ID 原文 译文
7174 针对一款飞翼布局的尾坐式垂直起降飞行器,研究了悬停阶段的位置控制问题。 For a flying wing layout tail seated vertical take-off and landing aircraft, hovering stage position control problem is studied.
7175 小型飞行器质量、惯量小,具有纵向横向耦合严重、难以精确建模以及对扰动敏感等特点。 Small aircraft mass, inertia small, with longitudinal transverse coupling is serious, difficult to model accurately, and is sensitive to disturbance, etc.
7176 首先,建立包含不确定性的非线性动力学模型,通过整合将其改写为一个不含不确定的标称系统和一个非线性非匹配的不确定性两部分。 First, include uncertainty nonlinear dynamic model is set up, by integrating them into a nominal system contains no uncertainty and two parts of a nonlinear mismatched uncertainty.
7177 使用级联形式的非线性动态逆架构进行标称系统控制器的设计,显式的期望动力学表达使其更易与L1自适应控制器结合。 Using cascade nonlinear dynamic inversion structure in the form of nominal system controller design, the expectations of explicit dynamics expression to make it easier to combine with L1 adaptive controller.
7178 接着使用L1自适应控制器对非线性非匹配的不确定性进行补偿,以便提高系统鲁棒性,改善瞬态性能。 Then use the L1 adaptive controller to compensate nonlinear mismatched uncertainty, in order to improve the system robustness, improve the transient performance.
7179 为减小运算负荷,便于工程实现,使用计算更轻量的比例型自适应律进行L1自适应控制器设计。 To reduce the computation load and easy to project implementation, the use of calculation is more adaptive law is the proportion of lightweight type to L1 adaptive controller design.
7180 数值仿真验证了所设计控制器具有良好的位置和高度指令跟踪能力。 The design is verified by numerical simulation controller has a good location and high order tracking ability.
7181 针对实值混沌直接序列扩频(chaotic direct sequence spread spectrum,CD3S)信号同步难、解调难的问题,利用混沌码同步与信息码解调间的关联性,提出了一种基于双扩展卡尔曼滤波联合估计的CD3S信号解调算法。 In view of the real value chaotic direct sequence spread spectrum (chaotic direct sequence spread spectrum, CD3S) the problem of hard synchronization and demodulation signal, using chaos synchronization and information code demodulation, the correlation between extended kalman filtering is proposed based on a double CD3S signal demodulation algorithm of joint estimation.
7182 算法采用双扩展卡尔曼滤波结构,交替进行混沌码估计与信息码估计,通过联合估计完成混沌扩频码同步,并实现信息码的解调。 Extended kalman filtering algorithm with double structure, alternating with chaotic code estimation and information code, estimated to synchronize chaotic spread spectrum code through joint estimation, and implement information code of demodulation.
7183 考虑到信息码状态相互独立造成的卡尔曼增益退化问题,算法改进了信息码估计时的卡尔曼增益计算方法。 Given the state of information code independent kalman gain degradation problem, estimated by algorithm improved the information code of kalman gain calculation method.