摘要
为了降低涡扇发动机控制逻辑中最小-最大选择结构的保守性,更高效地利用现有的安全裕度,提出一种基于条件判断准则的涡扇发动机限制保护控制器优化设计方法。通过对发动机关键输出变量进行条件主动判断,来决定限制保护控制器是否处于激活状态。其中,条件判断模块中的边界阈值采用智能优化算法-粒子群算法使其在给定的边界内搜索出合理可靠的最优值。基于某型涡扇发动机控制系统仿真平台进行计算机数值仿真,仿真结果表明:该优化方法有效地降低了最小-最大选择结构的保守性,在保持所有必要的安全极限情况下,推力响应速度得到了有效提高。其中,传统线性控制器的响应时间为4.7 s,而基于条件判断准则的限制保护控制器的响应时间则为3.8 s,缩短了近20%,控制系统的保守性得到了有效降低。
In order to reduce the conservatism of min-max selection structure in turbofan engine control logic and make more efficient use of the existing safety margin,an optimal design method of turbofan engine limit protection controller based on condition judgment criterion was proposed. The active condition judgment of the key output variables of the engine was carried out to determine whether the limit protection controller was in the active state. Among them,the boundary threshold in the condition judgment module adopted the intelligent optimization algorithm-particle swarm optimization algorithm to search the reasonable and reliable optimal value within the given boundary. Computer numerical simulation was carried out based on the simulation platform of a turbofan engine control system. The simulation results show that the optimization method effectively reduces the conservatism of the min-max selection structure,and the thrust response speed is effectively improved under the condition of maintaining all necessary safety limits. Among them,the response time of the traditional linear controller is 4.7 s,while the response time of the limit protection controller based on the condition judgment criterion is 3.8 s,which is shortened by nearly 20%,and the conservatism of the control system is effectively reduced.
作者
白杰
胡明亮
王伟
张德生
BAI Jie;HU Ming-liang;WANG Wei;ZHANG De-sheng(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Civil Aircraft Airworthiness and Maintenance Key Lab of Tianjin,Tianjin 300300,China;College of Mechanical Engineering,Chang’a n University,Xi’a n 710064,China)
出处
《航空发动机》
北大核心
2022年第2期109-113,共5页
Aeroengine
基金
大飞机重大专项资助。
关键词
限制保护控制器
线性控制器
涡扇发动机
保守性
条件判断准则
粒子群算法
limit protection controller
linear controller
turbofan engine
conservatism
conditional judgment criteria
particle swarm optimization algorithm
