Nov 7, 2006 #1 E Elits Member level 4 Joined Jul 27, 2005 Messages 79 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Location Indonesia Activity points 1,982 motor dc 10.000 rpm indonesia Hi all i've got task to measure RPM for motor dc. the motor has RPM about 10.000 RPM. What kind of sensor i can use? optocoupler or Photodiode or hall effect sensor? to measure high speed RPM?Why? Thanks Regards, Elits
motor dc 10.000 rpm indonesia Hi all i've got task to measure RPM for motor dc. the motor has RPM about 10.000 RPM. What kind of sensor i can use? optocoupler or Photodiode or hall effect sensor? to measure high speed RPM?Why? Thanks Regards, Elits
Nov 7, 2006 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 Go for IR photointerrupters .. Here are examples: http://www.paralight.us/uploads/pdf/C01~C09(2001-7-20%E6%9B%B4%E6%96%B0).pdf As far as speed is concerned they have rise/fall time of ≈15µs .. All what you need to do is to mount a disk on the motor's shaft and drill/cut one or more holes .. Regards, IanP
Go for IR photointerrupters .. Here are examples: http://www.paralight.us/uploads/pdf/C01~C09(2001-7-20%E6%9B%B4%E6%96%B0).pdf As far as speed is concerned they have rise/fall time of ≈15µs .. All what you need to do is to mount a disk on the motor's shaft and drill/cut one or more holes .. Regards, IanP
Nov 9, 2006 #3 N nguyennam Advanced Member level 1 Joined Sep 6, 2006 Messages 438 Helped 43 Reputation 86 Reaction score 14 Trophy points 1,298 Activity points 4,067 But if we are not allowed to add anything, or there is no room for adding things, so how about the solution? I also concern this matter. And 10000rpm is a very high speed, I have never seen a such high speed motor, or do you just mention about the full scale of your meter? nguyennam
But if we are not allowed to add anything, or there is no room for adding things, so how about the solution? I also concern this matter. And 10000rpm is a very high speed, I have never seen a such high speed motor, or do you just mention about the full scale of your meter? nguyennam