Suction appts for loading-unloading of bulk material in large scale transportation or for domestic and industrial vacuum cleaner - uses fuzzy-logic control and has dust sensor deflecting loading of air with particles and producing signal proportional to loading

摘要

The suction appts includes a pressure sensor (D) which generates a first signal in dependence on a generated actual suction pressure in the flow direction before the suction draught. A dirt sensor(d) produces a second signal for forming a desired suction pressure to be generated from the suction draught in dependence on particle quantities present. A controller (R) for controlling the suction pressure is supplied with the difference between the actual and desired suction pressure. The controller uses these values to derive an adjustment magnitude to influence the suction draught power. ADVANTAGE - Suction pressure can be increased in response to contamination quantities.