Aster Review
FIELD EDITION / 8C066C

The reference / Mechanical motion

Motion can be described through position, velocity and the constraints of the mechanism.

0102030405REFERENCE GEOMETRY

Illustrative diagram; not a measured or manufacturing drawing.

04Reference stages
3Sections in this edition
SIUnit convention

Reference specification

Illustrative reference series
RecordCategoryNormalized valueRole
R-001Geometry79Reference
R-002Surface88Comparison
R-003Assembly49Control
R-004Geometry80Reference
R-005Surface55Comparison
R-006Assembly61Control
Reference
A stated basis for comparing observations.
Resolution
The smallest change represented by a measuring system.
Repeatability
The consistency of observations under the same conditions.
Boundary
The conditions and limits chosen for a study.
  1. Define
    State the reference and the purpose of the comparison.
  2. Observe
    Friction converts mechanical energy into heat.
  3. Record
    Keep the conditions and observations together.
  4. Review
    Separate the result from the assumptions used to interpret it.
Reference note

A reference frame must be defined before comparing motion.