The Research Of The Lubricating Oil Flow Control On The Sintering Machine

Sintering machine as the main equipment is used for sintering plant in sintering processes. sintering quality and working life of equipment are directly affected by Lubricating oil flow. Small flow does not reach set value to affect the quality of sintering. Big flow not only increases the bearing temperature, but cause the waste of resources. Lubricating oil flow must be limited to a reasonable and stable value.By analyzing the lubrication process of Sintering machine, based on mechanism analysis method, mathematical model between Lubricating oil flow and Electro-hydraulic proportional relief valve opening is established. In the analysis process, based on related research at home and abroad, secondary factors that relate to Lubricating oil flow are ignored. For flow control system in Lubricating is complex, and it is characterized by time delay, great inertia, etc. the requirement of flow control is hardly met by The traditional PID control algorithm. flow controller, based on internal model control (IMC), can well adapt to the process characteristics of Lubricating oil flow in process of Lubricating. The application of IMC algorithm in second-order inertia and pure lag system has been very mature. It has a lot of advantages, thus easily designed, small amount of online calculation, system error compensation of dynamic process, and rolling optimization that can improve the accuracy of the system. Based on the SIMULINK toolbox of MATLAB, IMC controller and PID controller is simulated respectively. Under the condition of disturbance and model mismatch, control system can quickly achieve a stable state with small amount of excess. The simulation result shows that predictive functional control has stronger adaptability and robustness for this control system.Structure of control system of lubricating oil flow is FCS, which includes monitoring layer, control layer and execution layer. Hardware system is consisted of PLC, several instrumentation and actuators, etc. With general KingView PC software, the monitor screen is designed, which can monitor the working condition of equipment and key parameters of system, thus flow. the safe operation of system is ensured by monitor.33charts and67references are supplied.