一种涡扇发动机加减速转速变化率闭环控制技术

doi:10.13675/j.cnki.tjjs.190273

推进技术 ›› 2020, Vol. 41 ›› Issue (6): 1404-1410.DOI: 10.13675/j.cnki.tjjs.190273

一种涡扇发动机加减速转速变化率闭环控制技术

姚太克¹，闻伟¹，杨刚¹，王亚妮¹，朱爱峰¹

中国航发控制系统研究所，江苏无锡 214063

发布日期:2021-08-15

Control Law Design for N-dot Closed Control Loop for Acceleration and Deceleration Process in Turbofan Engine

AECC Aero Engine Control System Institute, Wuxi 214063, China

Published:2021-08-15

摘要/Abstract

摘要： 针对涡扇发动机加减速的特点和控制需求，在对比现有控制算法的基础上提出一种新的转速变化率（N-dot）闭环控制技术。通过引入积分补偿，消除了原理性稳态误差，且控制参数机理清晰，易于设计，具备较高的工程应用价值。针对控制回路切换带来积分饱和的技术难点，设计工程实用的输出回归抗积分饱和方法，实现与其它控制器协调工作。基于涡扇发动机开展了Matlab桌面仿真研究和台架试验验证，结果表明，本文提出的控制技术能够取得满意的控制效果：N-dot反馈能够很好跟随N-dot期望指令，跟随误差在当前期望值的±10%以内，控制算法对噪声不敏感，对于涡扇发动机加减速过程多控制回路切换场景，不存在回路干扰和积分饱和现象。

关键词: 涡扇发动机;转速变化率闭环控制;输出回归方法;控制规律

Abstract: Focused on the N-dot closed control loop design for acceleration and deceleration process in turbofan engines, a novel control law is put forward after the analysis of the existent control laws. The additional integral is put forward to eliminate the steady-state error, and the mechanism of control parameters is clear and can be designed more easily. For the integral wind-up issue caused by switching among multiple control loops, a practical anti-windup back-calculation method is introduced to achieve coordinative operation with other controllers. The control law is simulated in Matlab and verified in engine bench test based on a turbofan engine. The results show that the novel control law has satisfactory performances: the actual N -dot value follows the demand N -dot value at a desired level and the error is within ±10% of the current N -dot demand, the control law is not sensitive to noise, and performs no switching interference and no integral windup in the multiple control loops switching in acceleration and deceleration process in turbofan engine.

Key words: Turbofan engine;N-dot closed control loop;Back-calculation method;Control law

姚太克，闻伟，杨刚，王亚妮，朱爱峰. 一种涡扇发动机加减速转速变化率闭环控制技术[J]. 推进技术, 2020, 41(6): 1404-1410.

YAO Tai-ke¹, WEN Wei¹, YANG Gang¹, WANG Ya-ni¹, ZHU Ai-feng¹. Control Law Design for N-dot Closed Control Loop for Acceleration and Deceleration Process in Turbofan Engine[J]. Journal of Propulsion Technology, 2020, 41(6): 1404-1410.

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一种涡扇发动机加减速转速变化率闭环控制技术

Control Law Design for N-dot Closed Control Loop for Acceleration and Deceleration Process in Turbofan Engine

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