NOVELTY - Automatically controlled sludge aerobic fermentation experiment simulation system comprises a fermentation tank part comprising a fermentation tank, a frequency conversion air blower and a flow meter, and a monitoring part comprising a monitoring computer, programmable logic controller (PLC) control plate, a frequency converter, a temperature sensor, oxygen, ammonia and hydrogen sulfide probe. The flow meter is used for measuring gas flow rate of air blower. The outlet end of the frequency conversion air blower is connected to the bottom end of the fermentation tank.    USE - Used as an automatically controlled sludge aerobic fermentation experiment simulation system.    ADVANTAGE - The system: can automatically control the fermentation process according to the fermentation tank temperature, oxygen, ammonia and hydrogen sulfide conditions based on feedback control frequency operation and exhaust fan operations; ensures precise temperature control; and enables oxygen supply and odorous tail gas collection control.    DETAILED DESCRIPTION - Automatically controlled sludge aerobic fermentation experiment simulation system comprises a fermentation tank part and a monitoring part. The fermentation tank part comprises a fermentation tank, a frequency conversion air blower and a flow meter. The flow meter is used for measuring gas flow rate of air blower. The outlet end of the frequency conversion air blower is connected to the bottom end of the fermentation tank. The monitoring part comprises a monitoring computer, programmable logic controller (PLC) control plate, a frequency converter, a temperature sensor, oxygen, ammonia and hydrogen sulfide probe, environment temperature humidity probe, an environmental ammonia and hydrogen sulfide probe. The monitoring computer is connected to the PLC control plate. The PLC control plate is respectively connected to a variable frequency blower and induced draft fan via a controlling mechanism. The fermentation tank is set with an air inlet and an air outlet. The PLC control plate is further connected to temperature sensor, oxygen, ammonia and hydrogen sulfide probe. The monitoring computer can record the aeration volume, temperature, oxygen, ammonia and hydrogen sulfide in the fermentation tank, and simultaneously record air blower, a draught fan, an exhaust fan, oxygen, ammonia and hydrogen sulfide probe operation and failure conditions in real time to achieve manual or automatic control of air blower, draught fan, exhaust fan, oxygen, ammonia and hydrogen sulfide probe.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of automatically controlled sludge aerobic fermentation experiment simulation system.