The New Cpu In The Aero-engine Controller Study

It's a trend to use Full Authority Digital Engine Control in aero-engine control. Digital controller is the key part of control system. For pursuing high-quality controlling and more complex control algorithm, it's necessary to find a new and high-quality CPU controller. This thesis deals with software and hardware design of aero-engine digital controller and it is also a part of 'research of new concept aero-engine control technology' supported by 614 institute. By studying aero-engine, combined with domestic and foreign research results and the trend of development in the world, comparing all kinds of CPUs, A 32-bit PowerPC architecture MCU, MPC5554 is at last chosen. It is also the first time to use this CPU in the history of aero -engine control system in our country.Aimed at the functional demands of aero-engine control, MPC5554 is used as CPU of microcontroller. It improves the speed of system and enhances the integration of system, and it makes the controller much smaller. Meantime, the CPU can adapt to worse surroundings.Certain aero-engine is chosen as object, it has much signal and the signal is complex. In this situation, all signal is classified, and several independent modules are designed in hardware design, so the system has consecution, interconvertion and maintenance. After this, the whole controller is designed. Depending on the demands, Power module, CPU module and switch module are designed, and the reliability, the electromagnetic compatibility as well as the anti-jamming has carried on the design. Then the core module, CPU module and switch module are designed, and process circuits of switch, frequency and simulation signal are finished. The communication circuit is also designed.Using CodeWarrior development environment, software in the bottom is coded. eADC module and eMIOS module are studied and developed, and collection of switch signal, frequency signal and simulation signal is realized.In the end, by using C++ Builder 6.0, an interface is developed. It is used for data collection and sending, communicated by RS-232 and displayed by PC. It is used to test the system.With the success of this design, aero-engine control technology of our country will be moved forward.