Motion-Dimension FB

see Add Motion-Dimension FB

Motion-Dimension FB

A Motion-Dimension FB identifies a Part you want to move with a motion, which we call a Motion-Part.

A Motion-Dimension FB may specify the:

Angle of a Rocker

- or -

Position of a Slider

Edit the Motion-Dimension FB

There are two different Motion-Dimension FB icons in the graphic-area  that are different to the icon that is in the Kinematics FB toolbar.

The FB icons in the graphic-area are:


Motion-Dimension FB for a Rocker


Motion-Dimension FB for a Slider

1.Double-click the Motion-Dimension FB in the graphic-area or Assembly-Tree

- or -

Motion-Dimension FB dialog-box


1s-red Base-Value: in the dialog to the left the Base-Value = 75

This is the 'constant' contribution to the Motion-Dimension

2s Motion-Value: (read-only) in the dialog the Motion-Value = 9.159921

The 'motion' contribution to the Motion-Dimension.

It is the motion-value at the input-connector to the Motion-Dimension FB.

2s Base-Value + Motion-Value

∑ Base-Value + Motion-Value = Motion-Dimension

∑ 74 + 91.559104 = 84.159921


Units are determined by the data-type at the input-connector


5s Negate Motion-Values:

Positive Motion-Values  - Motion-Value × 1 , default
Negative Motion-Values - Motion-Value × –1

6s Negate Base-Values

Positive Base-Value - Base-Value × 1, default
Negative Base-Values  - Base-Value × –1


The Positive direction of the Motion-Dimension:

Rocker - counter-clockwise angle of the the Motion-Part

Slider  - direction of arrowhead on Slide-Joint  - See Positive Direction of Sliders

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