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Information Technology Journal
Year: 2013  |  Volume: 12  |  Issue: 24  |  Page No.: 8583 - 8590

Study on a Method to Improve the Stability of the Sensor Signal Based on Pd Controller

Wei Chen, Houliang Qian, Hanqi Yu, Hu Feng and Gui Tong    

Abstract: In order to solve the high frequency oscillation generated from the video signal of the camera, the paper proposes a method to improve the stability of high frequency oscillation of common sensor signal which means the high frequency oscillation signal generated from the sensor module can increase the phase margin of the unstable signal through PD controller, thus produces a stable video signal and then through the circuit of AGC (Automatic Gain Control), the automatic compensation of the frequency can be achieved and finally the fourth-order low-pass circuit is used to meet the requirement of cutoff frequency of the sensor signal processing and the stability of the signal and the high frequency performance can be ultimately improved.

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