Stabilization Systems

Defense and Aviation

Stabilization and Guidance Systems

We develop high-precision, gyro-stabilized laser and antenna guidance platforms and damping systems for land and sea platforms.

Our Related Defense Solutions

ARMOL Gyroscope Stabilized Laser Guidance Platform (Gimbal)

It is the stabilization gimbal product we developed for ARMOL (1.25 kW) and JARMOL (5 kW), which were developed in partnership with TÜBİTAK BİLGEM and are the first military laser weapon system to enter the inventory of the Turkish Armed Forces. This product dampens the cradle and yaw of the armored vehicle on rough terrain, ensuring that the laser beam remains locked in the UAV body. It is equipped with Robotek's own ARM4379 Embedded Control Cards.

Solved Problems and Challenges

In directed energy systems such as the National Laser Weapon (ARMOL/JARMOL), in order to destroy the target UAV/drone, the laser beam with a power of 1.25 kW to 5 kW must remain locked in a millimeter-level area without shaking. Even the slightest deviation of 1 microradian (µrad) in the angular direction will cause the laser energy to be distributed at the focal point and the target cannot be neutralized. For this purpose, multi-axis gimbal inertial stabilization has been developed.

Theoretical Background and Study

Our systems use high-precision MEMS and Fiber Optic Gyroscope (FOG) inertial measurement sensors (IMU) to determine the angular velocity and orientation of the platform in inertial space. High-frequency angular acceleration data and accelerometer data from these sensors are combined in real time with Extended Kalman Filter (EKF) algorithms. In this way, mechanical shock and vibration noises to which the platform is exposed are eliminated and clean and zero-delay positional feedback signals are obtained for the servo motor control loop.

National Yaw Damping System (Fin Stabilizers)

It is our first national hydrodynamic roll damper product, which was localized in partnership with STM and received Türk Loydu certification and is used in the frigates of the Turkish Navy. This system, which operates actively on the hull of MİLGEM corvettes and Stow Class Frigates, dynamically controls the angle of the hydraulically driven stabilizer blades and prevents roll by processing the ship's speed and sea period data through the Siemens S7 series PLC automation backbone.

Solved Problems and Challenges

Severe wave forces (rolling motion) affecting the hull of warships negatively affect the ship's gun accuracy and navigational comfort. High-speed active hydraulic/electromechanical roll stabilizing fin fins must be positioned within milliseconds in the opposite direction to the ship's roll, absorbing wave disturbances and maintaining directional stability.

Theoretical Background and Study

In order to instantly compensate for disruptive external forces, our gimbal control loops are operated at a frequency of 1000Hz (1000 times per second monitoring) and above. Angular error data is processed in DSP units on Robotek servo control cards and sent as a dynamic torque command to direct-drive brushless motors. In this way, the stabilization axis remains suspended in space with submillimeter stability, independent of the outer body.

HVLAS Visual Landing Support Platforms (SHRS & SGSI)

It is our electro-mechanical gyroscopic light platform product that we produce for helicopters on navy ships to land safely on the runway in stormy seas. Stabilized Horizon Reference System (SHRS) and Glide Angle Indicator (SGSI) subsystems ensure landing safety by constantly projecting a fixed and stable reference horizon light to the helicopter pilot, regardless of the yawing movements of the ship.

Solved Problems and Challenges

In stormy seas (Sea State 5+), for the safety of helicopters landing on warships, a visual optical landing reference beam must be projected that is perfectly aligned with the horizon and can remain stable, independent of ship roll. Instant compensation of optical projectors in the opposite direction to the ship's angular oscillations is a critical stabilization problem.

Theoretical Background and Study

In HVLAS platforms, the disruptive effects of the ship's roll, head knock and vertical acceleration movements on the optical beam cradle kinematic mechanisms are canceled by reverse kinematic compensation. The 3-axis servo mechanism, controlled by high-frequency IMU data, keeps the horizon reference beam constantly horizontal.

Product Specifications and Performance Standards

Hardware Controllers

ARM4379 & Siemens S7

Robotek design ARM4379 embedded DSP card for gimbal laser guidance systems; Industrial Siemens S7 series PLC hardware architecture for roll damping and ship automation integration.

Stabilization Stability (Sensitivity)

< 50 µrad / < 0.5° Roll

Dynamic orientation error of less than 50 microradians in laser and optical routers. The roll stabilizer blades have the capacity to dampen the yaw amplitude by over 70% in Sea State 5+ conditions.

Military Standard Compliance

MIL-STD-810G / 461G

Working in harsh military environmental conditions (humidity, salt fog, sand/dust, -40°C / +60°C temperature resistance), high shock and vibration resistance, electromagnetic compatibility certificates.

Ideal Application Areas

National Warships and Frigates: Active Fin Stabilizer systems to prevent wave roll and HVLAS integration for safe helicopter landing.

Armored Land Vehicles: Vehicle-mounted laser and electro-optical guidance systems that neutralize UAVs and asymmetric threats while underway.

Border Security and Reconnaissance Towers: Gyro-stabilized thermal and radar antenna steerers that can reliably lock on to targets at very long distances.