基于相似参数的加速供油规律反设计方法研究
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摘要
为了推广数字电子控制在发动机控制系统中的应用,利用原液压机械控制装置具备的加减速功能进行供油规律的反设计具有重要意义。基于相似理论,提出了以高低压压气机进口总温、高压压气机出口总压和高压转速为函数参量的加速供油规律;其次考虑到温度传感器测量难、响应慢的实际问题,提出了一种仅利用高低压压气机出口总压和高压转速为函数参量的基于发动机加速试验数据反设计加速供油规律的方法;进一步提出一种仅利用低压压气机进口总压、高压压气机出口总压和高压转速的供油规律的设计方法。两种加减速供油规律仿真曲线与地面、高空加减速试验数据对比表明,加速过程高压转子转速相对误差小于2%,减速过程高压转子转速相对误差小于3%。
In order to popularize the application of digital electronic regulator in engine control system, it is of great significance to do reverse design for fuel supply law by original hydraulic mechanical control equipment with acceleration and deceleration function. Based on similarity principle, the fuel supply law is put forward,which includes total temperature in the inlet of low pressure compressor(LPC) and high pressure compressor(HPC), total pressure in the outlet of HPC and high pressure rotor speed(n_2). Considering temperature sensors slow response and difficulties in measuring, a reverse design method according to the engine test data is presented, which involves pressure in the outlet of LPC and HPC and n_2. Further, the design method involving pressure in the inlet of LPC and the outlet of HPC and n_2 is proposed. The results of ground and altitude simulation show that n_2· relative error is under 2% for acceleration and under 3% for deceleration.
In order to popularize the application of digital electronic regulator in engine control system, it is of great significance to do reverse design for fuel supply law by original hydraulic mechanical control equipment with acceleration and deceleration function. Based on similarity principle, the fuel supply law is put forward,which includes total temperature in the inlet of low pressure compressor(LPC) and high pressure compressor(HPC), total pressure in the outlet of HPC and high pressure rotor speed(n_2). Considering temperature sensors slow response and difficulties in measuring, a reverse design method according to the engine test data is presented, which involves pressure in the outlet of LPC and HPC and n_2. Further, the design method involving pressure in the inlet of LPC and the outlet of HPC and n_2 is proposed. The results of ground and altitude simulation show that n_2· relative error is under 2% for acceleration and under 3% for deceleration.
引文
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[2]Fred Teren.Minimum-Time Acceleration of Aircraft Turbofan Engines by Using an Algorithm Based on Nonlinear Programming[R].NASA-TM-73741,1977.
[3]Jaw L C,Garg S.Propulsion Control Technology Development in the United States.A Historical Perspective[R].NASA/TM-2005-213978.
[4]Jaw L C,Mattingly J D.Aircraft Engine Controls:Design,System Analysis,and Health Monitoring[M].Reston:AIAA Press,2009.
[5]陈玉春,刘振德,袁宁,等.一种涡轮发动机加速控制规律设计的新方法[J].航空学报,2008,29(2):327-332.
[6]韩文俊,李家瑞,王军,等.基于实时模型的涡扇发动机加速供油规律设计方法[J].航空发动机,2015,41(2):1-5.
[7]谢光华,牛天华,王亿军,等.某型弹用涡喷发动机启动加速控制规律设计[J].推进技术,2003,24(3):232-235.(XIE Guang-hua,NIU Tian-hua,WANGYi-jun,et al.Starting and Acceleration Control Law Design for a Missile Turbojet Engine[J].Journal of Propulsion Technology,2003,24(3):232-235.)
[8]丁凯锋,樊思齐.变几何涡扇发动机加速控制规律优化设计[J].推进技术,1999,20(2):17-20.(DINGKai-feng,FAN Si-qi.Optimal Design of Accelerating Control Law for Variable Geometry Turbofan Engine[J].Journal of Propulsion Technology,1999,20(2):17-20.)
[9]何黎明,樊丁.利用SQP控制涡扇发动机加速过程的多目标最优化研究[J].航空动力学报,2001,16(2):179-181.
[10]时瑞军,樊思齐.基于遗传算法的涡扇发动机多变量加速寻优控制[J].推进技术,2003,24(4):357-360.(SHI Rui-jun,FAN Si-qi.Optimal Acceleration Control of Turbofan Engine with Genetic Algorithm[J].Journal of Propulsion Technology,2003,24(4):357-360.)
[11]Kong Xiangxing,Wang Xi,Tan Daoliang,et al.An Extrapolation Approach for Aeroengine’s Transient Control Law Design[J].Chinese Journal of Aeronautics,2013,26(5):1106-1113.
[12]Yang Shu-bo,Wang Xi.A Comparative Study on N-DOT Acceleration Technique[R].ASME 2016-GT-57341.
[13]郑铁军,王曦,罗秀芹,等.航空发动机控制逻辑设计[J].推进技术,2007,28(3):317-321.(ZHENGTie-jun,WANG Xi,LUO Xiu-qin,et al.Aeroengine Control Logic Design[J].Journal of Propulsion Technology,2007,28(3):317-321.)
[14]樊思齐.航空发动机控制[M].西安:西北工业大学出版社,2008.
[15]廉筱纯,吴虎.航空发动机原理[M].西安:西北工业大学出版社,2005.
[16]彭泽琰,刘刚,桂幸民,等.航空燃气轮机原理[M].北京:国防工业出版社,2008.