Papers by Keyword: LOGO!

Abstract: To effectively monitor the operation of feeding conveyer in automatic tomato selection assembly line and to avoid loss caused by machine’s breakdown, monitor control system was designed for the production line. The hardware circuit was designed using LOGO！ as the core control device, then the software was development. And two working modes (automatic start and manual start) were assembled in the system. Finally, the system was tested in the tomato automatic sorting assembly line. The results indicate that the system can start the machine quickly and respond immediately to break-down.

Abstract: The industrial manipulator has been introduced. The manipulator of cylindrical coordinate type provides with three degrees of freedom including rotation, lifting and expansion, which has corresponding rotation structure, lifting structure, expansion structure. All parts are drove and controlled by using hydraulic cylinder. FluidSIM-H is hydraulic simulation software and tightly integrated the CAD function and simulation function. To simulate and analyze the operation of hydraulic circuit which based on the physical model of hydraulic element and LOGO control. The results showed that the industrial manipulator can work reliably.

Abstract: Promoting and thrust gear on refrigerator body in automatic production line has been designed. The existed equipment has poor adaptability and low efficiency. The key improvement on promoting and thrust gear is to use hydraulic system as driving force. Movement of independent model car on the production line track has been circulated. Reasonable movement effect is achieved after analysis on hydraulic circuit simulation by FulidSIM-H. At last, the promoting and thrust gear is put to use in production line and got good performance.

Abstract: In order to solve the problem of constant-pressure water supply in high rise residential buildings, to fulfill the low power, low-cost demand, here I propose LOGO! And a water supply equipment controlled by frequency converter. By collecting field measurement signals through the pressure sensor together with LOGO! Logic control signals, this equipment can change the frequency and voltage of the inverter, control the pump's rotation rate and finally, meet the constant-pressure water supply demand. This paper also describes the hardware circuit and the software design of LOGO! in detail. Practice has proved that: The frequency converter and the LOGO! control are highly reliable, easily operated and conveniently maintained. Therefore the object of energy saving can be achieved successfully.