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Rotation Measurement

Question asked by memphile on Feb 17, 2015
Latest reply on Mar 15, 2015 by memphile

Hi Folks,


We would like to measure rotations per minute (RPM) of a spinning toy globe. I am a sensor newbie. How can RPM be measured with mems gyros or accelerometers or their fusion ? How do we determine which way axis of rotation is tilted (our globe is not regular globe that is mounted on a fixed stand - rather the stand can move and tilt in any direction) ?


Can RPM be determined by reading gyro values in x, y,z directions and finding resultant vector ? Would magnitude of resultant vector give RPM and direction ?


Thanks in advance for the help, and knowledge.