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In order to meet the requirements of mid-infrared gas detection, a high-precision DSP lock-in amplifier is designed with MATLAB/Simulink and DSP. By using Target for TI C2000 toolbox which integrates Simulink with TMS320F2812, the automatic generation of C code can be achieved and the programming time can be saved enormously. An AD correction module is added in this paper to ensure sampling accuracy...
A high-precision self-adaptive proportion integral derivative (PID )control system for semiconductor laser is introduced. Output wavelength of the semiconductor laser can be drifted with the temperature changing. It affects the wavelength accuracy and the characteristics of semiconductor laser. In order to enable the semiconductor laser works steadily and maintain its temperature stability, this system...
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