状态空间控制，含直接法和艾尔曼公式法状态反馈计算，以及simulink仿真。可自行设置四维状态空间矩阵，以及目标极点。-State space control, with direct and Elman formula method to calculate state feedback, and simulink simulation. You can set your own four-dimensional state space matrix, and target pole.