一种变输入参数结构的多控制器协调工作设计

Coordinative operation design for multiple controllers with variable input parameters

关键词:  航空、航天推进系统+  数值仿真  航空发动机  数字电子控制器+  多变量控制器+

Key words:  Aerospace propulsion system~+  Numerical simulation  Aeroengine  Digital electronic controller~+  Multi-variable controller~+

摘要:

针对稳态控制器接替加速控制器以及稳态控制器之间相互接替工作的问题,提出了以输出反馈修正稳态控制器输入偏差的控制器小闭环结构方案解决第一个问题,考虑到多控制器接替工作的工程简单化,提出了一种以匹配通道增益为基础的变参数控制器结构的将输出选择变为输入偏差选择的鲁棒控制器的设计方法解决第二个问题。在所提出的两种简化的控制系统结构方案上,采用H∞设计的控制器进行了多控制器接替工作的仿真。仿真结果表明,这种方法能够在航空发动机控制系统中解决多控制器协调工作的工程实际应用问题。

Abstract:

This paper discusses the problems of coordinative operation between the steady state controllers and accelerating controller,and among the steady state controllers themselves.For the first problem,one control scheme of inner closed loop structure is proposed which modifies the input error of steady state controllers using measurement feedback.For the second one,considering the engineering simplification,a variable input parameter robust controller based on matching the channel gains is proposed,which changes the output choice into input error choice.Finally,the simulation is conducted for these two simplified schemes using controllers obtained from H_∞ design controllers,which shows that the proposed methods can address the engineering application problem of multiple controllers coordinative operation arising from the aeroengine control systems.