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基于动力陀螺平台的制导关键技术研究
其他题名Research on Key Technology of Guiding Based on Dynamic Gyro
王恩德1,2
导师朱枫
关键词动力陀螺 便携式防空导弹 微弱信号处理 同步线性化
学位专业模式识别与智能系统
学位名称博士
2015-05-28
学位授予单位中国科学院沈阳自动化研究所
学位授予地点沈阳
作者部门光电信息技术研究室
摘要动力陀螺广泛应用在便携式防空导弹中,作为导弹的稳定跟踪平台具有结构精巧、价格低廉以及方便使用等优点。基于动力陀螺的制导关键技术研究包括目标位置信息处理、动力陀螺稳定控制平台以及导引信息处理等,本文结合实际应用中遇到的问题进行研究,主要内容包括: 1) 目标辐射经过大气传输以及导引头光学系统到达光电探测器靶面,形成电信号输出。常用的探测系统为调制盘式、多元式以及玫瑰扫描式,以多元式居多。由于探测器的原始输出非常微弱,不适合进行直接处理。本文针对这一问题,结合多元探测系统特点,以实际工程应用为背景,提出了一种基于频率分析的微弱信号处理方法,该方法较大程度的提高了微弱信号探测能力。 2) 稳定跟踪平台具有隔离导弹扰动、随动跟踪等功能,动力陀螺平台非常适合小口径的便携式防空导弹,该平台由俄罗斯引入我国,对该平台的分析和研究并不透彻,本文针对这一情况,分析了动力陀螺稳定跟踪平台的磁场、磁矩、力矩;研究了跟踪偏差以及跟踪收敛性问题;研究了动平衡调节方法并做了MAXWELL仿真。这些工作为动力陀螺的调试、控制和设计提供了重要的依据。 3) 导引信号由目标信息、初段修正信息以及末段修正信息组成。目标位置信号与目标视线角速度成正比关系,因此该信号可以用作比例导引法使用的导引信号;初段修正是防止导弹初段下沉的修正;末段超前修正是保证导弹攻击目标要害部位的修正,本文提出了基于时间差分的末段超前修正方法,这种方法简化了修正过程。 4) 单通道旋转弹只有一对可控的舵,在导弹旋转过程中,舵面产生的控制力可以用周期平均力实现对导弹俯仰、偏航耦合控制。为了实现比例导引,需要对导引信号进行线性化,该过程中引入的相位差会对周期平均力产生较大影响,鉴于此,在分析了该影响的基础上,提出了同步线性化方法,可以从根源上解决这一影响。 本文的研究成果既是对基于动力陀螺平台的制导信息处理理论的丰富与补充,又有实际的应用价值。
其他摘要Dynamic gyro is widely used as the stable and tracking platform in the man portable anti-aircraft missiles. The dynamic gyro has lots of advantages such as delicate in structure, low cost in manufacturing, convenient to use, etc. Key technology research of guidance information processing which is based on dynamic gyro is composed of target location processing, Stable and tracking platform and Guidance signal processing. This paper tries to study the problems in the practical application, the main contents as follows: 1) Target radiation which goes through the atmosphere, the optical system of seeker reaches the surface of the photo detector will generate the original electrical signal. Usually, there are three types of the detecting system: modulation panel type, rosette scanning type and multi element type which is the most widely used among these types. As the original output detector which is quite weak is not suitable for direct processing. In order to solve this problem, considering the characteristics of multiple element detecting system and the engineering application, this paper provides a weak signal processing method based on frequency analysis, and the method could improve the ability of weak signal detection. 2) Isolating the disturbance of the missile and following-up the target are the two main functions of the stable and tracking platform. The dynamic gyro platform is quite suitable for man portable anti-aircraft missiles. The platform is introduced to China from Russia, and it is not completed mastered. According to this situation, this paper analyses the magnetic field, magnetic moment and moment of dynamic gyro; Studies the tracking deviation and tracking convergence problem; Studies the regulation of dynamic balance method and establishes the simulation module by using MAXWELL software. These works provide the basis for debugging, controlling and designing the dynamic gyro. 3) Guiding signal is composed of target location signal, initial correcting signal and final correcting signal. Target location signal is in proportion with the target sight angular velocity, so this signal can be used as the guidance signal according to the principles of proportional guidance. The initial correcting signal is used to prevent the sinking of the missile. The final correcting signal is used to attacking the key parts of the target. This paper provides a simplified final correcting method based on the time difference theory. 4) Single channel rotating missile has only a pair of controlled rudder, the control force which can be described by the periodical mean force in a spin period controls the pitch and yaw channels of missile. In order to realize proportional guidance, the control signal should be linearized. During the linearized procedure, the phase difference will generate great effect on the periodical mean force, in view of this, this paper provide a synchronous linearization method to solve the bad influence generated by the phase difference. The achievements of this paper not only enriches and complements the theory of the guidance information processing which is based on dynamic gyro platform, but also has value in practical application.
语种中文
产权排序1
文献类型学位论文
条目标识符http://ir.sia.cn/handle/173321/16772
专题光电信息技术研究室
作者单位1.中国科学院沈阳自动化研究所
2.中国科学院大学
推荐引用方式
GB/T 7714
王恩德. 基于动力陀螺平台的制导关键技术研究[D]. 沈阳. 中国科学院沈阳自动化研究所,2015.
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