Triple-Harmonic: 'Approximate Modified Sine'

To use this Motion-Law:

1.Select the Triple Harmonic in the Motion-Law Selector
2.In the Segment Editor, edit the Segment Parameters to:
First Harmonic = 5.1968
Second harmonic = 1.7690
Third Harmonic = 0.6057

MotionDesigner calculates the third harmonic, based on the fact that the segment always creates a D-R-D segment.

CamLaw-TripleHarmoinc-ModifedSine

Summary

This law is continuous.

The output motion is near to the traditional Modified Sinusoid Acceleration Cam Law. However, it has only three harmonics and, thus, it is a smoother function at the higher derivatives.

The maximum velocity is slightly lower and the nominal acceleration is slightly higher than the traditional law.

Harmonic Settings that give an Acceleration similar to a Modified Sinusoid

Harmonic Settings that give an Acceleration similar to a Modified Sinusoid

Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd