Application Engineering - Introduction
Creating and Controlling Motion.
This section is dedicated to providing a basic knowledge of the many facets that form a precision motion system. The section contains engineering reference material, common sense discussions, and several examples of important issues. In some cases, since "a picture is with thousand words," little text is offered. Many illustrated examples are given to illustrate the key points. In-depth analytical engineering discussions are beyond the intended scope of this Application Engineering section. The section should provide some basic motion insight and hopefully will initiate thought-provoking guidance.
Generally speaking, motion falls within the following categories:
- Rectilinear — Motion along a straight line within a 2D plane or in 3D space.
- Angular — Typically rotational motion about an axis.
- Articulated — A combination of rectilinear and angular motion.
The "Attitude"of precision motion needs to be:
- Predictable: — Where loads are supported by bearing systems which restrict the motion path. Given a motive force, loads are moved in a direction along the bearing-guided path.
- Verifiable: — A sensing system is used to measure the motion (displacement and speed).
- Controllable: — Force is varied, based upon the measured feedback, so that the motion is as desired.
Application Engineering Index
- Motion Facets and Considerations
- System Design Considerations
- Resolution
- Error Budget
- Accuracy & Repeatability
- Deflections vs. Flatness & Straightness
- Angular Error Considerations
- Additional Error Causing Conditions
- Orthogonality
- Error Mapping Considerations
- Position Feedback Exercise
- Planar Precision
- Cleanroom Criteria
- Particle Generation Overview
- Motion Profiles
- Linear Motor Considerations
- Acceleration Example
- Useful Conversions
- Glossary