平面4節正弦波発生機構の総合

概要

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The output angle of a plane four-bar mechanism whose driven link performs a oscillating motion when the driving link makes a complete revolution can be expressed as a Fourier series in the input angle. As a new method for synthesis of a plane four-bar mechanism to generate a sine wave motion, this report presents such a synthesis method that the klirrfactor (distortion factor) calculated from Fourier coefficients may be used as an index of performance for minimizing the higher harmonics.　In this synthesis method, λ, μ_1, μ_2 which are defined from the stationary link length Z_1, the driving link length Z_2, the coupler link length Z_3, the driven link lenath Z_4 by following equations　λ = (Z_2)/(Z_1), μ_1 (Z^1_1+Z^2_2-Z^2_3-Z^2_4)/(2Z_3Z_4),　μ_2 = (Z_1Z_2)/(Z_2Z_4)　are adopted as the parameters of the mechanism. Moreover, for the specified value of λ, the equi-amplitude curves of the fundamental sinewave of the output angle, the equi-klirrfactor curves, and the equi-linklength curves are constructed in the rectangular co-ordinate system O-μ_1μ_2 and those curves are used as powerful tools for determination of the parameters of the mechanism which generates the sine wave motion with a constant amplitude or a variable amplitude.
山形大学の論文
1978-02-20