Feb 2006
Posts: 3
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| 17 Apr 2008 18:59 Re: Unipolar Vs Bipolar stepper motor |
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Thanks for your help.
I have been looking also to servo systems but are a lot more difficult for the first iteration ofthe project.
Most of the schematics I have seen fo stepper motor control are a lot more simpler.
So probably will go the bipolar.
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nandhu015
Joined: 11 Feb 2006
Posts: 352
Helped: 26
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| 18 Apr 2008 4:13 Re: Unipolar Vs Bipolar stepper motor |
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Hi marquessalsero
Good selection..
Dont try to use your own stepper.
I would recommand you to use L293 & L298D driver for stepper.
It is lot more easier to work with
Regards
Nandhu
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marquessalsero
Joined: 16 Feb 2006
Posts: 3
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| 18 Apr 2008 18:43 Re: Unipolar Vs Bipolar stepper motor |
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| Many thanks, this is what I plan to use
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melc
Joined: 08 Apr 2005
Posts: 390
Helped: 45
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| 18 Apr 2008 19:08 Re: Unipolar Vs Bipolar stepper motor |
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| marquessalsero wrote: |
Thanks for your help.
I have been looking also to servo systems but are a lot more difficult for the first iteration ofthe project.
Most of the schematics I have seen fo stepper motor control are a lot more simpler.
So probably will go the bipolar. |
Unipolar is easiest when you do not have a specific driver and you use only full step and half step with own designed drivers (with transistors). Bipolar is usefull for being used with standard industrial drivers and microstepping.
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