Cubic Cam-Law, Motion-Law

Cubic : is a 'Polynomial' Motion-Law. A different name is Constant Jerk

Segment-Editor AND Blend-Point Editor

CAN specify the:

•Position at the START of the segment.
•Velocity at the START of the segment.

The Position motion-value usually flows from the Previous-Segment to the START of the segment.

CAN specify the:

•Position at the END of the segment.
•Velocity at the END of the segment.

CANNOT specify the:

•Acceleration at the START and the END of the segment.
•Jerk at the START and the END of the segment.

MotionLaw-Cubic-1

Cubic from '0' to '1'

In the image, the Blend-Point values at the START and END are:

•Position: 0 ; 1mm
•Velocity: 0 ; 0mm/sec
•Acceleration: Undefinable
•Jerk: Undefinable

Cv = 1.5

Ca = ±6

Cj  = 12

Application Note

Any application where you must have a Constant Jerk [acceleration changing at a constant rate].

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