Principle of rudder angle indicator and precautions for use.

The rudder angle indicator is an instrument that can indicate the actual steering angle. There are lighting equipment inside, with 350 engraved on the left and right, which can check the accuracy and sensitivity of the steering gear, and directly guide the steering during manual steering. The rudder angle indicator indicates the actual rudder angle at any time.

    The rudder angle indicator is composed of a potentiometer in the transmitter and a millivoltmeter marked as a rudder angle scale. When the rudder drives the contact of the transmitter potentiometer to rotate, the resistance of the two arms of the potentiometer changes, causing the pointer of the receiver to turn To the corresponding position, indicate the actual rudder angle. The real rotation of the rudder is fed back to the cockpit, rudder cabin and main engine cabin. The error of the electric rudder angle indicator is generally very small, as long as the error is recorded.

    But when in use, the "rudder angle indicator position" must meet the following requirements:

    1. When the main steering gear is operated by power, instructions shall be given on the bridge, and the rudder angle indication shall be independent of the control system of the steering gear;

    2. It can be seen in the steering gear room and the main engine room;

    3. Within the specified steering range, the indication error of the rudder angle indicator at a large rudder angle, the electric one should be that the error between the given rudder angle and the rudder angle feedback value should not be greater than ±10, and the central position should be in full compliance. 121. If there is any abnormal phenomenon, find out the cause and try again after eliminating it until it is normal.