ABB SmarTac User Manual

4.5 Exercise 3: using SmarTac for multi-dimensional searching
4.5.1 Introduction
About multi-dimensional search
As seen in exercise 2 (Exercise 2: one-dimensional search on page 42), a
one-dimensional search will determine where a weld seam is if it is constrained to
move in only one direction. In some cases this is adequate. More likely, though, a
two or three-dimensional search is required. A two-dimensional search would
provide information about where a plate is located on a table, for example. A
three-dimensional search would also determine how high the table surface was.
Limitations for single and multi-dimensional searching
In example 2 you may have noticed that if the plate was rotated when moved, the
displacement frame would not compensate for the rotation. This is the limitation
of single and multi-dimensional searching. These search techniques are relatively
easy to master and, despite the limitation, provide accurate search information
about the weld seam when used correctly.
To search a part in more than one direction, a combination of one-dimensional
searches is used and the result of each search is added together. Exercise 3
demonstrates this for a two-dimensional search.
Application manual - SmarTac 49
3HAC024845-001 Revision: A
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4 User's guide
4.5.1 Introduction

ABB SmarTac Specifications

General

Brand	ABB
Model	SmarTac
Category	Accessories
Language	English