Angular Acceleration Analysis

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The Angular Velocity Analysis calculates the angle between 2 vectors defined by 3 or 4 points or 1 vector defined by 2 or 1 point(s) and a plane or axis.  It then calculates the time rate of change of the angular velocity.

 

The following formula is used to calculate the angular acceleration:

Angular Velocity Frame n - Angular Velocity Frame n-DerivativeLength / Time Frame n - Frame n - DerivativeLength

 

AngleAccelerationVsTime

 

Angular Acceleration Analysis Options

 

Type of Angle

 

2 Vectors using 4 Points

2 Vectors using 3 Points

1 Vector using 2 Points

 

Project 2nd Vector into a

2D Plane

 

This will project the 3D vector into a 2D plane to create a 2nd vector.  Only available in 3D

Prject 3D Angle into a

2D Plane

 

Project 3D angle into a 2D plane to create a 2D angle

Use Origin as Point B

 

Use Origin as Point B.  This will use Origin as one of the points of the projected vector.

Calculate 2D Angle vs 2D

Axis

 

This will calculate the 2D angle between a vector and a 2D axis

Angle Range

 

Can be either -180 to +180 Degrees or 0 to 360 Degrees

Angle Units

 

Angle Units.  Can be Degrees, Radians or Gradians

Normalize Graph

 

This will calculate the average of the specified number of frames starting with frame 1 and then subtract this from every frame.  This will result in the change of motion instead of absolute motion.

Derivative Length

 

This is the number of frames that the derivative will skip over in order to create a smoothing effect.  The default is 2 meaning it will use every other frame.