摘要
目前国内有关运输类飞机的研究较少,是由于运输类飞机体型较大,如需采用风洞,将大大提高设计成本,因此使得其空中功能实验基本处于停滞状态。为此,以运输机舱门电液控制系统分析为背景,采用Dryden紊流模型和(1-cosine)突风模型结合随机化模块来模拟实际大气流场,对空中飞行状况下的飞机舱门开门开锁电液控制系统的开启和保持过程进行仿真,并且引入一阶惯性环节对控制信号进行修正。在保证开门时间的要求下,修正措施消除了开锁时间过短引起的液压振荡,使得飞机舱门在保持阶段获得了更大的压差,提高了舱门开启和保持性能的可靠性。
By now, few researches of the transport aircraft have been carried out in our country. The main reason is because the transport aircraft has a big size which will raise the design cost in the wind tunnel. As a result, the development of the air-function experiment is at a standstill. In the background of the transport aircraft cabin door＇s electrohydraulic system, the Dryden wind field and the （1-cosine） discrete gust were used to build the stochastic wind field. Then, the open and keep-process of the carbon in the stochastic wind field could be observed. The analysis result shows that the system has a hydraulic vibration. A first-order process was used to modify the control signal. This change removes the hydraulic vibration which is caused by the shortness of the unlocking duration, and makes sure the gate opening is more reliable.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2014年第2期406-410,共5页
Journal of System Simulation
基金
西北工业大学基础科研基金(20100212)
技术基础(Z142010B001)
关键词
虚拟风场
飞机舱门
紊流
突风
液压振荡
virtual wind flow
cabin door
turbulent wind field
discrete gust
hydraulic vibration
