本文介绍一种通过坐标变换生成容积式偏心转子比例控制器凸轮理论廓线的方法。

The coordinate changing method used to bring the CAM theory profile of the eccentricity rotor tri-proportion controller was introduced in this paper.

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主要阐述了恒流量往复泵中凸轮理论廓线与实际廓线的设计，并给出了它们各自的方程序，为这种特殊廓线凸轮的设计、制造给出了理论依据。

The design of theoretical and actual CAM outline was set forth and their equations were given, which established the theoretical basis for the design and manufacture of the CAM with special outline.

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在给出了凸轮的廓线坐标后，采用三次样条函数对凸轮廓线进行逼近，使得理论分析结果更具实用价值。

After give out the coordinates of cam profile, the paper uses cubic spline interpolation to approximate the cam profile, which make theoryly result more practicable.

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