Research On Distributed Aeroengine Control Based On DSP And CAN Bus

With the developing direction of miniaturization, integration, high performance, and high reliability, distributed control is a promising kind of aeroengine control. Because of their advantages, CAN bus becomes the most capable bus, and DSP becomes one of the best choices of smart device's processor. For the high dependability requirement of position control of aeroengine distributed control system, A dual-redundancy smart position controller is designed. It forms two channels with two DSPs, two power buses, two CAN buses, and etc. The two channels share data with dual-port RAM. They detect and bakeup data each other, improving the dependability observably. Dual CAN buses communication precept is proposed for redundancy distributed control system's buildup. A distributed aeroengine rotor speed control system is composed, with the unattached smart devices, and soft of the smart devices was designed. With an engine model replacing the real one, a distributed aeroengine rotor speed control simulation system was built. The rotor speed control experiments done on the simulation system show that the distributed control can be used at aeroengine rotor speed. The embedded RTOS μC/OS-II was repot to EEC controller for the distributed rotor speed control system with the processor of 2407A.