Cycloidal Motion-Law

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Cycloidal Motion-Law

Cycloidal Cam-Law, Motion-Law

A Traditional Motion-Law.  

You CAN specify the:


The Start-Position usually flows from the End-Position of the Previous-Segment.


You CANNOT specify the:

Start-Velocity, End-Velocity

Start-Acceleration, End-Acceleration

Start-Jerk, End-Jerk

Segment Parameters




End- Range

0 ≤ Start-Range < End-Range ≤ 1

See also : MD-Globe-www-24 Tutorial 5: Edit the Start of a Traditional Motion-Law.

See also : MD-Globe-www-24 Tutorial 9: Asymmetrical Motions.

Cycloidal Motion-Law (Cam-Law)

Cycloidal Motion-Law (Cam-Law)

Motion-Law Coefficients

Velocity Coefficient :

Acceleration Coefficient :

Jerk Coefficient :

Jerk at Cross-over :

Application Notes

Dynamic Performance

This Motion-Law is recommended in applications where the period ratio is near to 5 when the input drive is stiff and the shaft speed does not fluctuate significantly under load. It has the good acceleration characteristics at the load and should be used in systems where low residual vibration (vibration after the end of the motion segment) is desired.

Pressure Angle Considerations

It gives a relatively large pressure angle - and so might need a large cam for a given lift and predetermined pressure angle limits, to reduce it.

Drive Torques

This Motion-Law is recommended in applications where no sudden change of input torque is a requirement. Its torque characteristics are particularly good in relation to the other Traditional Motion-Laws when the period ratio is less than approximately 10.