Raytheon Anschütz Pilotstar D, Руководство пользователя

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PILOTSTAR D
2--40
Edition: March 13, 2009
3060.DOC012
2.4.1 Adjusting the Ship--specific Parameters
As an example, a new XTE TRIM parameter value is to be adjusted here, in the mean-
ing of: The integration time of cross track error (fast and slow).
Short information on the XTE TRIM parameter and on the situation when a new value
should be adjusted.
The XTE TRIM parameter (cross track error trim) is effective during track control only. By
means of this parameter, permanent oscillations about the tracks course can be com-
pensated. In most cases, this effect occurs in conjunction with a constant drift
(see the following illustrations).
t[min]
Drift
XTE TRIM parameter adjustment too high (overcompensation)
Heading trim
SET HEADING
The ship performs a continuous,
changing motion about the track
course.
The effect of drift is levelled unsat-
isfactorily. The track controller re-
sponse is too fast.
t[min]
Drift
Optimum XTE TRIM parameter adjustment
Heading trim
SET HEADING
The ship reacts upon the drift in an
optimum way.
The heading trim becomes stable
dependent on the drift direction.
A too high track error can be cor-
rected via the parameter
TRACK < > (see Chapter 2.3.5).
t[min]
Drift
XTE TRIM parameter adjustment too low
Heading trim
SET HEADING
The control process will be termi-
nated only when a correspondingly
long time has passed.
Track controller reaction sluggish.
Good error compensation
Less error compensation