Constant-Velocity | Two Position

The Constant-Velocity motion-law is defined by its Velocity.

The Position at the end of a segment that is defined by a Constant-Velocity motion-law is a function of the Start-Position and the Segment-Width. However, it is often useful to enter the Start Position and End-Position, and the motion to be constant-velocity, also. You must use the Flexible-Polynomial to do this 'motion-law'.


Flexible-Polynomial : Two Position | Constant-Velocity

Motion-Law-2Position-CV

SEGMENT EDITOR: Control-Buttons for a 'Two Position | Constant-Velocity motion-law.

SEGMENT EDITOR: Control-Buttons for a 'Two Position | Constant-Velocity motion-law.

Step 1: Make sure the motion-law is a Flexible-Polynomial motion-law in the Motion-Law Selector.

Step 2: Deselect ALL 'Flow' Control-Buttons

Step 3: Deselect Start Velocity, Start Acceleration, and Start Jerk Control-Buttons

Step 4: Deselect End Velocity, End Acceleration, and End Jerk Control-Buttons

Step 5: Select the Start-Position and End Position Control-Buttons

Step 6: Enter the Start and End-Positions

Step 7: Enter the correct X-axis values.


Notes: You must enter the Velocity at the 'End of the Previous-Segment' and at the Start of the Next-Segment to make sure there is Velocity continuity in the motion.

The Acceleration and Jerk Values at the start and end of the segment are zero.

Constant-Velocity: 'Conveyor' Motion-Law

Motion-Law-2Position-CV2

SEGMENT EDITOR: Control-Buttons for a 'Two Position | Constant-Velocity motion-law.

SEGMENT EDITOR: Control-Buttons for a 'Two Position | Constant-Velocity motion-law.

This a single segment for one machine cycle. This motion might be used for a Conveyor.

The Control-Button Settings define the Start-Position and End-Position.


Note: When you have a single segment and need it to be a constant velocity, you can also use a Gearing FB, with the Rational Gear Ratio parameters.

Enter 360 as the Drive Pulley parameter, and, in the Driven-Pulley, enter the End-Position.

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