Abstract
This paper deals with the automatic compensation of analog data measured by the circular test method developed by one of authors. In the circular test method, a 2-dimensional displacement probe, a master disk and an analog XY recorder are needed. The trajectory recorded on the XY recorder does not coincide with the actual trajectory. In this paper, at first, the analog data detected by the 2-dimensional probe is precisely observed, and some problems to be solved are investigated. In addition, a new trigger method to acquire the digital data automatically is proposed. Through the experiments, it is found that-there are some problems to be considered in the acquired data digitally; those are the effects of trigger method, friction between a stylus and a master disk and acceleration of axis. These effects are automatically compensated in the computer and the trajectory processed by the proposed method is compatible to the other method such as the rθ method.
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