涡桨发动机螺旋桨建模与控制系统设计研究

Research on Modeling and Control System Designing of  Turboprop Engine Propeller[HS)]

摘要:

针对涡桨发动机全权限数字电子控制技术对螺旋桨控制的计算精度和实时性要求,建立了某型发动机螺旋桨实时模型并设计了其控制系统;基于最小二乘辨识方法,应用试车数据建立了螺旋桨实时动态数学模型；采用前向拉力控制模式,设计了螺旋桨转速控制系统,并对模型和控制系统进行仿真验证;结果表明,辨识所得模型满足计算精度和实时性的要求,控制系统能够保证螺旋桨在各个工作状态下安全稳定工作、满足转速控制的需求,具有良好的工程应用价值。

Abstract:

The propeller real-time model and control system were established to satisfy the calculation accuracy and real-time request by turboprop engine FADAC. According to aero-engine test data and computational properties of propeller, model foundation of the high precision real-time propeller was achieved by using the least square identification theory. Appling forward-tension control mode, the propeller rotating speed control system was designed and verified. The results indicated that the modal made a guarantee of propellers working credibility in overall conditions, met the demand of propeller control system and had good engineering application value.