With the development of new-generation large transport aircraft and carrier-based aircraft, the landing gear system has become a critical subsystem for safe takeoff and landing, with increasing requirements for overall performance and reliability. Traditional development methods for landing gear systems involve long cycles, repeated physical testing, and high costs, making them less suitable for modern aerospace programs. The Landing Gear Controller Simulation Test Solution, based on Hardware-in-the-Loop (HIL) simulation technology, replaces multiple physical repetitive tests with computer-based simulation and analysis. This approach not only reduces testing costs but also accelerates development while achieving near-realistic verification, providing reliable data and validation for landing gear system control logic.

From a business perspective, this solution enables comprehensive simulation verification of landing gear controller parameters, design logic, and operational performance. It allows testing of C-type and S-type components, providing a solid foundation for controller optimization. During the design phase, control logic and laws can be optimized, and further refined during HIL simulation with real landing gear control valves and actuators, shortening development cycles and enhancing flight test safety.

Built on the HRT HIL simulation platform, the solution supports signal interfaces matching landing gear requirements such as RVDT and LVDT, meeting diverse testing needs. The platform provides advanced model-based design tools, supporting Matlab/Simulink and AMESim environments for landing gear and integrated system modeling, automatically generating embedded target code, freeing users from manual coding and allowing them to focus on model design and tuning. By combining the VxWorks real-time operating system with high-performance X86 processors, the system achieves a minimum 10ms simulation step for AMESim-based landing gear actuator models. Comprehensive simulation management features include graphical monitoring, online parameter adjustments, and real-time data storage. The platform is highly versatile, supporting future landing gear controller models.

Functionally, the system enables rapid prototyping of landing gear control systems and real-time simulation of subsystems including anti-skid brake simulation, nose wheel steering simulation, landing gear extension/retraction simulation, and distributed co-simulation with aircraft flight dynamics models. It simulates all phases of aircraft operation—takeoff, landing, and ground taxiing—allowing comprehensive parameter verification. Unit tests for landing gear controllers cover BIT function checks, communication checks, 3-second speed limitation verification, zero position adjustment, control status verification, and control law checks.

This solution is applicable to aircraft overall design departments for comprehensive landing gear control system verification and also supports subsystem manufacturers for R&D validation and final acceptance testing, ensuring efficient, safe, and reliable development and verification of landing gear controllers.