Gas Stove Distributed Control Systems Research And Application

Based on the study of gas generating process, this paper analyzes the influence of technological parameters to gasification efficiency and the main problems of gas-generator existed in ShaoGuan Smeltery.According to the expert system theory, a coordinator is proposed to determine optimal pressure of each gas-generator considering the general load and the status information of each gas-generator, which assures the balance of load distributing. A simple and convenient WAS algorithm is adopted to control gas pressure, which decreases the frequency of the valve's movement with appropriate precision.Saturation temperature affects gas output, gas quality and production process, also influences the lifetime of gas-generator. PID control is often adopted for industrial process control; however, the saturation temperature is affected by several factors, such as the steam pressure in drum and the gas-amount of blast. Fuzzy control is suitable to nonlinear and coupling situation. Thus, a Fuzzy controller is designed to control saturation temperature, and the running results show that fuzzy control is better than PID control for saturation temperature.Based on the system requirements, the general scheme and hardware configuration is designed, and a distributed control system for the gas generating process (GGDCS) is developed.With the real-time monitoring of gas generating process and suitable control algorithms, the running of GGDCS stabilizes key parameters, improves the gasification conditions, relieves operator's labor, and brings economy and social benefits to ShaoGuan Smeltery.