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seen Jan 27 '13 at 5:20

Programming and Electronics


Jan
14
comment Estimate the damping coefficient of my car
Would I have to integrate the data to get velocity or the acceleration time series would actually be able to be used? I Always thought that car suspensions would be critically damped to return to reference as fast as possible but I keep reading that they are underdamped with damping coefficients of 0.2 to 0.4ish
Jan
14
awarded  Scholar
Jan
14
accepted Estimate the damping coefficient of my car
Jan
14
comment Estimate the damping coefficient of my car
Wow thanks! very informative and well formatted response :) appreciate your time and effort. I'm confused about this part: "the easiest way to do this might be to plot the natural logarithm of the highest point reached for each oscillation against time" Instead of using a camera would it be possible to use an accelerometer and find the highest points if you graph the output of the acceleration? I remember a concept known as logarithm decrements from school briefly, is this what you are talking about?
Jan
14
asked Estimate the damping coefficient of my car
Mar
3
comment Ping pong ball levitation control system question, modeling as a damper?
The issue is that the ping pong ball has to be at a certain position in the tube even if it gets disburbed
Mar
3
comment Noise amplitude increases as sample rate increase
If the amplitude is changing with sample rate it is aliasing, this could mean that you have the wrong sample frequency, or the equipment has the wrong filter or sample size, it depends on the application. I've had signals look like triangle waves when they should be sinusoidal which is pretty bad aliasing
Mar
2
answered Noise amplitude increases as sample rate increase
Mar
2
asked Ping pong ball levitation control system question, modeling as a damper?