|
In this paper, the existing batching control system widespread batching accuracy is not high , poor stability characteristics of the system , combined with a glass of Henan glass batch production line renovation project , the use of PLC-based control system to replace the original by the microcontroller , relays and weighing instruments , etc. constitute control system. New batching system consists of PLC, IPC with and weighing sensors and other components , in addition, the paper also glass batch system is running on the common faults carried out a detailed analysis to determine a glass batch system fault detection and diagnosis program . The text of the main contents include the following aspects : 1, describes the process of the glass batch system . Feeding method for the widely used two-speed the batching control deficiencies , the introduced fuzzy control algorithm, to the weighing deviation and the deviation of the rate of change at the same time as the controlled variable , as the three-digit number to the PLC output switching signal output, continuously adjustable electric vibrator through the feed speed , improve system batching accuracy. 3 , the process according to the ingredients designed the overall structure of the control system , the control system determines the relevant selection of the hardware , and also the control system of the main circuit is designed. 4, the modular design concept , the entire batching system software design , including PLC control software and PC management software. 5, to determine a glass batch system fault detection and diagnosis program , which adopts PLC Field fault detection ; utilize external PLC IPC -line detection equipment failure ; fault diagnosis expert system by calling the state of the fault analysis and judgment to determine the cause of the fault nature and location , and put forward the failure of maintenance , adjustment measures . . 6 , finally, after the completion of the renovation project on the glass batch production line for installation and commissioning, installation and commissioning given the experiences and lessons , puts forward the necessary precautions .
|