基于时间预测的升力风扇起动过程控制规律设计

Translated title of the contribution: Control law design of lift fan starting based on time prediction

Tianmu Jiang, Xiaobo Zhang, Zhanxue Wang, Yongquan Liu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

To reduce the shaft driven lift fan starting time,a general control law design method was proposed for the shaft driven lift fan propulsion system. A prediction model of the remaining starting time based on trend extrapolation and with a reference to the lift fan speed curve was established. Based on the time prediction model and control law pointwise optimization design method,the starting process control law was optimized point by point,and the starting process control law can be obtained by performing multiple rounds of optimization and using the optimization results of each round to update the reference speed curve. This method was used to design the control law of the starting process with the low-pressure rotor speed at the initial state of 50%. The starting time was only 3.1 s,which was 22.5% shorter than that of the pointwise optimization method, and the starting process strictly met the safe working limit. Furthermore,multiple groups of starting process control laws with the initial speed of 90% and between 50% and 90% were designed,illustrating that this method is not only suitable for starting at low speeds,but also effective at high speeds.

Translated title of the contributionControl law design of lift fan starting based on time prediction
Original languageChinese (Traditional)
Pages (from-to)2001-2014
Number of pages14
JournalHangkong Dongli Xuebao/Journal of Aerospace Power
Volume38
Issue number8
DOIs
StatePublished - Aug 2023

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