The dual sensor closed-loop control method is designed for the flat panel control system on free pendulum. With this method, the angle of the free pendulum is detected firstly by adopting incremental photoelectric encoder, then with the free swing angle as the set-point, the real time rotating angle feedback of the flat panel is detected by the angle sensor to form closed-loop control. The test result shows that this method well accomplishes the detection function, and implements high precise control.%针对自由摆平板控制系统,设计了双传感器闭环控制方法.该方法首先采用增量式光电编码器检测自由摆角度；然后将自由摆角度值作为给定值,采用角度传感器检测平板的实时转角反馈,形成闭环控制.测试结果表明,该方法能够很好地完成检测功能,实现了高精度控制.
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