Documentation HG G-73650ZD | English, Revision 05 | Date: 09.03.2017 | www.goetting-agv.com
20
Chapter 2: Basic Principles of Track Guidance
Note
Rule of thumb: A 90° curve must consist of at least seven support points. The maximum
drivable velocity is 0.5 support points every 10 ms. 0.5 support points every 10 ms gives 1
support point every 20 ms, i.e. at a distance of 0.1 m between the support points the max-
imum speed is 5 m/s.
Note
The start point and the end point of a segment may not have the same coordinates!
2.5.2 The Segment File
All segments and the associated support points are stored in the segment file. Below the
file structure is shown. Later on there‘s a description of how to create it.
2.5.2.1 Structure of the Segment File
Each line of the file represents one support point. It contains the segment number, the sup-
port point number, the support point‘s coordinates, two velocities, one attribute 32 bit, one
attribute 16 bit (not yet used) and the vehicle orientation. The columns are separated by a
semi colon. In Microsoft® Excel® this can be done, e.g, by saving the file Format
CSV (MS-
DOS®)
. In a text editor the file looks as follows:
3;0;10000;2000;150;200;0x00000001;0;9000
3;1;10000;1500;150;200;0x00000000;0;9000
3;2;10000;1000;101;200;0x00000000;0;9000
3;3;10000;500;51;200;0x00000000;0;9000
3;4;10000;0;1;200;0x00000002;0;9000
4;0;10000;0;150;200;0x00000001;0;9000
4;1;10000;500;150;200;0x00000000;0;9000
4;2;10000;1000;101;200;0x00000000;0;9000
4;3;10000;1500;51;200;0x00000000;0;9000
4;4;10000;2000;1;200;0x00000002;0;9000
Figure 12
Example of a segment file with support points
Seg-
ment
No.
Point
No.
X Pos. Y Pos.
Speed
End
Speed
Next
Attribute 32 Bit
Attribute
16 Bit
Heading
3
0
10000 2000
150
200
0x00000001
0
9000
3
1
10000 1500
150
200
0x00000000
0
9000
3
2
10000 1000
101
200
0x00000000
0
9000
3
3
10000 500
51
200
0x00000000
0
9000
3
4
10000 0
1
200
0x00000002
0
9000
4
0
10000 0
150
200
0x00000001
0
9000
4
1
10000 500
150
200
0x00000000
0
9000
4
2
10000 1000
101
200
0x00000000
0
9000
4
3
10000 1500
51
200
0x00000000
0
9000
4
4
10000 2000
1
200
0x00000002
0
9000
Table 2
Structure of a segment file with support points