火箭推进2025，Vol.51Issue(6)：120-131,12.DOI:10.3969/j.issn.1672-9374.2025.06.011
多电ATR发动机液氧/煤油电动泵交叉耦合复合控制方法
Cross-coupling composite control method for the LOX/kerosene electric pump in a multi-electric ATR engine system
摘要
Abstract
The combustion temperature of the gas generator in an air turbo rocket(ATR)engine is directly affected by the mixture ratio(the ratio of liquid oxygen to kerosene flow rates).Inaccurate mixture ratios can lead to overheating and pose significant safety risks.A composite control strategy for precise mixture ratio regulation is proposed,combining centrifugal pump pressure difference feedforward and flow feedback control in a single-flow path.A dual-path cross-coupling composite control strategy was further introduced to address mixture ratio deviations.The dynamic performance of the cross-coupling composite control was analyzed using a system model that integrates the engine controller and electric centrifugal pump.Results demonstrate that the gain coefficient k in cross-coupling control plays a critical role in determining control performance,requiring adjustment based on the specific system.In the control system,if the value of k is less than 1,the control performance is similar to that of the command control.However,if k exceeds 100,there is a risk of system instability.Compared to main command control,the cross-coupling composite control significantly enhances the flow dynamic response and the mixture ratio control accuracy.During dynamic adjustments,the mixture ratio overshoot is limited to 1％,and the error stabilizes within 0.01 s with an error no greater than 0.25％.The control performance is significantly superior to that of main command control.关键词
空气涡轮火箭发动机/流量控制/双流路/复合控制/交叉耦合控制Key words
air turbo rocket/flow control/dual-flow path/composite control/cross-coupling control分类
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赵宸锐,赵巍,马英群,杨学森,隋秀明,赵庆军..多电ATR发动机液氧/煤油电动泵交叉耦合复合控制方法[J].火箭推进,2025,51(6):120-131,12.基金项目
国家自然科学基金"叶企孙"联合基金(U2441278) （U2441278）
轻型涡轮动力全国重点实验室开放基金(2023-JJ-Y03). （2023-JJ-Y03）
