Abstract
There is a method of measuring a shake and vibration quantiatively and evaluating, in one of the performance evaluations of a moving object like vehicles. In that case, the acceleration information as an amount of physics of a shake and vibration becomes important. Furthermore, the acceleration information on 6 DOF is needed when measuring complicated motion of vehicles etc. Then, we constructed 6 DOF acceleration sensor system which used three dual-axis accelerometers, and enabled measurement 6 DOF acceleration. In this paper, we analyzed the problem of the stability in the measurement system of the same method that was not clearly analyzed in the past research. We took notics of a nonlinear term that consist of an angular velocity, which included in the derivation algorithm of 6 DOF acceleration, and made clearly how a nonlinear term would influence the stability of a measurement system by the analysis simulation. And we installed the acceleration sensor in vehicles and performed measuring 6 DOF acceleration to a slalom run. As a result of comparing survey data with a simulation data, emission of the measurement system under the influence of a nonlinear term was not seen.
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