Subject:
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setting the best PWM frequency for DC motor
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 23 May 1998 06:23:35 GMT
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Original-From:
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John Wong <u2174730@ee.NOSPAMunsw.edu.au>
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Viewed:
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1209 times
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hello everyone, I found some information on "How do I set best PWM
parameters for DC motors?" from the "Robotics Information" homepage,
http://www.hut.fi/Misc/Electronics/robotics.html
and inside it described that in order to make current to flow steadily in
between pulses, you need to satisfy this condition:
2*pi*f*L >> R
where f = swithching frequency
L = armature inductance
R = armature resistance
and >> is much greater than
I am wondering why is this the case and how this will make the current to
flow steadily?? I could not found the reference book where this infomation
is come from, so does anyone know anything about this and explain to me
please?
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