| Since 1940, Grease Abstraction Industry established, the foreigner industry has developed incessantly for nearly 70 years, and the foreign enterprise has got great progress in the produce yield and the throughout. The foreign grease companies use the automation control system and the high degree in automation. However, in our country, they have tried their best for many years and got some progress and development in the automation technology of Grease Abstraction. But because of being restricted by the fund and the enterprise scale, the whole extent of automation, compared with the foreigner's great and advanced grease produce company, shows its inferior position obviously. The thesis treat the DTDC temperature control system in grease industry as the research object,take PID controler system and Fuzzy-controler to control it. Main research results as follows:This thesis apply the PID controller to the DTDC temperature control, and use Matlab to simulate the DTDC temperature control progress, and get the simulate conclusion. Based on the simulate conclusion, the thesis analysis the shortage in the control system, and put forward the new control method: Fuzzy-PID control.This thesis apply the PID controller to the DTDC temperature control, and use Matlab to simulate the DTDC temperature control progress, and get the simulate conclusion. Based on the simulate conclusion, the thesis analysis the shortage in the control system, and put forward the new control method: Fuzzy-PID control.The thesis made the deep research to the fuzzy control theory. It include fuzzy parameter's quantity ,solve fuzzy ect. The thesis apply the fuzzy-PID controller to the DTDC temperature control system in grease industry. from simulating the control progress, the thesis get the simulating result. The paper compare the fuzzy-PID control result to the PID control result, and analysis the advantage and shortage to the two control mothed. The simulation experiment indicated that, this Fuzzy controller is strong in response speed ,push down the overtake adjust, and the effect is good.This thesis made deep research in fuzzy control theory and simulink in Matlab. During the study, we get abundant information and data, it. will made a good foundation for similar control system . |