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(a) Calibration results for the fiberoptic rotation sensor. R-squared values for the linear fitting 1, 2, and 3 are 0.98, 0.88, and 0.55, respectively. (b) Comparison between the measurements by the rotary encoder and the developed fiberoptic rotation sensor. RMS errors are 2.27°, 2.06°, 4.36°, and 5.99° for the tests when (As, Ts) is equal to (120°, 120 s), (120°, 60 s), (120°, 30 s), and (240°, 120 s), respectively.
