杜紫岩1,2,彭晔榕2,宋劼2,汪勇2,张海波2.基于需用功率预测的直升机/发动机综合控制方法[J].航空发动机,2022,48(5):143-148
基于需用功率预测的直升机/发动机综合控制方法
Helicopter / Engine Integrated Control Method Based on Required Power Prediction
  
DOI:
中文关键词:  涡轴发动机  直升机需用功率  线性补偿  综合控制  多元拟合
英文关键词:turboshaft engine  helicopter required power  linear compensation  integrated control  multivariate fitting
基金项目:航空动力基础研究项目资助
作者单位E-mail
杜紫岩1,2,彭晔榕2,宋劼2,汪勇2,张海波2 1.中国飞行试验研究院西安7100892.南京航空航天大学能源与动力学院南京210016 du_ziyan@163.com 
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中文摘要:
      为了提高涡轴发动机在直升机飞行状态突变时的响应速度,提出一种基于需用功率预测的直升机/发动机综合控制方 法。通过逐步回归分析法对直升机需用功率影响最大的5个变量进行选取,并以这5个变量为输入量,根据多元拟合方法建立直 升机需用功率预测模型,基于所建立的预测模型,采用预测需用功率信号在发动机控制回路的燃气涡轮转速指令位置进行前馈线 性补偿,设计了直升机/发动机综合控制方法。经过UH-60A综合仿真平台验证,结果表明:所提出的综合控制方法相比于传统串 级PID控制方法,可以有效减少动力涡轮转速超调量或下垂量60%以上;相比加入总距前馈的控制方法,可以减小动力涡轮转速 超调量或下垂量20%以上;可以有效加快发动机响应速度,缩短发动机响应时间1 s以上,极大提高了发动机的稳定性及鲁棒性。
英文摘要:
      In order to improve the response speed of turboshaft engine when the helicopter flight state changes suddenly,a helicopter/ engine integrated control method based on required power prediction was proposed. The stepwise regression analysis method was used to se? lect the five variables that have the greatest impact on the helicopter power demand,based on multivariate fitting method,these five vari? ables were used as the input to establish the helicopter required power prediction model. Based on the prediction model,the predictive power demand signal was used for feedforward linear compensation at the gas turbine speed command position in the engine control loop, and the helicopter/engine integrated control method was designed. Verification results using the UH-60A integrated simulation platform showed that compared with the traditional cascade PID control method,the proposed integrated control method can effectively reduce the overshoot or droop of the power turbine speed by more than 60%,reduce the overshoot or droop of the power turbine speed by more than 20% compared with the control method of adding collective pitch feedforward; the engine response speed can be effectively accelerated, the engine response time shorten more than 1 s,and the stability and robustness of the engine greatly improved.
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