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| Application of fuzzy PID controller in temperature closed-loop control of paraffin heater in leaching workshop |
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| DOI： |
| KeyWord:fuzzy control PID PLC WINCC paraffin heater |
| FundProject: |
| Author Name | Affiliation | | YAN Maoli1, LI Xiao1, WANG Wei2, LIU Baoyou1, LI Qingzhuo3, LI Changjun1 | 1.Shandong Chemsta Machinery Manufacturing Co. ,Ltd. , Jining 272000, Shandong, China
2.Jining Machinery Design and Research Institute, Jining 272000, Shandong, China
3.Laser Research Institute of Shandong Academy of Sciences,Jining 272000,Shandong,China |
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| Abstract: |
| Paraffin heater is an important equipment of paraffin vent gas recovery process in leaching workshop. The temperature closed-loop system of paraffin heater is a typical nonlinear, time-varying and uncertain system, which is difficult to establish an accurate mathematical model. In order to improve the temperature closed-loop control effect of electric regulating valve of paraffin heater, taking the temperature deviation e and temperature deviation change rate ec of paraffin heater as inputs and KP, KI and KD of fuzzy PID controller as outputs, a two input three output fuzzy PID controller was constructed. Taking Siemens S7-300 PLC as the lower computer and WINCC configuration software as the upper computer, the algorithm program of fuzzy PID control was compiled with STEP 7 software, and the program was downloaded to S7-300 PLC memory card. S7-300 PLC was used to adjust the opening of electric regulating valve, so as to realize the temperature closed-loop control of paraffin heater. The fuzzy PID controller applied to the temperature closed-loop control system of paraffin heater in leaching workshop can reduce the overshoot of the system, and has the advantages of fast response speed and high stability, thus improving the operating efficiency of the temperature closed-loop control system of paraffin heater. |
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