Circle Center Fitting (CCF), a phasor method of frequency measurement, is innovated and proved, and it has the practical value of engineering.4.
3、提出并论证了“圆心拟合法”相量测频方法,具有一定的应用价值。
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然后，着重讨论了用于轴承边界的圆度、尺寸和圆心度检测的两种计算方法—点—圆变换法和圆形曲线拟合法。
Then, two methods are discussed which are point-circle transformation and circular curve fitting for inspecting the bearing's circularity, dimension and concentricity.
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