Implementation of proportional–integral control in Baglog steamer temperature control

Sterilization is the oyster mushroom cultivation process. used to kill nuisance microorganisms that can inhibit growth. The sterilization process 8 hours at a temperature of 70–95 oC. This frequent breakdown caused by unstable space and controlled manually. Based on these problems, right solution use steamer be automatically using proportional–integral (PI) control method. PI controller consists proportional gain integral gain. To determine value gain, this study Ziegler-Nichols tuning method S curve. results parameters obtained Kp=25.2 Ki=0.302. Thus, producing transient response graph with Mp=94.5; Os=0.45; PO=0.47; Tr=16,440 s. system work according setpoint 95 oC maintain stable results. And time becomes fast from 6 hours.