ABSTRACT:On the basis of the production technology of the blast furnace, originally designed and put forward a brand-new cooling system, Utilize the fuzzy control theory to regulate three parameter Kps, Ki, Kd of PID controller online, And has designed the hardware of fuzzy PID controller and software part by oneself . System this regard 80C51 single computer as core, design have temperature of showing, accuse of warm automatically, report to the police and bring and guard the gate dog and power person who control function circuit only, Can go on from automatic to manual switching over.
Control algorithm parameter fuzzy to since exactly makes the method to adopt PID, learn from other' s strong points to offset one's weaknesses, annex the merit of the two, Perfect that PID control further Adaptive performance, it can give play to fuzzy controlling amount stupid and excellent and strong, the trends respond the well, time of rising fast, exceed the characteristic turned down, The trends with PID controller again follow the precision of quality and stable state .
Keywords: Cooling system, fuzzy PID, 80C51 single computer, temperature control