对单级倒立摆系统的平衡控制问题进行了研究.。首先建立了系统的数学模型 ,然后采用 PID 方法设计控制器 ,最后对控制系统进行了仿真实验研究. 仿真实验结果不仅证明了PID方案对系统平衡控制的有效性，同时也展示了它们的控制品质和特性.。-The balance control of a single inverted pendulum system was focused. First , the mathematical model of the system was built , then the PID method was adopted respectively to design the controllers, at last , the simulation experiments were finished, by the simulation experiment results, not only the validity of the three methods were confirmed , but their qualities and characteristics were shown fully also.