Low cost high fidelity service load generator for random vibration simulation tests
AssigneeThe Boeing Company
InventorJian Dong
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Abstract
An easy and cost-effective method of generating high fidelity simulation service loads. This invention, however, provides a simple but theoretically sound approach to conducting an accelerated simulation test, while obtaining a reasonable acceleration rate for the test. The method includes the steps of developing a service load history database; combining multiple time series models; adjusting the change of each time series model creating an accelerated service load model; regenerating a random vibration load data; and feeding the load data to drive an actuator for a high fidelity random vibration simulation test.
Claims5
A method of simulating service loads comprising the steps of:
- a) developing a service load history database including multiple time series models representative of different service load conditions;
- b) combining the multiple time series models to form a simulation test service load model for a time span of a testing object, wherein each time series model is included in the simulation test service load model in a proportion that is based on an estimated time within the time span for which the service load condition associated with the respective time series model will be applicable;
- c) adjusting a variance of each of the time series models of the simulation test service load model and creating an accelerated service load model;
- d) regenerating random vibration load data based upon the accelerated service load model;
- and
- e) feeding the random vibration load data to a drive simulation system to thereby cause the drive simulation system to simulate service loads in accordance with the random vibration load data.
Dependencies are inferred from the claim text.