摘要
从舵回路非线性特性的研究入手,通过频谱分析和实验验证,揭示了高增益电传系统中三角波的高频奇次谐波激发舵面抖振的物理本质,并给出电传系统谐波振荡的必要条件、抖振的频率特征以及防排措施,对现代飞行控制系统的设计具有重要参考作用。
Taking the research of nonlinear characteristics of the actuator loop as the point of departure, through the spectrum analysis and the experimental verification, the physical essence of control surface buffet excited by the high-treguency odd harmonic of the triangular wave in a high-gain fly -by-wire system has been discovered.The necessary condition of harmonic oscillation, as well as the frequency characteristics and the overcoming measures of the buffet in FBW system are also presented. These are important references for the designing of modern flight control systems.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1993年第2期B066-B071,共6页
Acta Aeronautica et Astronautica Sinica
关键词
电传系统
三角波
奇次谐波
抖振
fly-by-wire system, triangular wave, oddorder harmonic, buffet
