Aiming at the problems of high energy consumption and low operating efficiency of coal mine ventilation machinery equip-ment,a energy-saving control method for coal mine ventilation fans based on fuzzy PID was proposed.Based on the structure of coal mine ventilation fans,an online monitoring system was composed of wind speed,negative pressure,and carbon monoxide sensors to col-lect real-time environmental information inside the mine;according to the selection requirements of frequency converter,constant torque load frequency converter was selected to analyze the working process of frequency converter;establish the fuzzy PID control algorithm flow,generate the fuzzy rule table,and obtain the tuning formula of control parameters,which is the control result;according to the out-put value,the frequency of the frequency converter was controlled,and then the power of the fan was adjusted to achieve the self-adap-tive adjustment of the ventilation volume,so as to achieve the purpose of energy-saving ventilation.The experimental results show that the technology can meet the ventilation demand under the frequency conversion working condition,without too much or too little ventila-tion,ensuring the safety of mine operation and reducing the energy consumption of mechanical equipment.
frequency conversion working conditioncoal mine ventilation fanenergy-saving technologyfuzzy PID controlonline moni-toring system
维普
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