Research And Development Of Electronic Belt Automatic Batching System

With continuous development of science and technology, belt scale batching system has been widely used in various industries such as metallurgy, coal, chemical industry and building material. But most of batching and weighing systems still use normal PID control algorithm at present whose parameters are adjusted according to transition process time of step response and have high sensitivity. System of fixed parameters has good adjustment quality, can realize error-free adjustment theoretically and has its real advantage within the range of small error, but its dynamic feature isn't ideal and over-adjustment quantity is normally large when the error is large. At present, foreign and domestic electronic belt scale batching system can't solve this problem, so this task designs a reasonable and efficient electronic belt scale batching system. For batching section, the system uses fuzzy PID complex control technology and power control and configuration software technology based on PLC, realizes automatic batching process control of belt scale batching system and can effectively solve over-adjustment problem of system under the condition of large error. Main contents of the paper include overall structure design of the system, establishment of mathematic model, research on control algorithm and development of weighing management software.The paper firstly describes overall structure design plan of the system. The plan, from the view of technological process of system, suggests reasonable software and hardware configuration of system. This not only improves weighing accuracy and control accuracy of the system, but also greatly increases reliability of the system. It is convenient to realize them. The contents of relevant chapters include overall design plan and basic composition of the system, operation principle, control model and main technical parameters of the system, composition and principle of batching belt scale, selection of load cell and speed measurement transducer, selection of speed regulation of motor, anti-jamming design and grounding design of the system.Then the system describes the realization of fuzzy PID combine control system in detail and applies both fuzzy control technology and traditional PID adjustment technology to batching control. That is to say, experience on site...