Difference between revisions of "EM Tracker Coil Characterization"
| Line 4: | Line 4: | ||
In 6DOF trackers, the coils must be precisely characterized for their electromagnetic properties: gains, non-orthogonalities, non-concentricities, and finite-size effects. Since characterization is measuring electromagnetic properties, the point set chosen should make electromagnetic sense rather than mechanical sense. | In 6DOF trackers, the coils must be precisely characterized for their electromagnetic properties: gains, non-orthogonalities, non-concentricities, and finite-size effects. Since characterization is measuring electromagnetic properties, the point set chosen should make electromagnetic sense rather than mechanical sense. | ||
| + | |||
| + | The important electromagnetic property, is the boundary-condition property: If we know the magnetic field on the plane of the working volume closest to the transmitter, we can calculate the field elsewhere in the working volume. | ||
Revision as of 21:08, 9 January 2017
Home < EM Tracker Coil CharacterizationEM Tracker Coil Characterization
When we test a tracker for accuracy, we generally check using point sets that make mechanical sense. For example, we may use a 3D robot to move the receiver all over the working volume (also called the motion box).
In 6DOF trackers, the coils must be precisely characterized for their electromagnetic properties: gains, non-orthogonalities, non-concentricities, and finite-size effects. Since characterization is measuring electromagnetic properties, the point set chosen should make electromagnetic sense rather than mechanical sense.
The important electromagnetic property, is the boundary-condition property: If we know the magnetic field on the plane of the working volume closest to the transmitter, we can calculate the field elsewhere in the working volume.
