Seakeeper 5 GYRO, Руководство по эксплуатации

Страница: 6 / 39

OPERATION
MANUAL
Product: Document #: Rev: Page:
SEAKEEPER 5 GYRO 90246 4 2 of 8
Section 1: SYSTEM OVERVIEW
The gyro’s gimbal angle and the gyro’s rate of rotation about the gimbal axis (termed precession rate)
play an important role in its operation. These parameters are illustrated in Figure 2. At zero degree
gimbal angle, the gyro is vertical; it can precess a maximum of +/- 70 degrees about this position. The
amount of torque that the gyro exerts on a boat’s hull to counter the wave induced roll is directly
proportional to the precession rate. The further the gyro is from vertical (zero degrees) the lower the
anti-roll torque. The vertical arrows in Figure 2 illustrate the direction of the forces that the gyro exerts
on the boat’s hull to damp roll motion.
FIGURE 2 – GYRO PRECESSION
Seakeeper gyro precession is actively controlled by an electronic controller and a hydraulic brake
throughout each roll cycle so the gyro supplies the maximum anti-roll torque and does not make
mechanical contact with hard stops that limit the maximum gimbal angle travel to +/- 70
o
.