摘要
针对半捷联稳定平台中框架角速率的提取问题,首次提出了一种基于非线性跟踪微分器的测速方案,此方案可以避免常规差分测速带来的误差放大问题,并且可以利用预报补偿方法解决非线性跟踪微分器带来的相位延迟问题。数值仿真和实验结果表明,非线性跟踪微分器可以从框架角位置信号中准确地提取角速率信号,实验证明了基于非线性跟踪微分器的半捷联稳定方法与直接稳定方法对低频角扰动的隔离能力相当,并证明了非线性跟踪微分器在半捷联稳定平台中应用的可行性和有效性。
To solve the problem of frame angular velocity extracting in a semi-strapdown stabilized platform a velocity measurement scheme is proposed based on nonlinear tracking differentiator which can avoid the error amplification caused by conventional differential velocity measurement and can solve the problem of phase delay caused by nonlinear tracking differentiator by using a predictive compensation method.The digital simulation and experimental results show that the nonlinear tracking differentiator can accurately extract the angular velocity signals from the frame angular position signals.The experimental results show that the semi-strapdown stabilized method based on the nonlinear tracking differentiator can isolate the low-frequency angular disturbances as well as the direct stability method does which proves the feasibility and effectiveness of application of the nonlinear tracking differentiator in the semi-strapdown stabilized platform.
作者
史鹏杰
张红刚
高军科
SHI Pengjie;ZHANG Honggang;GAO Junke(Science and Technology on Electro-Optical Control Laboratory,Luoyang 471000 China;Luoyang Institute of Electro-Optical Equipment AVIC,Luoyang 471000 China)
出处
《电光与控制》
CSCD
北大核心
2020年第1期107-110,共4页
Electronics Optics & Control
关键词
非线性跟踪微分器
半捷联稳定平台
角速率估计
nonlinear tracking differentiator
semi-strapdown stabilized platform
angular rate estimation
