With the continuous shortening of satellite development cycles and increasing demands for high-precision attitude control and reliability, traditional offline simulation methods are no longer sufficient to meet modern satellite development requirements for real-time verification. The Satellite Attitude Control Real-Time Simulation Solution leverages hardware-in-the-loop (HIL) simulation technology to replicate in-orbit satellite dynamics and attitude control systems in a laboratory environment, providing reliable support for system optimization and performance assessment.

The system consists of two core subsystems: the onboard computer simulation system and the external HIL simulation environment. The onboard computer simulation system models the AOCC software using Simulink to perform attitude and orbit control calculations. The external HIL simulation environment replicates all external functions beyond the onboard computer, including sensor signals, actuator responses, satellite orbital dynamics, fault injection, and boundary conditions. The closed-loop interaction between these subsystems enables a complete reproduction of satellite in-orbit motion and control logic, allowing real-time verification of onboard computer software and hardware interfaces.

In terms of operational requirements, the platform enables rapid prototyping of onboard computer simulations and provides a real-time environment for verifying attitude control algorithms and interface performance. The system also supports fault diagnosis verification through configurable external interface libraries and real-time fault injection modules, allowing users to test and optimize system responses under abnormal conditions.

A key advantage of this solution is its HRT-based HIL architecture combined with the VxWorks real-time operating system and high-performance PowerPC processors, achieving a 10ms control loop update rate. Users can design models in Simulink while the system automatically generates target code, reducing manual coding effort. The platform also provides a graphical monitoring interface, online parameter adjustment, and real-time data storage, ensuring process control and reliability. Additionally, intelligent serial interface cards with VxWorks drivers enable seamless integration between the external HIL environment and the onboard computer.

Functionally, the system can process remote control commands in real-time, compute attitude and orbit control outputs, and drive thrusters and actuators accordingly. The external simulation environment monitors satellite attitude and orbital changes and feeds measurement data back into the kinematic and dynamic models to achieve closed-loop control. The platform supports rapid prototyping, HIL simulation, and testing of multiple satellite models, providing an efficient, repeatable, and reliable verification method for satellite development.

In application, this solution serves satellite design and development organizations, offering support throughout all stages of attitude control system development, including rapid prototyping, HIL validation, and fault injection testing. The platform allows development teams to fully verify satellite attitude and orbit control system performance in a ground-based environment, accelerating development and enhancing system reliability and safety.

In summary, the Satellite Attitude Control Real-Time Simulation Solution provides a high-precision, reliable, and extensible experimental platform for the development and verification of satellite control systems, making it an indispensable tool in modern satellite research and development.