Throw Motion-Law

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Throw Motion-Law

Throw Motion-Law in MechDesigner

The classic Throw motion-law is a segment that has a Rise and Return, When there is a Dwell before and after, it will be a classic Dwell-Rise-Return-Dwell motion (DRRD).

In MotionDesigner, to design a Throw motion-law you must use two segments.

A classic Throw segment/motion-law has:

zero velocity and acceleration at the start and end

continuous acceleration at the mid-point

an acceleration value at its mid-point that is not usually zero

When you use two Flexible-Polynomial segments to design the Throw, you can also control Jerk values and Jerk continuity at the start, end, and mid-point of the two segments.

These Throw motion-laws are examples only, with invented / suggested names:

Throw Quick-Return 1

Throw Quick-Return 2

Throw Rapid-Return 1

Throw Rapid-Return 2


Asymmetric Throw motion-law

A classic Asymmetric motion-law is one in which the acceleration phase of a Rise or Return segment has a different period to that of the deceleration

In addition to the design options listed above, you can also design an Asymmetric Throw motion if which the period of the Rise is different from the Return.