Case Study Simulated
Autonomous Control of Non-Homogenous Pulverizer Coal Mill (2X2 Multivariable Interactive System)
edeX software can handle complicated designs including multi-input multi-output and multivariable interactive control systems. Below is a simulation of a for a pulverizer in a coal fired power generation station (a 2×2 system).
The pulverizer has large process dead times and it is considered a difficult loop to control due to the initial cooling of the burning chamber when demand is increased, or when there is a process disturbance.
The autotuner embedded in edeX makes it possible to design multivariable fuzzy controllers capable of eliminating the high interaction between the two loops, and to overcome the problem of large delays in the plant response.
To show the power and robustness of the fuzzy controller, we applied very large disturbances – equal to the set points. We applied these disturbances at the process output.
As can be see above, the fuzzy controller was able handle the disturbances remarkably well. Furthermore, it was able to reduce the interaction between the two loops to a minimum.
