本文实现二级倒立摆数学模型的推导，状态空间描述以及状态反馈和状态观测器的实现！比较有无状态观测器对系统运动的影响！-This paper presents two mathematical models of the derivation of the inverted pendulum, the state-space representation, as well as state feedback and state observer to achieve! Comparison of availability of state observer on the system impact of the movement!