Predicting numbers of performance failures in the manufacture of dynamic systems | IEEE Conference Publication | IEEE Xplore

Predicting numbers of performance failures in the manufacture of dynamic systems


Abstract:

In this work, a method for determining the reliability of dynamic systems is discussed. Using statistical information on system parameters, the goal is to determine the p...Show More

Abstract:

In this work, a method for determining the reliability of dynamic systems is discussed. Using statistical information on system parameters, the goal is to determine the probability of a dynamic system achieving or not achieving frequency domain performance specifications such as low frequency tracking error, and bandwidth. An example system is considered with closed loop control. A performance specification is given and converted into a performance weight transfer function. The example system is found to have a 20% chance of not achieving the given performance specification. An example of a realistic higher order system model of an electro hydraulic valve with spring feedback and position measurement feedback is also considered. The spring rate and viscous friction are considered random variables with normal distributions. It was found that nearly 6% of valve systems would not achieve the given frequency domain performance requirement.
Date of Conference: 10-12 June 2009
Date Added to IEEE Xplore: 10 July 2009
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Conference Location: St. Louis, MO, USA

References

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