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Properties

Joints and axes properties.

 
A rigid body selected for an axis is 'hard-attached' to the axis : if axis rotates/moves, corresponding rigid body will rotate/move too.

Every axis in a joint has its own configuration. In order to see the configuration of a particular axis, simply select it in the active view and show the Modify panel, or click directly on the axis icon from the joint's configuration panel. 

 

Configuring an axis:
 
 
 
Enable rotation limits: if this option is checked, the axis can move only between the Min and Max angles. This therefore represents a mechanical constraint:

  • Min angle: represents the minimum angle that the axis can reach.
  • Max angle: represents the maximum angle that the axis can reach.
  • Reached limit force restitution: indicates whether the contact between the axis and the upper or lower limits (Min or Max) is entirely absorbed (0.0) or rebounds(1.0).


Break at torque: if this option is checked, the axis breaks if it is subject to torque that is higher than the given value.

Break at force: if this option is checked, the axis breaks if it is subject to a force greater than the given value.

Resistive torques/forces (according to axis function: rotation or translation): if option is checked, the resistant torques/forces are enabled: 

  • Static: static resistive torque/force (axis speed = 0). Note: force/torque sensor measurements can be affected by this feature.
  • Viscous: viscous torque/force (speed dependant). Prefer choosing small values (<=1nm/rad/s or <=1nm.m/s) for avoiding joint's instabilities. Note: force/torque sensor measurements can be affected by this feature.


Note: a motor embedded on the axis can override torques/forces values. You can disable it from the motor's 'Instance Values' panel.

Enable Spring/Suspension: If this option is checked, the axis has a suspension. (Option is not available for all joints):

  • Spring constant (kp): the spring's firmness constant.
  • Damping constant (kd): the spring's absorption constant (damping).
  • Compute: Opens a tool window that computes Kp and Kd values according to specified information.

 

Documentation v4.7 (18/01/2015), Copyright (c) 2015 anyKode. All rights reserved.
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