Heading Control System
Heading Control System
Heading Control System
The Mega-Guard Heading Control System (HCS) automatically controls vessel's heading by calculating and providing a setpoint for the rudder. The Heading Control System fulfills the rules of classification societies and wheelmark. The reliable autopilot supports single rudders and twin independent rudders.
The Heading Control System includes the following modes of operation:
- HCS Control
- Track Control
- Turn by Radius or Rate Of Turn
The HCS interfaces to various NMEA compatible sensors according one
of the following standards:
- NMEA-0183 over serial line
- NMEA over Ethernet
Sensors provide the HCS with heading, position, speed, wind and draft data. In addition NMEA input/outputs are available for ECDIS and VDR.
The Mega-Guard HCS consists of the following items:
- Heading Control Panel for flush panel mounting in bridge console
- NMEA Controller for din-rail mounting inside bridge console
The Heading Control Panel is operated through a user friendly Heading Knob and 5" touchscreen for intuitive operation and monitoring. This Panel is available in two different versions, a panel with a foil front for commercial and navy ships and a panel with glass front for mega yachts. The Heading Control Panel transmits the rudder setpoint and receives the rudder position feedback to/from the Mega-Guard Steering Control System through the redundant Ethernet network.
The NMEA Controller is DIN rail mounted inside bridge console and is equipped with NMEA-0183 inputs and outputs. In addition, hardwired I/O signals such as rudder setpoint and feedback can be connected to this NMEA Controller in case no Mega-Guard Steering Control System is applied. The NMEA Controller can be omitted in case NMEA sensors are interfaced through the Mega-Guard Integrated Navigation System.
The controller of the Heading Control Panel is equipped with a self-learning and adaptive software algorithm for accurate course keeping. The controller dynamically adjusts and stores the control parameters taking into account vessel speed, draft and wind conditions. An extended Kalman filter is applied to filter out wave induced yaw motions. In this way rudder movements are minimized which results in less wear and tear and reduced fuel consumption. The HCS Control function can be set to either Auto Heading or Auto Course mode through touchscreen buttons. In Auto course mode the Heading Control Panel steers against a set course over ground. This results in automatic compensation of wind and/or wave induced drift by the Heading Control Panel. The Mega-Guard HCS can be connected to Mega-GUARD INS or a separate ECDIS or ECS for automatic track steering, taking into account the
set cross track error, the turn radius and rate of turn.
The HCS Heading Control System is applied in all type of ships. Three market segments are distinguished:
- Commercial ships
- Mega yachts
- Navy ships
The Heading Control Panel is supplied in a highly esthetic foil front with integrated pushbuttons and stylish Heading Knob with push function to accept the set heading. The Steering Operator Panel has identical styling and dimensions (DIN 144x144mm). In addition, the Full Follow Up and Non Follow Up steering panels are half size (DIN 72x144mm) and fit perfectly next to the Heading Control Panel and the Steering Operator Panel.
The Mega-Guard HCS can also be extended with Position Hold functionality in case all thrusters are controlled by Mega-Guard propulsion, steering and thruster control systems. The dynamic positioning controller of the Heading Control Panel accurately calculates thrust and steering setpoints of all thrusters based upon external induced forces of waves, wind and current and measured data from position, heading and wind sensors. User friendly heading adjustments can be made with the Heading Knob and a position transfer step can be induced by touching the arrows on the touchscreen in ahead, astern, port and/or starboard direction.
Steering Control System
The Mega-Guard Steering Control System (SCS) automatically controls rudder position to a given setpoint as received from the Heading Control System or from the Full Follow Up (FFU) steering panels. The SCS supports back-up and independent operation of the rudder actuators through the Non Follow Up (NFU) Joystick panels as well. In addition, it includes an independent rudder position indication system.
The following rudder configurationsare supported:
- single rudder with dual actuator
- dual linked rudder with dual actuator
- dual rudder with dual actuator
- dual rudder with quad actuator
The following rudder actuators are supported:
- bang bang type
- proportional valve type
The Mega-Guard SCS consists of the following items:
- Steering Operator Panels for flush panel mounting in bridge console
- Steering Indication Panels for flush panel mounting in overhead console`and/or wings
- Full Follow Up (FFU) Panels ; single or dual mounted on bridge
- Non Follow Up (NFU) Panels ; single or dual mounted on bridge
- Steering Controllers ; mounted in cabinet in steering room or bridge
The Steering Operator and Indication Panels and the Steering Controllers are interconnected by redundant Ethernet network for reliable operation of the rudder actuators and minimizing cabling. In addition, the Mega-Guard Heading Control System is connected to the redundant Ethernet network.
The Steering Operator Panel indicates rudder position and indication of mode of operation: HCS, FFU or NFU control. In addition, the hydraulic or electric pumps for the steering actuators can be operated from the Steering Operator Panel.
FFU panels are either in single or dual configuration and are available as follows:
- external steering wheel
- built-in mini steering wheel
- joystick (proportional)
The panel includes a Take Over pushbutton with lamp indicator.
NFU panels are either in single or dual configuration and are available as follows:
- joystick (moveable to portside and starboard side direction )
- pushbuttons (To Port and To Starboard)
The panel includes a Take Over pushbutton with lamp indicator. Dual panels include dual Take Over pushbuttons for independent take-over of port side rudder and starboard side rudder.
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