Design & Implementation Of Smart Actuators Of Distributed Control Systems For Aero-Engines

Distributed control systems lead the way for the development of aero-engine control; CAN (Controller Area Network), an advanced serial communication protocol, which efficiently supports distributed real-time control, is a promising fieldbus suitable for the aero-engine distributed control systems. This paper focusses on three smart actuators, among which the communications are implemented via CAN bus, in order to construct a semi-phisical simulation platform for the aero-engine distributed control system.Three smart actuators are designed and inplemented in the laboratory environm- ent, using TI's digital signal processor TMS320F2812. The actuators are nozzle vetor controller, rotational measuring valve controller and vane controller. The smart actuators are capable of data collection, self-calibration, power-on self-test and local close-loop control, etc. A simplified mathematical model for the vector nozzle is constructed, and the relationship between the state of vector nozzle and actuator cylinders'position is obtained. The effect of the position controller is tested. The work done in this paper serves as a foundation for the construction of the semi-phisical simulation platform and further study on aero-engine distributed control systems.