航空发动机伺服双通道协同控制技术研究

Research on Dual Channel Cooperative Control of Aeroengine Hydraulic Control Loop

针对常规航空发动机伺服控制方法存在的不足,提出了一种采用双通道协同工作提高故障容错能力及伺服控制性能的方法。该方法通过余度管理算法对传感器信号进行有效融合,提高故障容错能力;并采用双通道同时工作的方式,提高通道切换速度,降低通道切换扰动。全数字仿真和台架试验验证结果均表明,该方法显著降低了通道切换对伺服控制回路带来的扰动,提高了故障容错能力,对提高航空发动机数字电子控制系统的工作性能和可靠性具有重要作用。

A method for improving fault-tolerant capability and hydraulic control performance by using dual channel cooperative control method is proposed.This method improves ault-tolerant capability by selecting sensor signals through redundant management.Besides,by using the way of dual channel cooperate,this method can enhance the speed and reduce the disturbance of channel switching.The results of all-digital simulation and aeroengine bench test show that the disturbance of hydraulic control loop channel switching is reduced significantly and the ault-tolerant capability is improved.Therefore,it is of great significance to improve the performance and reliability of the aeroengine digital control system.