标题： 基于最优权重选择的混合LQG-LTR-LQI制导控制方案 显示英文标题

标题： Missile Attitude Control via a Hybrid LQG-LTR-LQI Control Scheme with Optimum Weight Selection

摘要： 本文提出了一种新的导弹姿态控制策略，该策略结合了线性二次高斯（LQG）、回路传递恢复（LTR）和线性二次积分（LQI）控制技术。 LQG控制设计分为两个步骤，即： 首先在噪声环境中应用卡尔曼滤波器进行状态估计，然后利用估计的状态通过线性二次调节器（LQR）进行最优状态反馈控制。 为了进一步提高导弹姿态控制系统的性能，分别应用LTR和LQI方案来增加稳定裕度并保证设定点跟踪性能，同时保持LQG的最优性。 使用Nelder-Mead单纯形优化技术对LQG的加权矩阵（Q）和加权因子（R）以及LTR的虚拟噪声系数（q）进行调整，以使闭环系统动作更快。 给出了仿真结果以说明所提出技术的有效性。 显示英文摘要

摘要： This paper proposes a new strategy for missile attitude control using a hybridization of Linear Quadratic Gaussian (LQG), Loop Transfer Recovery (LTR), and Linear Quadratic Integral (LQI) control techniques. The LQG control design is carried out in two steps i.e. firstly applying Kalman filter for state estimation in noisy environment and then using the estimated states for an optimal state feedback control via Linear Quadratic Regulator (LQR). As further steps of performance improvement of the missile attitude control system, the LTR and LQI schemes are applied to increase the stability margins and guarantee set-point tracking performance respectively, while also preserving the optimality of the LQG. The weighting matrix (Q) and weighting factor (R) of LQG and the LTR fictitious noise coefficient (q) are tuned using Nelder-Mead Simplex optimization technique to make the closed-loop system act faster. Simulations are given to illustrate the validity of the proposed technique.