某型航空涡轴发动机起动过程控制研究

Study on Start Process Control of X-type Turbo-shaft Engine

摘要:

针对涡轴发动机起动过程复杂的特点,提出了“跟踪-微分器”的二阶动态结构来对其加速过程进行控制；首先,在对涡轴发动机起动过程分析的基础上,给出了其起动控制逻辑；其次,通过对起动过程主燃油供油系统规律分析,给出了起动过程的供油计划,并采用“跟踪-微分器”的二阶动态结构来求取转速加速度；最后,对所研究的涡轴发动机起动过程控制规律进行了仿真验证；仿真结果表明,所设计的过程控制方法满足起动时限的要求,且不超温超转,达到了系统设计要求。

Abstract:

Aimed at the turbo-shaft engine starting process, the “tracking-differentiator” is given for the process control. First of all, based on the analysis of turbo shaft engine starting, the starting control logic is given. Secondly, through the analysis of the starting process of main fuel supply system rule, supply plan starting process are given, and the “tracking-differentiator” based on two order dynamic structure is used to calculate the speed acceleration. Finally, the starting process control law is simulated to verify the turbo-shaft engine starting process research. The simulation results show that, process control method can satisfy the design requirements of the starting time limit, and is not overheating and over speeding, which reaches the design requirements of the system.