刘露杨1 ,郭迎清 1 ,杨闻浩 1 ,刘严严 2.基于H ∞ 回路成形的变循环发动机多变量控制[J].航空发动机,2023,49(1):139-144
基于H ∞ 回路成形的变循环发动机多变量控制
Multivariable Control of Variable Cycle Engine Based on H ∞ -Infinity Loop Shaping
  
DOI:
中文关键词:  变循环发动机  多变量控制  H ∞ 回路成形法  相对增益矩阵
英文关键词:variable cycle engine  multivariable control  H ∞ -infinity loop shaping method  relative gain matrix
基金项目:国家科技重大专项(J2019V-0003)资助
作者单位E-mail
刘露杨1 ,郭迎清 1 ,杨闻浩 1 ,刘严严 2 1.西北工业大学 动力与能源学院西安 7101292.中国航发沈阳发动机研究所沈阳110015 mliuluyang@mail.nwpu.edu.cn 
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中文摘要:
      为了进一步提升变循环发动机的性能,针对3输入3输出变循环发动机模型,利用相对增益矩阵(RGA)分析了发动机内 部的耦合性;采用基于目标函数的2自由度H ∞ 回路成形法设计了多变量控制器,并与传统单变量PI方法做了对比。仿真结果表 明:多变量控制系统具有良好的扰动抑制能力和跟踪性能,且能够顺利实现模态转换;与单变量方法相比,在同等的穿越频率及相 位裕度约束下,n 1 回路阶跃响应的超调量减小了95.3%、调节时间缩短了51.5%;πe回路的最大偏移量减小了89.69%、调节时间缩 短了27.4%。表明多变量方法可以对变循环发动机进行有效控制且在跟踪控制过程中的性能更优,可以显著提升变循环发动机 的性能。
英文摘要:
      In order to further improve the performance of the variable cycle engine, the relative gain matrix (RGA) was used to analyze the internal coupling of the 3-input 3-output variable cycle engine model. The multivariable controller was designed by using the two-de? grees-of-freedom H ∞ -infinity loop shaping method based on the objective function and compared with the traditional single variable PI method. The simulation results show that the multivariable control system has good disturbance rejection ability and tracking performance, and can successfully realize modal transition. Compared with the single variable method, under the same crossover frequency and phase margin constraints, the overshoot of the n 1 loop step response is reduced by 95.3% and the settling time is shortened by 51.5%. The maxi? mum offset of π e loop is reduced by 89.69% and the settling time is shortened by 27.4%. It shows that the multivariable method can effec? tively control the variable cycle engine and performs better in the tracking control process, which can significantly improve the performance of the variable cycle engine.
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