Gpredict is a real-time satellite tracking and orbit prediction application. It can track an unlimited number of satellites and display their position and other data in lists, tables, maps, and polar plots (radar view). Gpredict can also predict the

要求：a、试确定一个状态反馈阵K，使相对于单位阶跃参考输入的输出过渡过程，满足如下的期望指标：超调量σ< 20 ,峰值时间t_p< 0.4s。 b、如果系统的状态变量在实际上无法测量，试确定一个状态观测器（全维），使得通过基于状态观测器的状态反馈，满足上述期望的性能指标。 -Requirements: a, a test to determine the state feedback matrix K, for the output of the phase transiti