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Design of closed-loop feedback high-resolution voltage controller for IR detector bias
Author(s): 
Pages: 991-995
Year: Issue:  9
Journal: Laser & Infrared

Abstract: 偏置电压对于非制冷红外成像系统起着关键作用,新一代红外焦平面阵列读出电路结构要求精度更高、可调范围更大、更加稳定的偏置电压.从电压的产生原理入手,设计了单片机控制数字电位器、运算放大器产生偏压及引入ADC器件TLV2544的闭环反馈自动控制系统结构,结合开发的电脑界面控制窗口更加方便控制偏压的输出.通过实际测试,该系统4个偏压输出范围0~5.5 V,精度达到0.001 V,具有高精度、高稳定性、调...
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