基于双DSP的航空发动机电子控制器设计及仿真验证

Design and simulation of aero-engines control system based on dual-DSP

针对航空发动机控制系统的高可靠性要求,设计了一种基于双DSP的航空发动机容错电子控制器。在本系统中两个数字信号处理器(DSP)彼此独立运行,采用硬件判决模块配合DSP软件进行硬件和软件故障的诊断,再根据硬件判决模块的结果由仲裁切换模块来进行仲裁,并完成输出切换和报警功能,从而实现容错控制,显著提高了控制系统的可靠性。并通过半物理仿真实验验证了系统的可行性。

For the high requirements of reliability of aero-engines control system, a kind of fault-tolerant control system based on dual-DSP is designed. Among this system, two DSP run independently each other, hardware circuit module and software which in each DSP cooperate to diagnose errors which caused by hardware or software of the control system, according as the result of the hardware circuit module,the switchover will always choose the right DSP output data or give an alarm,so the system has the function of fault-tolerance, and the reliability is greatly improved. A matter-in-loop simulation system is used to validate the feasibility of the control system.