The method of invariant eigen-operator is generalized to the classical system, and the normal coordinate of system is also obtained by using this method.
将不变本征算符方法推广到经典体系，并利用它来求体系的简正坐标。
The generalized polar-coordinate method for measuring involute profile deviations is proposed, and its mathematical model, realization pattern and deviation assessment formula are presented.
提出了测量渐开线轮廓误差的广义极坐标法，给出了广义极坐标法的测量模型、实现方法以及轮廓误差算式。
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