Research on Improved PID Temperature Control Method for Thin Film Hydro-gen Sensor
Research on the improved PID temperature control method for thin film hydrogen sensors to meet the de-mand for high-precision measurement of hydrogen in aerospace,aviation,shipbuilding and other fields,this paper pro-poses an improved digital PID temperature control method to address the issue of resistance thin film hydrogen sen-sors being susceptible to temperature fluctuations.This method shortens the time for the sensor temperature to enter steady state,reduces overshoot amplitude,and improves temperature control accuracy.The experimental results show that the adjustment time of the hydrogen sensor using the traditional PID algorithm is 68 s,and the temperature control accuracy is±0.25℃.The improved PID algorithm reduces the adjustment time to 35 s,and the temperature control accuracy is±0.1℃.This shortens the response time of the hydrogen sensor,improves the signal-to-noise ratio,and has engineering application value.
PIDPWMaccommodation timetemperature control accuracythin film hydrogen sensor
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