A Study On Mechatronics Of The Precise Metering Feeder Of Powder And Control System

The precise metering feeder of powder and control system has been already widely used in chemical industry, pharmacy, food business, and the military industry, etc for a long time. People usually use it in a large quantity of powder, which unit of weight is kg or ton, but not in a small quantity of powder, which unit of weight is mg, and further relevant study and exploitation is seldom referred. So a study on mechatronics of the precise metering feeder of powder and control system is necessary in actually.In the text, the system is researched from three respects such as machinery, automatically controlled, accurate measurements, using a screw-sending device to send the powder through researching the classic screw-sending theory; discussing two method to control the step-motor; researching the communications between PLC and electronic scale.By these result, constitute the best controlled scheme, then apply the result studied to the actual design: It is include the design of every part of the screw-sending device and assembly of the whole, the choice about types of the controlled equipments, the input / output points collocating of...