涡轴航空发动机转速的自适应模糊控制研究

Research on Adaptive Fuzzy Control of Turboshaft Aeroengine Speed

摘要:

常规的涡轴航空发动机转速的自适应模糊控制技术,对发动机转速扭矩参数的调整不太精准,导致转速控制效果较差。因此,提出涡轴航空发动机转速的自适应模糊控制研究。对逻辑进行模糊化处理,将模糊子集的参数作为控制器的主要参数,形成涡轴航空发动机转速模糊控制器,通过模糊控制器,对变化率的调整规则进行设计,将转速波动控制在较小的范围内,并建立参数调整规则表,按照模糊自整定数值关系,对发动机转速扭矩参数进行精确调整,以该数据基础,根据隶属度函数,以相邻模态控制器的凸组合为主要模式,对相等阶次的导数进行求解,并设置两个缓冲模态,对发动机状态输出状态,进行一定程度的收敛,从而对发动机转速进行自适应模糊控制。进行仿真实验,结果表明,使用本文设计的方法,对涡轴航空发动机转速进行自适应模糊进行控制后,发动机转速波动较小,控制效果较好,具有较好的应用价值。

Abstract:

The conventional adaptive fuzzy control technology for turboshaft aviation engine speed does not accurately adjust the engine speed and torque parameters, resulting in poor speed control effect. Therefore, a study on adaptive fuzzy control of turboshaft aviation engine speed is proposed. The logic is fuzzified, and the parameters of the fuzzy subset are taken as the main parameters of the controller to form a turboshaft aeroengine speed fuzzy controller. Through the fuzzy controller, the adjustment rules of the rate of change are designed to control the speed fluctuation in a small range, and a parameter adjustment rule table is established. According to the fuzzy Self-tuning numerical relationship, the engine speed and torque parameters are accurately adjusted. Based on this data, According to the membership function, with the Convex combination of adjacent modal controllers as the main mode, the derivatives of the same order are solved, and two buffer modes are set to converge the output state of the engine state to a certain extent, so as to carry out adaptive fuzzy control of the engine speed. Simulation experiments were conducted, and the results showed that using the method designed in this paper to adaptively fuzzy control the speed of a turboshaft aviation engine resulted in less engine speed fluctuation and better control effect, which has good application value.