3.1 引言 3.2 一阶系统的时域分析 3.3 二阶系统的时域分析

3.5 线形定常系统的稳定性 3.6 线性系统的稳态误差计算

3.3.1 二阶系统的数学模型 3.3.2 二阶系统的单位阶跃响应 3.3.3 二阶系统阶跃响应的性能指标

16.31 Feedback Control State-Space Systems What are state-space models? Why should we use them? and how do we develop a state-space mode( &ased in classical control design How are they related to the transfer functions What are the basic properties of a state-space model, and how do we analyze these?

Styles of kinematic GPS Kinematic GPS techniques go by a number of names with features that are often receiver specific Kinematic GPS: Early term which implies that there is no loss of lock while the receiver is moving. In survey mode, if loss of ock occurs the antenna must be returned to a point of know ocation

6.1 喷气推力姿态稳定原理 6.2 喷气姿态稳定系统的非线性控制律 6.3 航天器的喷气推力器系统 6.4 飞轮姿态稳定原理 6.5 零动量反作用轮三轴姿态稳定系统 6.6 偏置动置轮三轴姿态稳定系统 6.7 控制力矩陀螺三轴姿态稳定系统

Mathematical models in GPS Review assignment dates (updated on class web page) Paper draft due Mon April 29 Homework 3 due Fri May 03 -Final class is Wed May 15. Oral presentations o papers. Each presentation should be 15-20 minutes, with additional time for questions. · Next three lectures:

Rank deficiencies Ranks deficiencies are combinations of parameters that can not be separately estimated In GPs. there are several rank deficiencies UTl, Longitudes of all the stations and the nodes of the satellite orbits, effectively can not be separated In theory, orbit perturbations by the moon/sun on the GPs

Model Uncertain Prior analysis assumed a perfect model. What if the model is in correct= actual system dynamics GA(s)are in one of the sets Multiplicative model G,(s=GN(s(1+E(s)) Additive model Gp(S)=GN(S)+E(s) where

Goal: Design a controller K(s so that the system has some desired characteristics. Typical objectives Stabilize the system( Stabilization) Regulate the system about some design point(Regulation Follow a given class of command signals(Tracking) Reduce the response to disturbances(Disturbance Rejection Typically think of closed-loop control > so we would analyze the