基于模型系统工程的飞控半实物测试系统设计

Design of flight control Hardware in loop verification system based on model system engineering

摘要:

随着飞行器在飞行过程中遇到的各种异常情况越来越复杂,提供智能化飞控系统势在必行。建立有效的飞控智能训练与测试系统的难点在于提供基于真实业务场景下的外部激励环境。通过基于模型的系统工程设计飞控设备全流程功能,利用基于时空域的推演数字化仿真系统模拟真实业务场景下的飞行环境,并针对飞行器实际飞行技术参数进行系统建模,从而真实模拟实际业务环境。在真实业务环境下,通过基于光学成像的传感器仿真系统提供机载视角的载荷图像生成,并通过航电总线按照接口协议规范发送给飞控计算机,并接收飞控计算机返回的飞控指令参与时空域推演,从而实现基于硬件在环的飞控系统全流程训练与测试系统。试验表明,利用虚实结合的飞控半实物测试系统能够有效模拟真实业务场景下的飞行环境,并提供真实业务数据交互从而有效提高飞控系统的全业务流程功能验证效果。

Abstract:

With more and more complex various abnormal situations encountered by aircraft during flight, it is imperative to provide an intelligent flight control system. The difficulty in establishing an effective flight control intelligent training and testing system is to provide an external incentive environment based on real business scenarios. Through model based system engineering methodology, flight control system will be designed based on full functionality flow. By using a digital simulation system based on the time-space domain to simulate the flight environment in real business scenarios, and develop system modeling based on actual flight technical parameters of the aircraft, the real business environment can be truly simulated. The sensor simulation system based on optical imaging provides load image generation from the airborne perspective, with sending to the flight control computer through the avionics bus according to the interface protocol specification, and receives the flight control instructions from the flight control computer so as to participate the time-space domain deduction, thereby realizing a flight control full flow training and testing system based on hardware in the loop. The experiment shows that the flight control hardware in loop verification system combines virtual and real can effectively to simulate the flight environment in real business scenarios and provide real business data interaction, thereby effectively improving the training and testing effect of the flight control system.