Abstract
Deadweight force machines cause oscillating components strongly related to the pendulum motion of the deadweight in the measured force signals. An estimating method of the pendulum motion using a build-up system has been proposed in previous papers. In this paper, the estimation algorithm was confirmed by comparison with the directly measured trajectory through the analysis of a 500 kN deadweight force standard machine in Korea Research Institute of Standards and Science. After the dynamic analysis of the force machine, it was modified to decrease the pendulum motion effects by accurately controlling its loading speed. As a result of the modification, the oscillating level due to the dynamic behavior of the force machine has been reduced considerably.
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