Analysis about the Hongxing Calcining Rotary Kiln

The flexible driving with multichannel engaging has a variety of forms. According to the features of the calcining rotary kiln, we can use the dolly flexible driving with multichannel engaging when we transform the driving device. The temperature intelligent monitoring system of the rotary kiln is the core technical aspect in the new generation of dry cement production process. Since the rotary kiln has the features of nonlinearity, multi variables, strong coupling, the kiln situation of the rotary kiln is ery complex. The control is also extremely difficult. If the temperature is too low which leads to the inadequately combustion of the fuels, the energy waste and environmental pollution will be caused. If the temperature is too high, it will make the production of raw materials calcined excessively, which will also affect the quality of the products.
IPC, PLC and Porfibus-DP fieldbus solutions are used in the overall design of the monitoring system. The system can be divided into three layers, namely the live execution layer, a layer of intermediate control, the layer of system monitoring. In the system design, the kiln firing system is a difficulty of control as a multi-variable nonlinear coupled system. Through the analysis of its characteristics, the experts of Henan Hongxing Mining Machinery have put forward the production rules in accordance with the degree of autonomy, the principle of compensation combining with the artificial experiences as well as the advantages of the PID control algorithm. In addition, we use the feedforward compensation in the loop for the major disturbance factors to compose the feedforward and feedback control system programs. The kiln belongs to the large delay and nonlinear time-varying object. FUZZY-PID control algorithm is used in the temperature control loop to design the parameters from the FUZZY-PID controller tuning and FUZZY optimization controller to achieve the optimization of the system control. The simulation results show the effectiveness of the control algorithm project.
The users of the rotary kiln should summarize the experience as much as possible and recognize the situation of the rotary kiln through the advanced intelligent control theory.
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