Gyro and accelerometer vibration tests


I performed some rudimentary vibration tests on Razor 6 DOF board with Arduino - which has same gyros and accel as ArduIMU (LPR530AL and LY530ALH, ADXL335). In the above link you'll find complete description of test setup and bunch of images and graphs.

Summary is:
- Razor / Arduino, which is bulkier then ArduIMU, was placed inside HawkSky ( a la EasyStar) and tests were performed on the bench. I tried, as much it's possible on the bench, to simulate flight condition (i.e. no rigid connections to bench)
- there were three groups of tests - no padding, "IMU" padding, and "IMU" + motor mount padding
-Accelerometer data, gyro non-amplified signals, and gyro 4x amplified signals were recorded for part throttle and full throttle




Preliminary thoughts:
- High Pass filter should probably be changed / eliminated - as noted in other threads by Andrus and Doug W.
- I wouldn't mind if bigger capacitors for low pass filters (accels and gyros) were put in place
- Padding matters. Location of padding + board placement matters.

(some previous data on Razor at http://diydrones.com/profiles/blogs/razor-6dof-imu-arduino-dcm )

Views: 948

Comment by Rana on November 16, 2009 at 7:05pm
Excellent testing !

Developer
Comment by Doug Weibel on November 16, 2009 at 7:49pm
"Padding matters" is no surprise to us RC helicopter guys. We always use a special bit of double sided foam tape to mount our gyros. And the type of foam tape matters....
Comment by Hari on February 12, 2010 at 9:40am
Hi Friends,

I have a small doubt for you. http://voidbot.net/razor-6dof.html here he said, " As a side note, pins HP, PD, and ST for both gyros are tied together" . does it mean, we have to tie before connecting Razor IMU to Arduino ? or the sparkfun people already tied them ? It is confusing me.
If the answer for the first question is YES , how can i find those pins to tie.
I appreciate your time.
Thank you.

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